Page Menu
Home
c4science
Search
Configure Global Search
Log In
Files
F81237526
surface_generator_filter.cpp
No One
Temporary
Actions
Download File
Edit File
Delete File
View Transforms
Subscribe
Mute Notifications
Award Token
Subscribers
None
File Metadata
Details
File Info
Storage
Attached
Created
Wed, Sep 4, 22:10
Size
2 KB
Mime Type
text/x-c++
Expires
Fri, Sep 6, 22:10 (2 d)
Engine
blob
Format
Raw Data
Handle
20535088
Attached To
rTAMAAS tamaas
surface_generator_filter.cpp
View Options
/*
* 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/>.
*
*/
/* -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------- */
#include "surface_generator_filter.hh"
#include <iostream>
/* -------------------------------------------------------------------------- */
namespace tamaas {
/* -------------------------------------------------------------------------- */
template <UInt dim>
void SurfaceGeneratorFilter<dim>::applyFilterOnSource() {
GridHermitian<Real, dim> fft_white_noise(filter_coefficients.sizes(), 1);
engine->forward(this->white_noise, fft_white_noise);
fft_white_noise *= filter_coefficients;
engine->backward(this->grid, fft_white_noise);
}
/* -------------------------------------------------------------------------- */
template <UInt dim>
Grid<Real, dim>& SurfaceGeneratorFilter<dim>::buildSurface() {
TAMAAS_ASSERT(this->grid.dataSize() != 0,
"the size of the grid is zero, did you call setSizes() ?");
TAMAAS_ASSERT(this->filter, "filter is null, did you call setFilter() ?");
// Resizing arrays
this->white_noise.resize(this->grid.sizes());
auto hermitian_dim =
GridHermitian<Real, dim>::hermitianDimensions(this->grid.sizes());
this->filter_coefficients.resize(hermitian_dim);
/// Generating white noise with gaussian distribution
this->generateWhiteNoise<normal_distribution<Real>>();
/// Applying filters
filter->computeFilter(this->filter_coefficients);
this->applyFilterOnSource();
/// Normalizing surface for hrms independent of number of points
this->grid *= std::sqrt(this->grid.globalDataSize());
return this->grid;
}
/* -------------------------------------------------------------------------- */
template class SurfaceGeneratorFilter<1>;
template class SurfaceGeneratorFilter<2>;
/* -------------------------------------------------------------------------- */
} // namespace tamaas
Event Timeline
Log In to Comment