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Fake.cpp
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Fake.cpp
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/* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Copyright (c) 2012-2019 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 "Colvar.h"
#include "ActionRegister.h"
#include <string>
#include <cmath>
#include <cassert>
#include <iostream>
using namespace std;
namespace PLMD {
namespace colvar {
//+PLUMEDOC COLVAR FAKE
/*
This is a fake colvar container used by cltools or various other actions that supports input and period definitions
\par Examples
\plumedfile
FAKE ATOMS=1 PERIODIC=-3.14,3.14 LABEL=d2
\endplumedfile
*/
//+ENDPLUMEDOC
class ColvarFake : public Colvar {
public:
static void registerKeywords( Keywords& keys );
explicit ColvarFake(const ActionOptions&);
// active methods:
virtual void calculate();
};
PLUMED_REGISTER_ACTION(ColvarFake,"FAKE")
void ColvarFake::registerKeywords( Keywords& keys ) {
Colvar::registerKeywords( keys );
keys.add("atoms","ATOMS","the fake atom index, a number is enough");
keys.reserve("compulsory","PERIODIC","if the output of your function is periodic then you should specify the periodicity of the function. If the output is not periodic you must state this using PERIODIC=NO,NO (one for the lower and the other for the upper boundary). For multicomponents then it is PERIODIC=mincomp1,maxcomp1,mincomp2,maxcomp2 etc ");
keys.use("PERIODIC");
keys.add("optional","COMPONENTS","additional components that this variable is supposed to have. Periodicity is ruled by PERIODIC keyword ");
}
ColvarFake::ColvarFake(const ActionOptions&ao):
PLUMED_COLVAR_INIT(ao)
{
vector<AtomNumber> atoms;
parseAtomList("ATOMS",atoms);
vector<string> comps;
// multiple components for this variable
parseVector("COMPONENTS",comps);
if(comps.size()!=0) {
for(unsigned i=0; i<comps.size(); i++) {
addComponentWithDerivatives(comps[i]);
}
// periodicity
} else {
// only one component for this variable
addValueWithDerivatives();
}
std::vector<std::string> period;
parseVector("PERIODIC",period);
if(period.size()!=0) {
plumed_massert(static_cast<unsigned>(getNumberOfComponents()*2)==period.size(),"the periodicty should coincide with the number of components");
if(comps.size()!=0) {
for(int i=0; i<getNumberOfComponents(); i++) {
string pp=comps[i];
if(period[i*2]!="none" && period[i*2+1]!="none" ) {
componentIsPeriodic(pp,period[i*2],period[i*2+1]);
} else {
componentIsNotPeriodic(pp);
}
}
} else {
if(period[0]!="none" && period[1]!="none" ) {
setPeriodic(period[0],period[1]);
} else {
setNotPeriodic();
}
}
} else {
if(comps.size()!=0) {
for(int i=0; i<getNumberOfComponents(); i++) {
componentIsNotPeriodic(getPntrToComponent(i)->getName());
}
} else {
setNotPeriodic();
}
}
checkRead();
requestAtoms(atoms);
}
// calculator
void ColvarFake::calculate() {
plumed_merror("you should never have got here");
}
}
}