HarmonicCvBias.h

#ifndef MCMD_HARMONIC_CV_BIAS_H
#define MCMD_HARMONIC_CV_BIAS_H

/*
* Simpatico - Simulation Package for Polymeric and Molecular Liquids
*
* Copyright 2010 - 2017, The Regents of the University of Minnesota
* Distributed under the terms of the GNU General Public License.
*/

#include <mcMd/colvars/CvBias.h>

namespace McMd
{

   using namespace Util;

   class HarmonicCvBias : public CvBias
   {

   public:

      HarmonicCvBias();

      virtual ~HarmonicCvBias();

      virtual void readParameters(std::istream& in);

      virtual void loadParameters(Serializable::IArchive& ar);

      virtual void save(Serializable::OArchive& ar);

      virtual double value(double cv);

      virtual double derivative(double cv);

   private:

      // Central value of collective variable.
      double cv0_;

      // Spring constant
      double k_;

   };

}
#endif