httk.atomistic.models.cell.plain
================================

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

.. autoapi-nested-parse::

   Backend wrapping a raw 3x3 cell basis (the matrix of cell vectors).



Classes
-------

.. autoapisummary::

   httk.atomistic.models.cell.plain.PlainCell


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

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

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


   Backend for a cell backed by a raw 3x3 list or tuple of numbers (or any 3x3 vector-like).

   The native representation is preserved verbatim (one cell vector per row); the exact
   :class:`~httk.core.SurdVector` ``basis`` is built lazily and cached. This representation carries
   no separate length factor, so ``scale`` is the exact ``1`` and ``unscaled_basis == basis``.
   ``unwrap`` returns the original raw object.

   :param obj: The raw 3x3 basis representation.
   :param \**hints: Backend-selection hints.


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


      Return the raw basis in the canonical representation.

      :return: The cell 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 basis before scaling.

      :return: The cell vectors.


   .. py:method:: unwrap()

      Return the original basis object.

      :return: The raw basis representation.