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tamaas/src/surface_generator_filter.hh
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surface_generator_filter.hh
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/**
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
*
* @section LICENSE
*
* Copyright (©) 2016 EPFL (Ecole Polytechnique Fédérale de
* Lausanne) Laboratory (LSMS - Laboratoire de Simulation en Mécanique des
* Solides)
*
* Tamaas is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Tamaas 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 Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Tamaas. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef SURFACE_GENERATOR_FILTER_H
#define SURFACE_GENERATOR_FILTER_H
/* -------------------------------------------------------------------------- */
#include "surface_generator.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_TAMAAS__
class SurfaceGeneratorFilter : public virtual SurfaceGenerator {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
//! default constructor
SurfaceGeneratorFilter();
//! destructor
~SurfaceGeneratorFilter();
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
Surface<Real> & buildSurface();
void Init();
//! clear the random surface
void clearSource();
protected:
virtual void computeFilterCoefficients()=0;
void applyFilterOnSource();
void generateWhiteNoiseFFT();
void generateHFFT();
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
//! filter coefficients
Surface<Real> * h_coeff;
//! white noise
Surface<Real> * sources;
//! cutofffrequency
Real alpha;
SurfaceComplex<Real> * surface_spectral;
SurfaceComplex<Real> * white_noise_FFT;
SurfaceComplex<Real> * h_coeff_power;
};
__END_TAMAAS__
#endif
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