Method Visit

Filters/ParallelStatistics/vtkGenerateStatistics.cxx:377–458

  vtkGenerateStatistics* Self{ nullptr };

  void Visit(int nodeId) override
  {
    std::string srcName = this->SourceAssembly->GetNodeName(nodeId);
    std::string tgtName = this->TargetAssembly->GetNodeName(nodeId);
    if (srcName != tgtName)
    {
      vtkErrorWithObjectMacro(this->TargetAssembly,
        "Mismatched nodes at " << nodeId << ": \"" << srcName << "\" vs \"" << tgtName << "\".");
      this->Error = true;
      return;
    }
    auto srcDataIndices =
      this->SourceAssembly->GetDataSetIndices(nodeId, /* traverse_subtree */ false);
    auto tgtDataIndices =
      this->TargetAssembly->GetDataSetIndices(nodeId, /* traverse_subtree */ false);
    vtkStatisticalModel* srcModel = nullptr;
    vtkStatisticalModel* tgtModel = nullptr;
    for (const auto& dataIndex : srcDataIndices)
    {
      auto* model =
        vtkStatisticalModel::SafeDownCast(this->SourceData->GetPartitionAsDataObject(dataIndex, 0));
      if (model)
      {
        srcModel = model;
        break;
      }
    }
    unsigned int tgtDataIndex = ~static_cast<unsigned int>(0);
    for (const auto& dataIndex : tgtDataIndices)
    {
      auto* model =
        vtkStatisticalModel::SafeDownCast(this->TargetData->GetPartitionAsDataObject(dataIndex, 0));
      if (model)
      {
        tgtDataIndex = dataIndex;
        tgtModel = model;
        break;
      }
    }
    if (tgtDataIndex == static_cast<unsigned int>(~0))
    {
      // If we have no data for the target node but do have data from the source node,
      // we need a place to copy the source model to. Append it to the end of TargetData:
      tgtDataIndex = this->TargetData->GetNumberOfPartitionedDataSets();
    }
    if (tgtModel && srcModel)
    {
      vtkNew<vtkStatisticalModel> temp;
      temp->DeepCopy(tgtModel);
#if VTK_DBG_ASSEMBLY
      auto sc = modelCardinality(srcModel);
      auto tc = modelCardinality(tgtModel);
#endif
      this->Collection->RemoveAllItems();
      this->Collection->AddItem(srcModel);
      this->Collection->AddItem(temp);
      if (!this->Algorithm->Aggregate(this->Collection, tgtModel))
      {