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# SaveSceneToFieldData

### Description

Given a vtkDataSet, vtkActor and vtkCamera, save necessary variables in the vtkDataSet's vtkFieldData to recreate a scene to a file.

Note

The snippet currently just saves the vtkCamera variables.

To use the snippet, click the Copy to clipboard at the upper right of the code blocks.

### Declaration Section

    namespace
    {
    void SaveSceneToFieldData(vtkDataSet *data,
                              vtkActor *actor,
                              vtkCamera *camera);
    }

### Implementation Section

    #include <sstream>

    namespace
    {
    void SaveSceneToFieldData(vtkDataSet *data,
                              vtkActor *actor,
                              vtkCamera *camera)
    {
      std::ostringstream buffer;
      double vector[3];
      double scalar;

      camera->GetFocalPoint(vector);
      buffer << "Camera:FocalPoint "
             << vector[0] << ", "
             << vector[1] << ", "
             << vector[2] << std::endl;
      camera->GetPosition(vector);
      buffer << "Camera:Position "
               << vector[0] << ", "
               << vector[1] << ", "
               << vector[2] << std::endl;
      camera->GetViewUp(vector);
      buffer << "Camera:ViewUp "
               << vector[0] << ", "
               << vector[1] << ", "
               << vector[2] << std::endl;
      scalar = camera->GetViewAngle();
      buffer << "Camera:ViewAngle "
               << scalar << std::endl;
      camera->GetClippingRange(vector);
      buffer << "Camera:ClippingRange "
               << vector[0] << ", "
               << vector[1] << std::endl;
      vtkSmartPointer<vtkStringArray> cameraArray =
        vtkSmartPointer<vtkStringArray>::New();
      cameraArray->SetNumberOfValues(1);
      cameraArray->SetValue(0, buffer.str());
      cameraArray->SetName("Camera");
      data->GetFieldData()->AddArray(cameraArray);
    }
    } // namespace