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numpy.hh
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Sat, Sep 28, 04:29
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rTAMAAS tamaas
numpy.hh
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/*
* SPDX-License-Indentifier: AGPL-3.0-or-later
*
* Copyright (©) 2016-2021 EPFL (École Polytechnique Fédérale de Lausanne),
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* 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 NUMPY_HH
#define NUMPY_HH
/* -------------------------------------------------------------------------- */
#include "grid_base.hh"
#include "tamaas.hh"
/* -------------------------------------------------------------------------- */
#include <pybind11/numpy.h>
#include <pybind11/pybind11.h>
namespace
tamaas
{
namespace
wrap
{
namespace
py
=
pybind11
;
/// Type alias for usual numpy array type
template
<
typename
T
>
using
numpy
=
py
::
array_t
<
T
,
py
::
array
::
c_style
|
py
::
array
::
forcecast
>
;
/// GridBase helper class wrapping numpy array
template
<
typename
T
>
class
GridBaseNumpy
:
public
GridBase
<
T
>
{
public
:
GridBaseNumpy
(
numpy
<
T
>&
buffer
)
:
GridBase
<
T
>
()
{
this
->
nb_components
=
1
;
this
->
data
.
wrapMemory
(
buffer
.
mutable_data
(),
buffer
.
size
());
}
};
/// Grid helper class wrapping numpy array
template
<
class
Parent
>
class
GridNumpy
:
public
Parent
{
public
:
GridNumpy
(
numpy
<
typename
Parent
::
value_type
>&
buffer
)
:
Parent
()
{
auto
*
array_shape
=
buffer
.
shape
();
const
UInt
ndim
=
buffer
.
ndim
();
if
(
ndim
>
Parent
::
dimension
+
1
||
ndim
<
Parent
::
dimension
)
TAMAAS_EXCEPTION
(
"Numpy array dimension do not match expected grid dimensions"
);
if
(
ndim
==
Parent
::
dimension
+
1
)
this
->
nb_components
=
array_shape
[
ndim
-
1
];
std
::
copy_n
(
array_shape
,
Parent
::
dimension
,
this
->
n
.
begin
());
this
->
computeStrides
();
this
->
data
.
wrapMemory
(
buffer
.
mutable_data
(),
this
->
computeSize
());
}
};
/// Surface helper class wrapping numpy array
template
<
class
Parent
>
class
SurfaceNumpy
:
public
Parent
{
public
:
SurfaceNumpy
(
numpy
<
typename
Parent
::
value_type
>&
buffer
)
:
Parent
()
{
auto
*
array_shape
=
buffer
.
shape
();
if
(
buffer
.
ndim
()
!=
2
)
TAMAAS_EXCEPTION
(
"Numpy array dimension do not match expected surface dimensions"
);
std
::
copy_n
(
array_shape
,
Parent
::
dimension
,
this
->
n
.
begin
());
this
->
computeStrides
();
this
->
data
.
wrapMemory
(
buffer
.
mutable_data
(),
this
->
computeSize
());
}
};
}
// namespace wrap
}
// namespace tamaas
#endif
// NUMPY_HH
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