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rMUSPECTRE µSpectre
cell_factory.hh
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/**
* @file cell_factory.hh
*
* @author Till Junge <till.junge@epfl.ch>
*
* @date 15 Dec 2017
*
* @brief Cell factories to help create cells with ease
*
* Copyright © 2017 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.
*/
#ifndef CELL_FACTORY_H
#define CELL_FACTORY_H
#include "common/common.hh"
#include "common/ccoord_operations.hh"
#include "cell/cell_base.hh"
#include "fft/projection_finite_strain_fast.hh"
#include "fft/projection_small_strain.hh"
#include "fft/fftw_engine.hh"
#include <memory>
namespace muSpectre {
/**
* Create a unique ptr to a Projection operator (with appropriate
* FFT_engine) to be used in a cell constructor
*/
template <Dim_t DimS, Dim_t DimM,
typename FFTEngine=FFTWEngine<DimS, DimM>>
inline
std::unique_ptr<ProjectionBase<DimS, DimM>>
cell_input(Ccoord_t<DimS> resolutions,
Rcoord_t<DimS> lengths,
Formulation form) {
auto fft_ptr{std::make_unique<FFTEngine>(resolutions, lengths)};
switch (form)
{
case Formulation::finite_strain: {
using Projection = ProjectionFiniteStrainFast<DimS, DimM>;
return std::make_unique<Projection>(std::move(fft_ptr));
break;
}
case Formulation::small_strain: {
using Projection = ProjectionSmallStrain<DimS, DimM>;
return std::make_unique<Projection>(std::move(fft_ptr));
break;
}
default: {
throw std::runtime_error("unknow formulation");
break;
}
}
}
/**
* convenience function to create a cell (avoids having to build
* and move the chain of unique_ptrs
*/
template <size_t DimS, size_t DimM=DimS,
typename Cell=CellBase<DimS, DimM>,
typename FFTEngine=FFTWEngine<DimS, DimM>>
inline
Cell make_cell(Ccoord_t<DimS> resolutions,
Rcoord_t<DimS> lengths,
Formulation form) {
auto && input = cell_input<DimS, DimM, FFTEngine>(resolutions, lengths, form);
auto cell{Cell{std::move(input)}};
return cell;
}
} // muSpectre
#endif /* CELL_FACTORY_H */
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