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dcfft.hh
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Sat, Jun 1, 02:38

dcfft.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 DCFFT_HH
#define DCFFT_HH
/* -------------------------------------------------------------------------- */
#include "westergaard.hh"
/* -------------------------------------------------------------------------- */
namespace tamaas {
/**
* @brief Non-periodic Boussinesq operator, computed with padded FFT
*/
class DCFFT
: public Westergaard<model_type::basic_2d, IntegralOperator::neumann> {
using trait = model_type_traits<model_type::basic_2d>;
static constexpr UInt dim = trait::dimension;
static constexpr UInt bdim = trait::boundary_dimension;
static constexpr UInt comp = trait::components;
public:
DCFFT(Model* model);
/// Apply influence coefficients in Fourier domain
void apply(GridBase<Real>& input, GridBase<Real>& output) const override;
private:
/// Init influence with real-space square patch solution
void initInfluence();
private:
mutable Grid<Real, bdim> extended_buffer;
};
} // namespace tamaas
#endif // DCFFT_HH

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