Function AddFieldData

IO/CatalystConduit/vtkConduitToDataObject.cxx:1046–1114

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//----------------------------------------------------------------------------
bool AddFieldData(vtkDataObject* output, const conduit_cpp::Node& stateFields, bool isAMReX)
{
  auto field_data = output->GetFieldData();
  auto number_of_children = stateFields.number_of_children();
  for (conduit_index_t child_index = 0; child_index < number_of_children; ++child_index)
  {
    auto field_node = stateFields.child(child_index);
    const std::string& fieldName = field_node.name();

    try
    {
      std::size_t dataset_size = 0;
      if (field_node.number_of_children() == 0)
      {
        dataset_size = field_node.dtype().number_of_elements();
      }
      else
      {
        dataset_size = field_node.child(0).dtype().number_of_elements();
      }

      if (dataset_size > 0)
      {
        vtkSmartPointer<vtkAbstractArray> dataArray;
        if (field_node.dtype().is_string())
        {
          auto stringArray = vtkSmartPointer<vtkStringArray>::New();
          stringArray->SetNumberOfTuples(1);
          stringArray->SetValue(0, field_node.as_string().c_str());
          dataArray = stringArray;
          dataArray->SetName(fieldName.c_str());
        }
        else
        {
          dataArray = vtkConduitArrayUtilities::MCArrayToVTKArray(
            conduit_cpp::c_node(&field_node), fieldName);
        }

        if (dataArray)
        {
          if (isAMReX)
          {
            auto ug = vtkUniformGrid::SafeDownCast(output);
            const auto vtk_association = GetAssociation(field_node["association"].as_string());
            auto dsa = ug->GetAttributes(vtk_association);
            dsa->AddArray(dataArray);
          }
          else
          {
            field_data->AddArray(dataArray);
          }
        }

        if ((fieldName == "time" || fieldName == "TimeValue") && field_node.dtype().is_number())
        {
          // let's also set DATA_TIME_STEP.
          output->GetInformation()->Set(vtkDataObject::DATA_TIME_STEP(), field_node.to_float64());
        }