ForceFieldOptions.hpp

/*
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 *
 * SUPPORT OPEN SCIENCE!  If you use OpenMD or its source code in your
 * research, please cite the appropriate papers when you publish your
 * work.  Good starting points are:
 *
 * [1] Meineke, et al., J. Comp. Chem. 26, 252-271 (2005).
 * [2] Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006).
 * [3] Sun, Lin & Gezelter, J. Chem. Phys. 128, 234107 (2008).
 * [4] Vardeman, Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011).
 * [5] Kuang & Gezelter, Mol. Phys., 110, 691-701 (2012).
 * [6] Lamichhane, Gezelter & Newman, J. Chem. Phys. 141, 134109 (2014).
 * [7] Lamichhane, Newman & Gezelter, J. Chem. Phys. 141, 134110 (2014).
 * [8] Bhattarai, Newman & Gezelter, Phys. Rev. B 99, 094106 (2019).
 */
 
#ifndef IO_FORCEFIELDOPTIONS_HPP
#define IO_FORCEFIELDOPTIONS_HPP
 
#include "io/ParamConstraint.hpp"
#include "types/DataHolder.hpp"
#include "utils/ParameterManager.hpp"
#include "utils/StringUtils.hpp"
#include "utils/simError.h"
 
namespace OpenMD {
 
  class ForceFieldOptions : public DataHolder {
    DeclareParameter(Name, std::string);
    DeclareParameter(vdWtype, std::string);
    DeclareParameter(DistanceMixingRule, std::string);
    DeclareParameter(DistanceType, std::string);
    DeclareParameter(EnergyMixingRule, std::string);
    DeclareParameter(EnergyUnitScaling, RealType);
    DeclareParameter(MetallicEnergyUnitScaling, RealType);
    DeclareParameter(FluctuatingChargeEnergyUnitScaling, RealType);
    DeclareParameter(DistanceUnitScaling, RealType);
    DeclareParameter(AngleUnitScaling, RealType);
    DeclareParameter(ChargeUnitScaling, RealType);
    DeclareParameter(OxidationStateScaling, RealType);
    DeclareParameter(TorsionAngleConvention, std::string);
    DeclareParameter(vdw12scale, RealType);
    DeclareParameter(vdw13scale, RealType);
    DeclareParameter(vdw14scale, RealType);
    DeclareParameter(BondForceConstantScaling, RealType);
    DeclareParameter(BendForceConstantScaling, RealType);
    DeclareParameter(electrostatic12scale, RealType);
    DeclareParameter(electrostatic13scale, RealType);
    DeclareParameter(electrostatic14scale, RealType);
    DeclareParameter(GayBerneMu, RealType);
    DeclareParameter(GayBerneNu, RealType);
    DeclareParameter(EAMMixingMethod, std::string);
    DeclareParameter(DelayedParameterCalculation, bool);
 
  public:
    ForceFieldOptions();
    ForceFieldOptions(const ForceFieldOptions&);
    ForceFieldOptions& operator=(const ForceFieldOptions&);
 
    void validateOptions() {
      CheckParameter(vdWtype, isEqualIgnoreCase(std::string("Lennard-Jones")));
      CheckParameter(DistanceMixingRule,
                     isEqualIgnoreCase(std::string("arithmetic")) ||
                         isEqualIgnoreCase(std::string("geometric")) ||
                         isEqualIgnoreCase(std::string("cubic")));
      CheckParameter(DistanceType, isEqualIgnoreCase(std::string("sigma")) ||
                                       isEqualIgnoreCase(std::string("Rmin")));
      CheckParameter(EnergyMixingRule,
                     isEqualIgnoreCase(std::string("arithmetic")) ||
                         isEqualIgnoreCase(std::string("geometric")) ||
                         isEqualIgnoreCase(std::string("hhg")));
      CheckParameter(TorsionAngleConvention,
                     isEqualIgnoreCase(std::string("180_is_trans")) ||
                         isEqualIgnoreCase(std::string("0_is_trans")));
      CheckParameter(EAMMixingMethod,
                     isEqualIgnoreCase(std::string("Johnson")) ||
                         isEqualIgnoreCase(std::string("Daw")) ||
                         isEqualIgnoreCase(std::string("DREAM1")) ||
                         isEqualIgnoreCase(std::string("DREAM2")));
    }
 
    bool setData(const std::string& keyword, const std::string& value) {
      bool result(false);
      ParamMap::iterator i = parameters_.find(keyword);
      if (i != parameters_.end()) {
        if (isInteger(value)) {
          int ival = lexi_cast<int>(value);
          result   = i->second->setData(ival);
        } else if (isType<RealType>(value)) {
          RealType dval = lexi_cast<RealType>(value);
          result        = i->second->setData(dval);
        } else {
          result = i->second->setData(value);
        }
 
        if (!result) {
          snprintf(painCave.errMsg, MAX_SIM_ERROR_MSG_LENGTH,
                   "Unrecognized data type for keyword: %s = %s\n",
                   keyword.c_str(), value.c_str());
          painCave.isFatal = 1;
          simError();
        }
      } else {
        snprintf(painCave.errMsg, MAX_SIM_ERROR_MSG_LENGTH,
                 "%s is an unrecognized keyword\n", keyword.c_str());
        painCave.isFatal = 0;
        simError();
      }
 
      return result;
    }
 
  private:
    using ParamMap = std::map<std::string, ParameterBase*>;
    ParamMap parameters_;
  };
}  // namespace OpenMD
 
#endif