Function ExtractFieldMetaData

Filters/ParallelDIY2/vtkPResampleToImage.cxx:77–112

};

inline void ExtractFieldMetaData(vtkDataSetAttributes* data, std::vector<FieldMetaData>* metadata)
{
  if (data == nullptr || data->GetNumberOfTuples() == 0)
  {
    // do not consider arrays from empty vtkDataSetAttributes.
    // see paraview/paraview#18590
    metadata->clear();
    return;
  }

  if (auto maskArray = data->GetArray("vtkValidPointMask"))
  {
    // data may not be valid if the only array is vtkValidPointMask and it's set
    // to 0.
    if (data->GetNumberOfArrays() == 1 && maskArray->GetRange(0)[0] < 1.0 &&
      maskArray->GetRange(0)[1] < 1.0)
    {
      metadata->clear();
      return;
    }
  }

  std::size_t numFields = static_cast<std::size_t>(data->GetNumberOfArrays());
  metadata->resize(numFields);

  for (std::size_t i = 0; i < numFields; ++i)
  {
    FieldMetaData& md = (*metadata)[i];
    vtkDataArray* da = data->GetArray(static_cast<int>(i));

    md.Name = da->GetName();
    md.DataType = da->GetDataType();
    md.NumComponents = da->GetNumberOfComponents();
    md.AttributeType = data->IsArrayAnAttribute(static_cast<int>(i));
  }
}

inline void InitializeFieldData(
  const std::vector<FieldMetaData>& metadata, vtkIdType numTuples, vtkDataSetAttributes* data)