Method AllocateAndZeroFieldArrayMinMax

Filters/Parallel/vtkPKdTree.cxx:2472–2519

}

void vtkPKdTree::AllocateAndZeroFieldArrayMinMax()
{
  this->NumCellArrays = 0;
  this->NumPointArrays = 0;

  for (int set = 0; set < this->GetNumberOfDataSets(); set++)
  {
    this->NumCellArrays += this->GetDataSet(set)->GetCellData()->GetNumberOfArrays();
    this->NumPointArrays += this->GetDataSet(set)->GetPointData()->GetNumberOfArrays();
  }

  // Find maximum number of cell and point arrays. Set this number on all processes.
  // This handles the case where some processes have datasets with no cell or point
  // arrays, which may happen if a dataset on a process has no points or cells.
  if (this->NumProcesses > 1)
  {
    int tmpNumArrays[2], maxNumArrays[2];
    tmpNumArrays[0] = this->NumCellArrays;
    tmpNumArrays[1] = this->NumPointArrays;
    this->Controller->AllReduce(tmpNumArrays, maxNumArrays, 2, vtkCommunicator::MAX_OP);
    this->NumCellArrays = maxNumArrays[0];
    this->NumPointArrays = maxNumArrays[1];
  }

  this->FreeFieldArrayMinMax();

  if (this->NumCellArrays > 0)
  {
    std::fill(this->CellDataMin.begin(), this->CellDataMin.end(), 0);
    this->CellDataMin.resize(this->NumCellArrays, 0);
    std::fill(this->CellDataMax.begin(), this->CellDataMax.end(), 0);
    this->CellDataMax.resize(this->NumCellArrays, 0);

    std::fill(this->CellDataName.begin(), this->CellDataName.end(), std::string());
    this->CellDataName.resize(this->NumCellArrays, std::string());
  }

  if (this->NumPointArrays > 0)
  {
    std::fill(this->PointDataMin.begin(), this->PointDataMin.end(), 0);
    this->PointDataMin.resize(this->NumPointArrays, 0);
    std::fill(this->PointDataMax.begin(), this->PointDataMax.end(), 0);
    this->PointDataMax.resize(this->NumPointArrays, 0);

    std::fill(this->PointDataName.begin(), this->PointDataName.end(), std::string());
    this->PointDataName.resize(this->NumPointArrays);
  }
}
void vtkPKdTree::FreeFieldArrayMinMax()
{
  this->CellDataMin.clear();