Method WriteDataSet

IO/Export/vtkJSONSceneExporter.cxx:456–549

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

//------------------------------------------------------------------------------
std::string vtkJSONSceneExporter::WriteDataSet(
  vtkDataSet* dataset, const char* addOnMeta, const char* name)
{
  if (!dataset)
  {
    return "";
  }

  std::string dsPath = this->CurrentDataSetPath();
  ++this->DatasetCount;

  auto* polyData = vtkPolyData::SafeDownCast(dataset);
  vtkSmartPointer<vtkPolyData> newDataset;
  std::string polyLODsConfig;
  if (this->WritePolyLODs && polyData)
  {
    newDataset = this->WritePolyLODSeries(polyData, polyLODsConfig);
    // Write the smallest poly LOD to the vtkjs file
    dataset = newDataset.Get();
  }

  vtkNew<vtkJSONDataSetWriter> dsWriter;
  dsWriter->SetInputData(dataset);
  dsWriter->GetArchiver()->SetArchiveName(dsPath.c_str());

  // When the dataset is given a name, ie when we're working with a named actor map,
  // disable all arrays by default, and select only the ones that are mapped.
  if (name)
  {
    dsWriter->GetPointArraySelection()->SetUnknownArraySetting(0);
    dsWriter->GetCellArraySelection()->SetUnknownArraySetting(0);

    // Parse MapPointArrays's list of arrays, filter the ones that start with "propName:X", and
    // forward information about X to the writer
    for (int id = 0; id < this->PointArraySelection->GetNumberOfArrays(); id++)
    {
      std::string currentName = this->PointArraySelection->GetArrayName(id);
      if (currentName.find(name) != std::string::npos &&
        currentName[std::string(name).size()] == ':')
      {
        std::string arrayName = currentName.substr(std::string(name).size() + 1);
        dsWriter->GetPointArraySelection()->SetArraySetting(
          arrayName.c_str(), this->PointArraySelection->ArrayIsEnabled(currentName.c_str()));
      }
    }

    // Same for cell arrays
    for (int id = 0; id < this->CellArraySelection->GetNumberOfArrays(); id++)
    {
      std::string currentName = this->CellArraySelection->GetArrayName(id);
      if (currentName.find(name) != std::string::npos &&
        currentName[std::string(name).size()] == ':')
      {
        std::string arrayName = currentName.substr(std::string(name).size() + 1);
        dsWriter->GetCellArraySelection()->SetArraySetting(
          arrayName.c_str(), this->CellArraySelection->ArrayIsEnabled(currentName.c_str()));
      }
    }