def convert_meshfunctions_to_submesh(mesh, submesh, meshfunctions_on_mesh):
assert meshfunctions_on_mesh is None or (isinstance(
meshfunctions_on_mesh, list) and len(meshfunctions_on_mesh) > 0)
if meshfunctions_on_mesh is None:
return None
meshfunctions_on_submesh = list()
# Create submesh subdomains
for mesh_subdomain in meshfunctions_on_mesh:
submesh_subdomain = MeshFunction("size_t", submesh,
mesh_subdomain.dim())
submesh_subdomain.set_all(0)
assert submesh_subdomain.dim() in (submesh.topology().dim(),
submesh.topology().dim() - 1)
if submesh_subdomain.dim() == submesh.topology().dim():
for submesh_cell in cells(submesh):
submesh_subdomain.array()[
submesh_cell.index()] = mesh_subdomain.array()[
submesh.submesh_to_mesh_cell_local_indices[
submesh_cell.index()]]
elif submesh_subdomain.dim() == submesh.topology().dim() - 1:
for submesh_facet in facets(submesh):
submesh_subdomain.array()[
submesh_facet.index()] = mesh_subdomain.array()[
submesh.submesh_to_mesh_facet_local_indices[
submesh_facet.index()]]
else: # impossible to arrive here anyway, thanks to the assert
raise TypeError(
"Invalid arguments in convert_meshfunctions_to_submesh.")
meshfunctions_on_submesh.append(submesh_subdomain)
return meshfunctions_on_submesh
def load_data(mesh, mesh_f, dim, data):
'''
Represent mesh_f over dim entities of mesh as collection of vertices.
Can have mesh as mesh function or (h5_file, data_set)
'''
try:
h5_file, data_set = mesh_f
mf = MeshFunction('size_t', mesh, dim, 0)
h5_file.read(mf, data_set)
except ValueError:
mf = mesh_f
data_set = '%d dim entites' % mf.dim()
# Mapf for encoding entities as vertices
mesh.init(dim, 0)
e2v = mesh.topology()(dim, 0)
tags = set(mf.array())
# Don't encode zero - we initialize to it
if 0 in tags: tags.remove(0)
info('%s evolves tags %r' % (data_set, tags))
for tag in tags:
data[(dim, tag)] = np.array([e2v(e.index()) for e in SubsetIterator(mf, tag)],
dtype='uintp')
return data
def convert(msh_file, h5_file, save_mvc=False):
'''Temporary version of convertin from msh to h5'''
root, _ = os.path.splitext(msh_file)
assert os.path.splitext(msh_file)[1] == '.msh'
assert os.path.splitext(h5_file)[1] == '.h5'
# Get the xml mesh
xml_file = '.'.join([root, 'xml'])
subprocess.call(['dolfin-convert %s %s' % (msh_file, xml_file)], shell=True)
# Success?
assert os.path.exists(xml_file)
mesh = Mesh(xml_file)
out = HDF5File(mesh.mpi_comm(), h5_file, 'w')
out.write(mesh, 'mesh')
print('Mesh has %d cells' % mesh.num_cells())
print('Mesh size %g %g' % (mesh.hmin(), mesh.hmax()))
# Save ALL data as facet_functions
names = ('surfaces', 'volumes')
if not save_mvc:
for name, region in zip(names, ('facet_region.xml', 'physical_region.xml')):
r_xml_file = '_'.join([root, region])
f = MeshFunction('size_t', mesh, r_xml_file)
print('%d %s with 1' % (sum(1 for _ in SubsetIterator(f, 1)), name))
out.write(f, name)
return True
for name, region in zip(names, ('facet_region.xml', 'physical_region.xml')):
r_xml_file = '_'.join([root, region])
f = MeshFunction('size_t', mesh, r_xml_file)
# With mesh value collection we only store nonzero tags
mvc = MeshValueCollection('size_t', mesh, f.dim())
# Fill
fill_mvc_from_mf(f, mvc)
# And save
out.write(mvc, name)
return True
def __init__(self,
mesh: df.Mesh,
time: df.Constant,
M_i: tp.Union[df.Expression, tp.Dict[int, df.Expression]],
M_e: tp.Union[df.Expression, tp.Dict[int, df.Expression]],
I_s: tp.Union[df.Expression, tp.Dict[int,
df.Expression]] = None,
I_a: tp.Union[df.Expression, tp.Dict[int,
df.Expression]] = None,
ect_current: tp.Dict[int, df.Expression] = None,
v_: df.Function = None,
cell_domains: df.MeshFunction = None,
facet_domains: df.MeshFunction = None,
dirichlet_bc: tp.List[tp.Tuple[df.Expression, int]] = None,
dirichlet_bc_v: tp.List[tp.Tuple[df.Expression, int]] = None,
periodic_domain: df.SubDomain = None,
parameters: df.Parameters = None) -> None:
"""Initialise solverand check all parametersare correct.
