"""
_______ _______ ___ __ __ _______ _______
| || || | | | | || || |
| ___|| ___|| | | | | || _ || ___|
| |___ | |___ | | | |_| || |_| || |___
| ___|| ___|| |___ | || ___|| ___|
| | | |___ | || || | | |___
|___| |_______||_______||_______||___| |_______|
This file is part of felupe.
Felupe is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Felupe is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Felupe. If not, see <http://www.gnu.org/licenses/>.
"""
from ._base import Field
from ._axi import FieldAxisymmetric
from ._planestrain import FieldPlaneStrain
from ._container import FieldContainer
from ..region._templates import (
RegionQuad,
RegionHexahedron,
RegionConstantQuad,
RegionConstantHexahedron,
RegionQuadraticHexahedron,
RegionTriQuadraticHexahedron,
RegionTriangle,
RegionTetra,
RegionQuadraticTriangle,
RegionQuadraticTetra,
RegionTriangleMINI,
RegionTetraMINI,
)
[docs]class FieldsMixed(FieldContainer):
r"""A mixed field based on a region and returns a :class:`FieldContainer`
instance."""
def __init__(
self,
region,
n=3,
values=(0, 0, 1, 0),
axisymmetric=False,
planestrain=False,
offset=0,
npoints=None,
):
r"""Create a mixed field based on a region. The dual region is chosen
automatically, i.e. for a :class:`RegionHexahedron` the dual region
is :class:`RegionConstantHexahedron`. A total number of ``n`` fields
are generated and passed to :class:`FieldContainer`.
Arguments
---------
region : Region
A template region.
n : int, optional (default is 2)
Number of fields where the first one is a vector field of mesh-
dimension and the following fields are scalar-fields.
values : tuple, optional (default is (0, 0, 1, 0))
Initial field values.
axisymmetric : bool, optional
Flag to initiate a axisymmetric Field (default is False).
planestrain : bool, optional
Flag to initiate a plane strain Field (default is False).
offset : int, optional
Offset for cell connectivity (default is 0).
npoints : int, optional
Specified number of mesh points (default is None).
"""
regions = {
RegionHexahedron: RegionConstantHexahedron,
RegionQuad: RegionConstantQuad,
RegionQuadraticHexahedron: RegionHexahedron,
RegionTriQuadraticHexahedron: RegionHexahedron,
RegionQuadraticTetra: RegionTetra,
RegionQuadraticTriangle: RegionTriangle,
RegionTetraMINI: RegionTetra,
RegionTriangleMINI: RegionTriangle,
}
kwargs = {}
if offset > 0:
kwargs["offset"] = offset
if npoints is not None:
kwargs["npoints"] = npoints
region_dual = regions[type(region)](region.mesh, **kwargs)
if axisymmetric is False and planestrain is False:
F = Field
elif axisymmetric is True and planestrain is False:
F = FieldAxisymmetric
elif axisymmetric is False and planestrain is True:
F = FieldPlaneStrain
fields = [F(region, dim=region.mesh.dim, values=values[0])]
for a in range(1, n):
fields.append(Field(region_dual, values=values[a]))
super().__init__(fields=tuple(fields))