Method GetAttributeTypeForArray

Common/DataModel/vtkCellGrid.cxx:227–284

}

int vtkCellGrid::GetAttributeTypeForArray(vtkAbstractArray* arr)
{
  // First, see if the array is marked with a group for fast lookup.
  if (arr->HasInformation())
  {
    auto* info = arr->GetInformation();
    if (info->Has(ARRAY_GROUP_IDS()))
    {
      int numGroups = info->Length(vtkCellGrid::ARRAY_GROUP_IDS());
      int* groupIds = info->Get(vtkCellGrid::ARRAY_GROUP_IDS());
      for (int gg = 0; gg < numGroups; ++gg)
      {
        if (auto* group = this->FindAttributes(groupIds[gg]))
        {
          if (auto* array = group->GetAbstractArray(arr->GetName()))
          {
            if (array != arr)
            {
              // NB: We might update info by rewriting ARRAY_GROUP_IDS to
              //     exclude groupIds[gg], but it is possible – because
              //     arrays are shallow-copied – that they may end up in
              //     multiple groups across multiple instances of
              //     vtkCellGrid and we do not necessarily want to de-index
              //     arr across all cell-grids.
              continue;
            }
            return groupIds[gg];
          }
        }
      }
    }
  }

  // Next, search through DOF arrays:
  for (auto it = this->ArrayGroups.begin(); it != this->ArrayGroups.end(); ++it)
  {
    for (int ii = 0; ii < it->second->GetNumberOfArrays(); ++ii)
    {
      if (it->second->GetAbstractArray(ii) == arr)
      {
        // Accelerate next lookup by adding the result.
        arr->GetInformation()->Append(ARRAY_GROUP_IDS(), it->first);
        return it->first;
      }
    }
  }

  // If not a DOF array, perhaps it is field data:
  for (int ii = 0; ii < this->FieldData->GetNumberOfArrays(); ++ii)
  {
    if (this->FieldData->GetAbstractArray(ii) == arr)
    {
      return FIELD;
    }
  }
  // No such array is owned by this vtkCellGrid:
  return -1;
}