CustomCompoundBondForce.h

#ifndef OPENMM_CUSTOMCOMPOUNDBONDFORCE_H_
#define OPENMM_CUSTOMCOMPOUNDBONDFORCE_H_

/* -------------------------------------------------------------------------- *
 *                                   OpenMM                                   *
 * -------------------------------------------------------------------------- *
 * This is part of the OpenMM molecular simulation toolkit originating from   *
 * Simbios, the NIH National Center for Physics-Based Simulation of           *
 * Biological Structures at Stanford, funded under the NIH Roadmap for        *
 * Medical Research, grant U54 GM072970. See https://simtk.org.               *
 *                                                                            *
 * Portions copyright (c) 2008-2012 Stanford University and the Authors.      *
 * Authors: Peter Eastman                                                     *
 * Contributors:                                                              *
 *                                                                            *
 * Permission is hereby granted, free of charge, to any person obtaining a    *
 * copy of this software and associated documentation files (the "Software"), *
 * to deal in the Software without restriction, including without limitation  *
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,   *
 * and/or sell copies of the Software, and to permit persons to whom the      *
 * Software is furnished to do so, subject to the following conditions:       *
 *                                                                            *
 * The above copyright notice and this permission notice shall be included in *
 * all copies or substantial portions of the Software.                        *
 *                                                                            *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,   *
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL    *
 * THE AUTHORS, CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,    *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR      *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE  *
 * USE OR OTHER DEALINGS IN THE SOFTWARE.                                     *
 * -------------------------------------------------------------------------- */

#include "Force.h"
#include "Vec3.h"
#include <vector>
#include "internal/windowsExport.h"

namespace OpenMM {

class OPENMM_EXPORT CustomCompoundBondForce : public Force {
public:
    explicit CustomCompoundBondForce(int numParticles, const std::string& energy);
    int getNumParticlesPerBond() const {
        return particlesPerBond;
    }
    int getNumBonds() const {
        return bonds.size();
    }
    int getNumPerBondParameters() const {
        return bondParameters.size();
    }
    int getNumGlobalParameters() const {
        return globalParameters.size();
    }
    int getNumFunctions() const {
        return functions.size();
    }
    const std::string& getEnergyFunction() const;
    void setEnergyFunction(const std::string& energy);
    int addPerBondParameter(const std::string& name);
    const std::string& getPerBondParameterName(int index) const;
    void setPerBondParameterName(int index, const std::string& name);
    int addGlobalParameter(const std::string& name, double defaultValue);
    const std::string& getGlobalParameterName(int index) const;
    void setGlobalParameterName(int index, const std::string& name);
    double getGlobalParameterDefaultValue(int index) const;
    void setGlobalParameterDefaultValue(int index, double defaultValue);
    int addBond(const std::vector<int>& particles, const std::vector<double>& parameters);
    void getBondParameters(int index, std::vector<int>& particles, std::vector<double>& parameters) const;
    void setBondParameters(int index, const std::vector<int>& particles, const std::vector<double>& parameters);
    int addFunction(const std::string& name, const std::vector<double>& values, double min, double max);
    void getFunctionParameters(int index, std::string& name, std::vector<double>& values, double& min, double& max) const;
    void setFunctionParameters(int index, const std::string& name, const std::vector<double>& values, double min, double max);
    void updateParametersInContext(Context& context);
protected:
    ForceImpl* createImpl() const;
private:
    class BondInfo;
    class BondParameterInfo;
    class GlobalParameterInfo;
    class FunctionInfo;
    int particlesPerBond;
    std::string energyExpression;
    std::vector<BondParameterInfo> bondParameters;
    std::vector<GlobalParameterInfo> globalParameters;
    std::vector<BondInfo> bonds;
    std::vector<FunctionInfo> functions;
};

class CustomCompoundBondForce::BondInfo {
public:
    std::vector<int> particles;
    std::vector<double> parameters;
    BondInfo() {
    }
    BondInfo(const std::vector<int>& particles, const std::vector<double>& parameters) :
        particles(particles), parameters(parameters) {
    }
};

class CustomCompoundBondForce::BondParameterInfo {
public:
    std::string name;
    BondParameterInfo() {
    }
    BondParameterInfo(const std::string& name) : name(name) {
    }
};

class CustomCompoundBondForce::GlobalParameterInfo {
public:
    std::string name;
    double defaultValue;
    GlobalParameterInfo() {
    }
    GlobalParameterInfo(const std::string& name, double defaultValue) : name(name), defaultValue(defaultValue) {
    }
};

class CustomCompoundBondForce::FunctionInfo {
public:
    std::string name;
    std::vector<double> values;
    double min, max;
    FunctionInfo() {
    }
    FunctionInfo(const std::string& name, const std::vector<double>& values, double min, double max) :
        name(name), values(values), min(min), max(max) {
    }
};

} // namespace OpenMM

#endif /*OPENMM_CUSTOMCOMPOUNDBONDFORCE_H_*/