Function Model

IO/IOSS/vtkIOSSModel.cxx:1104–1153

  }

  void Model(Ioss::Region& region) const override
  {
    auto* nodeBlock = region.get_node_block(this->Name);
    nodeBlock->put_field_data("ids", this->Ids);

    // add mesh coordinates
    using Dispatcher = vtkArrayDispatch::DispatchByArray<vtkArrayDispatch::AllPointArrays>;
    PutFieldWorker<double> worker(3, this->Ids.size(), false /* createAOS */);
    for (size_t dsIndex = 0; dsIndex < this->DataSets.size(); ++dsIndex)
    {
      auto& ds = this->DataSets[dsIndex];
      auto& lids = this->IdsRaw[dsIndex];
      worker.SetSourceIds(&lids);
      if (ds->GetPoints())
      {
        if (!Dispatcher::Execute(ds->GetPoints()->GetData(), worker))
        {
          vtkLog(ERROR, "Failed to dispatch points.");
        }
      }
    }

    // if displacement array is present, offset the mesh coordinates by the
    // provided displacement.
    const auto displMagnitude =
      this->DataSets.empty() ? 0.0 : this->Writer->GetDisplacementMagnitude();
    const std::string displName =
      displMagnitude > 0 ? vtkIOSSUtilities::GetDisplacementFieldName(this->DataSets.front()) : "";
    if (!displName.empty() && displMagnitude > 0.0)
    {
      DisplacementWorker<double> dworker(worker.SOAData, displMagnitude);
      for (size_t dsIndex = 0; dsIndex < this->DataSets.size(); ++dsIndex)
      {
        auto& ds = this->DataSets[dsIndex];
        auto& lids = this->IdsRaw[dsIndex];
        dworker.SetSourceIds(&lids);
        if (auto dispArray = ds->GetPointData()->GetArray(displName.c_str()))
        {
          if (!Dispatcher::Execute(dispArray, dworker))
          {
            vtkLog(ERROR, "Failed to dispatch displacements.");
          }
        }
      }
    }

    nodeBlock->put_field_data("mesh_model_coordinates_x", worker.SOAData[0]);
    nodeBlock->put_field_data("mesh_model_coordinates_y", worker.SOAData[1]);
    nodeBlock->put_field_data("mesh_model_coordinates_z", worker.SOAData[2]);
  }

  void Transient(Ioss::Region& region) const override
  {