# Copyright (C) 2017-2018 Garth N. Wells and Michal Habera
#
# This file is part of DOLFINx (https://www.fenicsproject.org)
#
# SPDX-License-Identifier: LGPL-3.0-or-later
"""Tools for assembling and manipulating finite element forms."""
from dolfinx.cpp.fem import (IntegralType,
create_nonmatching_meshes_interpolation_data, transpose_dofmap)
from dolfinx.cpp.fem import create_sparsity_pattern as _create_sparsity_pattern
from dolfinx.fem.assemble import (apply_lifting, assemble_matrix,
assemble_scalar, assemble_vector,
create_matrix, create_vector, set_bc)
from dolfinx.fem.bcs import (DirichletBC, bcs_by_block, dirichletbc,
locate_dofs_geometrical, locate_dofs_topological)
from dolfinx.fem.dofmap import DofMap
from dolfinx.fem.forms import Form, extract_function_spaces, form
from dolfinx.fem.function import (Constant, ElementMetaData, Expression,
Function, FunctionSpace, FunctionSpaceBase,
VectorFunctionSpace, functionspace)
[docs]def create_sparsity_pattern(a: Form):
"""Create a sparsity pattern from a bilinear form.
Args:
a: Bilinear form to build a sparsity pattern for.
Returns:
Sparsity pattern for the form ``a``.
Note:
The pattern is not finalised, i.e. the caller is responsible for
calling ``assemble`` on the sparsity pattern.
"""
return _create_sparsity_pattern(a._cpp_object)
__all__ = [
"Constant", "Expression", "Function", "ElementMetaData", "create_matrix",
"functionspace", "FunctionSpace", "FunctionSpaceBase", "VectorFunctionSpace",
"create_sparsity_pattern",
"assemble_scalar", "assemble_matrix", "assemble_vector", "apply_lifting", "set_bc",
"DirichletBC", "dirichletbc", "bcs_by_block", "DofMap", "Form",
"form", "IntegralType", "create_vector",
"locate_dofs_geometrical", "locate_dofs_topological",
"extract_function_spaces", "transpose_dofmap", "create_nonmatching_meshes_interpolation_data"]