httk.atomistic.models.cell.record
=================================

.. py:module:: httk.atomistic.models.cell.record

.. autoapi-nested-parse::

   Backend for an exact stored cell record.



Classes
-------

.. autoapisummary::

   httk.atomistic.models.cell.record.RecordCell


Module Contents
---------------

.. py:class:: RecordCell(obj, **hints)

   Bases: :py:obj:`httk.atomistic.models.cell.backend.CellBackend`


   Backend for a cell stored in an exact record.

   :param obj: The stored cell record.
   :param \**hints: Backend-selection hints.


   .. py:property:: basis
      :type: httk.core.SurdVector


      Return the stored cell vectors.

      :return: The scaled lattice vectors.


   .. py:property:: scale
      :type: httk.core.SurdScalar


      Return the unit scale factor.

      :return: The factor applied to ``unscaled_basis``.


   .. py:property:: unscaled_basis
      :type: httk.core.SurdVector


      Return the stored basis before scaling.

      :return: The cell vectors.


   .. py:property:: precision
      :type: fractions.Fraction | None


      Return the stored basis precision.

      :return: The absolute precision, or ``None`` when unknown.


   .. py:method:: basis_floats()

      Return the scaled lattice vectors as float rows.

      :return: The store's fetched float columns, reshaped to 3x3, when available, else the exact basis as floats.



   .. py:property:: periodicity
      :type: tuple[bool, bool, bool]


      Return the stored periodicity flags.

      :return: Flags identifying the periodic basis rows.


   .. py:method:: unwrap()

      Return the stored cell record.

      :return: The source record.