Commit 4a29e1ec authored by Philipp Arras's avatar Philipp Arras
Browse files

Add mask operator

parent cb66a789
......@@ -10,6 +10,7 @@ from .harmonic_transform_operator import HarmonicTransformOperator
from .inversion_enabler import InversionEnabler
from .laplace_operator import LaplaceOperator
from .linear_operator import LinearOperator
from .mask_operator import MaskOperator
from .multi_adaptor import MultiAdaptor
from .power_distributor import PowerDistributor
from .qht_operator import QHTOperator
......@@ -23,7 +24,7 @@ from .symmetrizing_operator import SymmetrizingOperator
__all__ = ["LinearOperator", "EndomorphicOperator", "ScalingOperator",
"DiagonalOperator", "HarmonicTransformOperator", "FFTOperator",
"FFTSmoothingOperator", "GeometryRemover",
"FFTSmoothingOperator", "GeometryRemover", "MaskOperator",
"LaplaceOperator", "SmoothnessOperator", "PowerDistributor",
"InversionEnabler", "SandwichOperator", "SamplingEnabler",
"DOFDistributor", "SelectionOperator", "MultiAdaptor",
......
# 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 <http://www.gnu.org/licenses/>.
#
# 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 ..domain_tuple import DomainTuple
from ..domains.unstructured_domain import UnstructuredDomain
from ..field import Field
from ..sugar import full
from .linear_operator import LinearOperator
class MaskOperator(LinearOperator):
def __init__(self, domain, target, xy):
self._domain = DomainTuple.make(domain)
# TODO Takes a field (boolean or 0/1)
# TODO Add MultiFields (output MultiField of unstructured domains)
assert len(xy.shape) == 2
assert xy.shape[1] == 2
self._target = UnstructuredDomain(xy.shape[0])
self._xs = xy.T[0]
self._ys = xy.T[1]
def apply(self, x, mode):
self._check_input(x, mode)
if mode == self.TIMES:
res = x.val[self._xs, self._ys]
return Field(self.target, res)
res = full(self.domain, 0.)
res[self._xs, self._ys] = x.val
return Field(self.domain, res)
@property
def capability(self):
return self.TIMES | self.ADJOINT_TIMES
@property
def domain(self):
return self._domain
@property
def target(self):
return self._target
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