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stimulation_raz.cc
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/**
* @file stimulation_raz.cc
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Till Junge <till.junge@epfl.ch>
*
* @date Wed Jul 09 21:59:47 2014
*
* @brief Remise a zero (reset to zero) stimulator
*
* @section LICENSE
*
* Copyright (©) 2010-2011 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* LibMultiScale 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.
*
* LibMultiScale 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 LibMultiScale. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "lm_common.hh"
#include "stimulation_raz.hh"
#include "lib_md.hh"
#include "lib_dd.hh"
#include "lib_continuum.hh"
#include "filter.hh"
#include <iomanip>
#include "ref_point_data.hh"
#include "communicator.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_LIBMULTISCALE__
template <typename Cont>
void StimulationRAZ<Cont>::stimulate(Cont & cont, UInt stage)
{
static const UInt Dim = Cont::Dim;
std::vector<UInt> directions;
if (this->direction < 0) {
for (UInt i = 0 ; i < Dim ; ++i) {
directions.push_back(i);
}
} else {
directions.push_back(this->direction);
}
typedef std::vector<UInt>::iterator iter;
DUMP("Stimulation RAZ fields "
<< " COEF : " << COEF
<< " pointer this " << this,DBG_INFO);
typedef typename Cont::Ref RefDof;
typename Cont::iterator it = cont.getIterator();
for (UInt i = 0; i < field.size() ; ++i) {
FieldType f = field[i];
RefDof first = it.getFirst();
for (RefDof at = it.getFirst() ; !it.end() ; at = it.getNext()) {
if (f == _velocity) {
for (iter i = directions.begin(); i != directions.end(); ++i) {
at.velocity(*i) += (COEF-1) * at.velocity(*i);
}
} else if (f == _displacement) {
for (iter i = directions.begin(); i != directions.end(); ++i) {
at.displacement(*i) += (COEF-1) * at.displacement(*i);
}
} else if (f == _force) {
for (iter i = directions.begin(); i != directions.end(); ++i) {
at.force(*i) += (COEF-1) * at.force(*i);
}
} else if (f == _position0) {
for (iter i = directions.begin(); i != directions.end(); ++i) {
at.position0(*i) = at.position(*i);
}
}
}
}
}
/* -------------------------------------------------------------------------- */
/* LMDESC RAZ
Remise a zero (reset to zero) stimulator\\
This stimulator reset some fields to zero or even rescale them according
to the options provided.
*/
/* LMEXAMPLE STIMULATION reset RAZ INPUT md FIELD displacement FIELD velocity */
/* LMHERITANCE action_interface */
template <typename _Input>
void StimulationRAZ<_Input>::declareParams(){
Stimulation<_Input>::declareParams();
/* LMKEYWORD FIELD
Set the fields that should be altered.
The value selected can be:
\begin{itemize}
\item displacement : selects the displacement field
\item velocity : selects the velocity field
\item force : selects the force field
\item position0 : selects the initial position field. Actually it is relevant for
atomic systems assigning the initial positions to the current one. \\
This is useful when a restart file needs to be generated with current positions
and a zero displacement field.
\end{itemize}
This command can be called several times for each field that need to be altered.
*/
this->parseKeyword("FIELD",field);
/* LMKEYWORD COEF
This is effective only for displacement, velocity or force field.
Instead of reset to zero it multiplies by the provided coefficient.
It enables, for instance to perform velocity damping.
*/
this->parseKeyword("COEF",COEF,0.);
/* LMKEYWORD COMPONENT
Just apply stimulation in direction COMPONENT. By default all directions
are stimulated.
*/
this->parseKeyword("COMPONENT", direction, -1);
};
/* -------------------------------------------------------------------------- */
DECLARE_STIMULATION(StimulationRAZ,LIST_ATOM_MODEL)
DECLARE_STIMULATION(StimulationRAZ,LIST_CONTINUUM_MODEL)
DECLARE_STIMULATION(StimulationRAZ,LIST_DD_MODEL)
DECLARE_STIMULATION_REFPOINT(StimulationRAZ)
DECLARE_STIMULATION_GENERIC_MESH(StimulationRAZ)
__END_LIBMULTISCALE__

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