/usr/lib/python2.7/dist-packages/FIAT/P0.py is in python-fiat 2016.2.0-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | # Copyright (C) 2005 The University of Chicago
#
# This file is part of FIAT.
#
# FIAT is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# FIAT 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with FIAT. If not, see <http://www.gnu.org/licenses/>.
#
# Written by Robert C. Kirby
# Modified by Andrew T. T. McRae (Imperial College London)
#
# This work is partially supported by the US Department of Energy
# under award number DE-FG02-04ER25650
from __future__ import absolute_import, print_function, division
from FIAT import dual_set, functional, polynomial_set, finite_element
import numpy
class P0Dual(dual_set.DualSet):
def __init__(self, ref_el):
entity_ids = {}
nodes = []
vs = numpy.array(ref_el.get_vertices())
bary = tuple(numpy.average(vs, 0))
nodes = [functional.PointEvaluation(ref_el, bary)]
entity_ids = {}
sd = ref_el.get_spatial_dimension()
top = ref_el.get_topology()
for dim in sorted(top):
entity_ids[dim] = {}
for entity in sorted(top[dim]):
entity_ids[dim][entity] = []
entity_ids[sd] = {0: [0]}
super(P0Dual, self).__init__(nodes, ref_el, entity_ids)
class P0(finite_element.CiarletElement):
def __init__(self, ref_el):
poly_set = polynomial_set.ONPolynomialSet(ref_el, 0)
dual = P0Dual(ref_el)
degree = 0
formdegree = ref_el.get_spatial_dimension() # n-form
super(P0, self).__init__(poly_set, dual, degree, formdegree)
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