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projection_default.cc
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rMUSPECTRE µSpectre
projection_default.cc
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/**
* @file projection_default.cc
*
* @author Till Junge <till.junge@altermail.ch>
*
* @date 14 Jan 2018
*
* @brief Implementation default projection implementation
*
* Copyright © 2018 Till Junge
*
* µSpectre 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, or (at
* your option) any later version.
*
* µSpectre 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 GNU Emacs; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "fft/projection_default.hh"
#include "fft/fft_engine_base.hh"
namespace
muSpectre
{
/* ---------------------------------------------------------------------- */
template
<
Dim_t
DimS
,
Dim_t
DimM
>
ProjectionDefault
<
DimS
,
DimM
>::
ProjectionDefault
(
FFT_Engine_ptr
engine
,
Formulation
form
)
:
Parent
{
std
::
move
(
engine
),
form
},
Gfield
{
make_field
<
Proj_t
>
(
"Projection Operator"
,
this
->
projection_container
)},
Ghat
{
Gfield
}
{}
/* ---------------------------------------------------------------------- */
template
<
Dim_t
DimS
,
Dim_t
DimM
>
void
ProjectionDefault
<
DimS
,
DimM
>::
apply_projection
(
Field_t
&
field
)
{
Vector_map
field_map
{
this
->
fft_engine
->
fft
(
field
)};
Real
factor
=
this
->
fft_engine
->
normalisation
();
for
(
auto
&&
tup:
akantu
::
zip
(
this
->
Ghat
,
field_map
))
{
auto
&
G
{
std
::
get
<
0
>
(
tup
)};
auto
&
f
{
std
::
get
<
1
>
(
tup
)};
f
=
factor
*
(
G
*
f
).
eval
();
}
this
->
fft_engine
->
ifft
(
field
);
}
/* ---------------------------------------------------------------------- */
template
<
Dim_t
DimS
,
Dim_t
DimM
>
Eigen
::
Map
<
Eigen
::
ArrayXXd
>
ProjectionDefault
<
DimS
,
DimM
>::
get_operator
()
{
return
this
->
Gfield
.
dyn_eigen
();
}
template
class
ProjectionDefault
<
twoD
,
twoD
>
;
template
class
ProjectionDefault
<
threeD
,
threeD
>
;
}
// muSpectre
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