NB! The periodic domain has to be set in the cellsolver too.
"""
self._timestep = None
comm = df.MPI.comm_world
rank = df.MPI.rank(comm)
msg = "Expecting mesh to be a Mesh instance, not {}".format(mesh)
assert isinstance(mesh, df.Mesh), msg
msg = "Expecting time to be a Constant instance (or None)."
assert isinstance(time, df.Constant) or time is None, msg
msg = "Expecting parameters to be a Parameters instance (or None)"
assert isinstance(parameters, df.Parameters) or parameters is None, msg
self._nullspace_basis = None
# Store input
self._mesh = mesh
self._time = time
# Initialize and update parameters if given
self._parameters = self.default_parameters()
if parameters is not None:
self._parameters.update(parameters)
if self._parameters["Chi"] == -1 or self._parameters["Cm"] == -1:
raise ValueError(
"Need Chi and Cm to be specified explicitly throug the parameters."
)
# Set-up function spaces
k = self._parameters["polynomial_degree"]
Ve = df.FiniteElement("CG", self._mesh.ufl_cell(), k)
V = df.FunctionSpace(self._mesh,
"CG",
k,
constrained_domain=periodic_domain)
Ue = df.FiniteElement("CG", self._mesh.ufl_cell(), k)
if self._parameters["linear_solver_type"] == "direct":
Re = df.FiniteElement("R", self._mesh.ufl_cell(), 0)
_element = df.MixedElement((Ve, Ue, Re))
self.VUR = df.FunctionSpace(mesh,
_element,
constrained_domain=periodic_domain)
else:
_element = df.MixedElement((Ve, Ue))
self.VUR = df.FunctionSpace(mesh,
_element,
constrained_domain=periodic_domain)
self.V = V
if cell_domains is None:
cell_domains = df.MeshFunction("size_t", mesh,
self._mesh.geometry().dim())
cell_domains.set_all(0)
# Chech that it is indeed a cell function.
cell_dim = cell_domains.dim()
mesh_dim = self._mesh.geometry().dim()
msg = "Got {cell_dim}, expected {mesh_dim}.".format(cell_dim=cell_dim,
mesh_dim=mesh_dim)
assert cell_dim == mesh_dim, msg
self._cell_domains = cell_domains
if facet_domains is None:
facet_domains = df.MeshFunction("size_t", mesh,
self._mesh.geometry().dim() - 1)
facet_domains.set_all(0)
