:py:mod:`bempp.api.external.fenics`
===================================

.. py:module:: bempp.api.external.fenics

.. autoapi-nested-parse::

   Interface to DOLFIN for FEM-BEM coupling.



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

Classes
~~~~~~~

.. autoapisummary::

   bempp.api.external.fenics.FenicsOperator



Functions
~~~~~~~~~

.. autoapisummary::

   bempp.api.external.fenics.boundary_grid_from_fenics_mesh
   bempp.api.external.fenics.fenics_to_bempp_trace_data
   bempp.api.external.fenics.fenics_space_info
   bempp.api.external.fenics.p1_trace
   bempp.api.external.fenics.nc1_tangential_trace



.. py:function:: boundary_grid_from_fenics_mesh(fenics_mesh)

   Create a Bempp boundary grid from a FEniCS Mesh.

   Return the Bempp grid and a map from the node numberings of the FEniCS
   mesh to the node numbers of the boundary grid.


.. py:function:: fenics_to_bempp_trace_data(fenics_space)

   Return tuple (space,trace_matrix).


.. py:function:: fenics_space_info(fenics_space)

   Return tuple (family,degree) containing information about a FEniCS space.


.. py:class:: FenicsOperator(fenics_weak_form)


   Bases: :py:obj:`object`

   Wrap a FEniCS Operator into a Bempp operator.

   .. py:method:: weak_form()

      Return the weak form.



.. py:function:: p1_trace(fenics_space)

   Return the P1 trace operator.

   This function returns a pair (space, trace_matrix),
   where space is a Bempp space object and trace_matrix is the corresponding
   matrix that maps the coefficients of a FEniCS function to its boundary
   trace coefficients in the corresponding Bempp space.



.. py:function:: nc1_tangential_trace(fenics_space)

   Return the NC1 (twisted) tangential trace operator.

   This function returns a pair (space, trace_matrix),
   where space is a Bempp space object and trace_matrix is the corresponding
   matrix that maps the coefficients of a FEniCS function to its boundary
   trace coefficients in the corresponding Bempp space.