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SpathVessel.cpp
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SpathVessel.cpp
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/* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Copyright (c) 2013-2020 The plumed team
(see the PEOPLE file at the root of the distribution for a list of names)
See http://www.plumed.org for more information.
This file is part of plumed, version 2.
plumed 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.
plumed 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 plumed. If not, see <http://www.gnu.org/licenses/>.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
#include "vesselbase/VesselRegister.h"
#include "vesselbase/FunctionVessel.h"
#include "Mapping.h"
namespace PLMD {
namespace mapping {
class SpathVessel : public vesselbase::FunctionVessel {
private:
bool foundoneclose;
Mapping* mymap;
public:
static void registerKeywords( Keywords& keys );
static void reserveKeyword( Keywords& keys );
explicit SpathVessel( const vesselbase::VesselOptions& da );
std::string value_descriptor();
void prepare();
void calculate( const unsigned& current, MultiValue& myvals, std::vector<double>& buffer, std::vector<unsigned>& der_index ) const ;
};
PLUMED_REGISTER_VESSEL(SpathVessel,"SPATH")
void SpathVessel::registerKeywords( Keywords& keys ) {
FunctionVessel::registerKeywords(keys);
}
void SpathVessel::reserveKeyword( Keywords& keys ) {
keys.reserve("vessel","SPATH","docs should not appear");
keys.addOutputComponent("spath","SPATH","the position on the path");
}
SpathVessel::SpathVessel( const vesselbase::VesselOptions& da ):
FunctionVessel(da),
foundoneclose(false)
{
mymap=dynamic_cast<Mapping*>( getAction() );
plumed_massert( mymap, "SpathVessel can only be used with mappings");
// Retrieve the index of the property in the underlying mapping
usetol=true; norm=true;
for(unsigned i=0; i<mymap->getFullNumberOfTasks(); ++i) {
if( mymap->getTaskCode(i)!=mymap->getPositionInFullTaskList(i) ) error("mismatched tasks and codes");
}
}
std::string SpathVessel::value_descriptor() {
return "the position on the path";
}
void SpathVessel::prepare() {
foundoneclose=false;
}
void SpathVessel::calculate( const unsigned& current, MultiValue& myvals, std::vector<double>& buffer, std::vector<unsigned>& der_index ) const {
double pp=mymap->getPropertyValue( current, getLabel() ), weight=myvals.get(0);
if( weight<getTolerance() ) return;
unsigned nderivatives=getFinalValue()->getNumberOfDerivatives();
buffer[bufstart] += weight*pp; buffer[bufstart+1+nderivatives] += weight;
if( getAction()->derivativesAreRequired() ) {
myvals.chainRule( 0, 0, 1, 0, pp, bufstart, buffer );
myvals.chainRule( 0, 1, 1, 0, 1.0, bufstart, buffer );
}
}
}
}