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filter.hh
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Wed, Sep 4, 14:50
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rTAMAAS tamaas
filter.hh
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/*
* SPDX-License-Indentifier: AGPL-3.0-or-later
*
* Copyright (©) 2016-2023 EPFL (École Polytechnique Fédérale de Lausanne),
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
* Copyright (©) 2020-2023 Lucas Frérot
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef FILTER_H
#define FILTER_H
/* -------------------------------------------------------------------------- */
#include "fft_engine.hh"
#include "grid.hh"
#include "grid_hermitian.hh"
/* -------------------------------------------------------------------------- */
namespace
tamaas
{
template
<
UInt
dim
>
class
Filter
{
public
:
/// Default constructor
Filter
()
=
default
;
/// Destructor
virtual
~
Filter
()
=
default
;
public
:
/// Compute Filter coefficients
virtual
void
computeFilter
(
GridHermitian
<
Real
,
dim
>&
filter_coefficients
)
const
=
0
;
protected
:
/// Compute filter coefficients using lambda
template
<
typename
T
>
void
computeFilter
(
T
&&
f
,
GridHermitian
<
Real
,
dim
>&
filter
)
const
;
};
template
<
UInt
dim
>
template
<
typename
T
>
void
Filter
<
dim
>::
computeFilter
(
T
&&
f
,
GridHermitian
<
Real
,
dim
>&
filter
)
const
{
auto
wavevectors
=
FFTEngine
::
template
computeFrequencies
<
Real
,
dim
,
true
>
(
filter
.
sizes
());
Loop
::
loop
(
std
::
forward
<
T
>
(
f
),
filter
,
range
<
VectorProxy
<
Real
,
dim
>>
(
wavevectors
));
}
}
// namespace tamaas
#endif
// FILTER_H
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