# This program 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.
#
# This program 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 this program. If not, see .
#
# Copyright(C) 2013-2018 Max-Planck-Society
#
# NIFTy is being developed at the Max-Planck-Institut fuer Astrophysik
# and financially supported by the Studienstiftung des deutschen Volkes.
from ..domains.unstructured_domain import UnstructuredDomain
from ..domain_tuple import DomainTuple
from .linear_operator import LinearOperator
class GeometryRemover(LinearOperator):
"""Operator which transforms between a structured and an unstructured
domain.
Parameters
----------
domain: Domain, tuple of Domain, or DomainTuple:
the full input domain of the operator.
Notes
-----
The operator will convert every sub-domain of its input domain to an
UnstructuredDomain with the same shape. No weighting by volume factors
is carried out.
"""
def __init__(self, domain):
super(GeometryRemover, self).__init__()
self._domain = DomainTuple.make(domain)
target_list = [UnstructuredDomain(dom.shape) for dom in self._domain]
self._target = DomainTuple.make(target_list)
@property
def domain(self):
return self._domain
@property
def target(self):
return self._target
@property
def capability(self):
return self.TIMES | self.ADJOINT_TIMES
def apply(self, x, mode):
self._check_input(x, mode)
if mode == self.TIMES:
return x.cast_domain(self._target)
return x.cast_domain(self._domain)