Method operator()

Common/DataModel/vtkCellArray.cxx:175–212

{
  template <class OffsetsT, class ConnectivityT>
  void operator()(OffsetsT* offsets, ConnectivityT* conn, bool& isValid) const
  {
    using ValueType = GetAPIType<OffsetsT>;

    // Both arrays must be single component
    if (offsets->GetNumberOfComponents() != 1 || conn->GetNumberOfComponents() != 1)
    {
      isValid = false;
      return;
    }

    auto offsetsRange = GetRange(offsets);

    // Offsets must have at least one value, and the first value must be zero
    if (offsetsRange.size() == 0 || *offsetsRange.cbegin() != 0)
    {
      isValid = false;
      return;
    }

    // Values in offsets must not decrease
    auto it = std::adjacent_find(offsetsRange.cbegin(), offsetsRange.cend(),
      [](const ValueType a, const ValueType b) -> bool { return a > b; });
    if (it != offsetsRange.cend())
    {
      isValid = false;
      return;
    }

    // The last value in offsets must be the size of the connectivity array.
    if (conn->GetNumberOfValues() != static_cast<vtkIdType>(*(offsetsRange.cend() - 1)))
    {
      isValid = false;
      return;
    }

    isValid = true;
  }
};

template <typename T>