# Check that it is indeed a facet function.
facet_dim = facet_domains.dim()
msg = "Got {facet_dim}, expected {mesh_dim}.".format(
facet_dim=facet_dim, mesh_dim=mesh_dim - 1)
assert facet_dim == mesh_dim - 1, msg
self._facet_domains = facet_domains
# Gather all cell keys on all processes. Greatly simplifies things
cell_keys = set(self._cell_domains.array())
all_cell_keys = comm.allgather(cell_keys)
all_cell_keys = reduce(or_, all_cell_keys)
# If Mi is not dict, make dict
if not isinstance(M_i, dict):
M_i = {int(i): M_i for i in all_cell_keys}
else: # Check that the keys match the cell function
M_i_keys = set(M_i.keys())
msg = "Got {M_i_keys}, expected {cell_keys}.".format(
M_i_keys=M_i_keys, cell_keys=all_cell_keys)
assert M_i_keys == all_cell_keys, msg
# If Me is not dict, make dict
if not isinstance(M_e, dict):
M_e = {int(i): M_e for i in all_cell_keys}
else: # Check that the keys match the cell function
M_e_keys = set(M_e.keys())
msg = "Got {M_e_keys}, expected {cell_keys}.".format(
M_e_keys=M_e_keys, cell_keys=all_cell_keys)
assert M_e_keys == all_cell_keys, msg
self._M_i = M_i
self._M_e = M_e
# Store source terms
if I_s is not None and not isinstance(I_s, dict):
I_s = {key: I_s for key in all_cell_keys}
self._I_s = I_s
if I_a is not None and not isinstance(I_a, dict):
I_a = {key: I_a for key in all_cell_keys}
self._I_a = I_a
# Set the ECT current, Note, it myst depend on `time` to be updated
if ect_current is not None:
ect_tags = set(ect_current.keys())
facet_tags = set(self._facet_domains.array())
msg = "{} not in facet domains ({}).".format(ect_tags, facet_tags)
assert ect_tags <= facet_tags, msg
self._ect_current = ect_current
# Set-up solution fields:
if v_ is None:
self.merger = df.FunctionAssigner(V, self.VUR.sub(0))
self.v_ = df.Function(V, name="v_")
else:
# df.debug("Experimental: v_ shipped from elsewhere.")
self.merger = None
self.v_ = v_
self.vur = df.Function(self.VUR, name="vur")
# Set Dirichlet bcs for the transmembrane potential
self._bcs = []
if dirichlet_bc_v is not None:
for function, marker in dirichlet_bc_v:
self._bcs.append(
df.DirichletBC(self.VUR.sub(0), function,
self._facet_domains, marker))
# Set Dirichlet bcs for the extra cellular potential
if dirichlet_bc is not None:
for function, marker in dirichlet_bc:
self._bcs.append(
df.DirichletBC(self.VUR.sub(1), function,
self._facet_domains, marker))
def __init__(self,
mesh: df.Mesh,
time: df.Constant,
M_i: tp.Union[df.Expression, tp.Dict[int, df.Expression]],
I_s: tp.Union[df.Expression, tp.Dict[int,
df.Expression]] = None,
v_: df.Function = None,
cell_domains: df.MeshFunction = None,
facet_domains: df.MeshFunction = None,
parameters: df.Parameters = None):
# Store input
self._mesh = mesh
self._I_s = I_s
self._time = time
# Set-up function spaces
V = df.FunctionSpace(self._mesh, "CG", 1)
self.V = V
# Set-up solution fields:
if v_ is None:
self.v_ = df.Function(V, name="v_")
else:
self.v_ = v_
self.v = df.Function(self.V, name="v")
if cell_domains is None:
cell_domains = df.MeshFunction("size_t", mesh,
self._mesh.geometry().dim())
cell_domains.set_all(0)
# Chech that it is indeed a cell function.
cell_dim = cell_domains.dim()
mesh_dim = self._mesh.geometry().dim()
msg = "Got {}, expected {}.".format(cell_dim, mesh_dim)
assert cell_dim == mesh_dim, msg
self._cell_domains = cell_domains
if facet_domains is None:
facet_domains = df.MeshFunction("size_t", mesh,
self._mesh.geometry().dim() - 1)
facet_domains.set_all(0)
# Check that it is indeed a facet function.
facet_dim = facet_domains.dim()
msg = "Got {}, expected {}.".format(facet_dim, mesh_dim)
assert facet_dim == mesh_dim - 1, msg
self._facet_domains = facet_domains
if not isinstance(M_i, dict):
M_i = {int(i): M_i for i in set(self._cell_domains.array())}
else:
M_i_keys = set(M_i.keys())
cell_keys = set(self._cell_domains.array())
msg = "Got {}, expected {}.".format(M_i_keys, cell_keys)
assert M_i_keys == cell_keys, msg
self._M_i = M_i
# Initialize and update parameters if given
self.parameters = self.default_parameters()
if parameters is not None:
self.parameters.update(parameters)
