void CustomBondForceProxy::serialize(const void* object, SerializationNode& node) const {
    node.setIntProperty("version", 1);
    const CustomBondForce& force = *reinterpret_cast<const CustomBondForce*>(object);
    node.setStringProperty("energy", force.getEnergyFunction());
    SerializationNode& perBondParams = node.createChildNode("PerBondParameters");
    for (int i = 0; i < force.getNumPerBondParameters(); i++) {
        perBondParams.createChildNode("Parameter").setStringProperty("name", force.getPerBondParameterName(i));
    }
    SerializationNode& globalParams = node.createChildNode("GlobalParameters");
    for (int i = 0; i < force.getNumGlobalParameters(); i++) {
        globalParams.createChildNode("Parameter").setStringProperty("name", force.getGlobalParameterName(i)).setDoubleProperty("default", force.getGlobalParameterDefaultValue(i));
    }
    SerializationNode& bonds = node.createChildNode("Bonds");
    for (int i = 0; i < force.getNumBonds(); i++) {
        int p1, p2;
        vector<double> params;
        force.getBondParameters(i, p1, p2, params);
        SerializationNode& node = bonds.createChildNode("Bond").setIntProperty("p1", p1).setIntProperty("p2", p2);
        for (int j = 0; j < (int) params.size(); j++) {
            stringstream key;
            key << "param";
            key << j+1;
            node.setDoubleProperty(key.str(), params[j]);
        }
    }
}
void CustomTorsionForceProxy::serialize(const void* object, SerializationNode& node) const {
    node.setIntProperty("version", 2);
    const CustomTorsionForce& force = *reinterpret_cast<const CustomTorsionForce*>(object);
    node.setIntProperty("forceGroup", force.getForceGroup());
    node.setBoolProperty("usesPeriodic", force.usesPeriodicBoundaryConditions());
    node.setStringProperty("energy", force.getEnergyFunction());
    SerializationNode& perTorsionParams = node.createChildNode("PerTorsionParameters");
    for (int i = 0; i < force.getNumPerTorsionParameters(); i++) {
        perTorsionParams.createChildNode("Parameter").setStringProperty("name", force.getPerTorsionParameterName(i));
    }
    SerializationNode& globalParams = node.createChildNode("GlobalParameters");
    for (int i = 0; i < force.getNumGlobalParameters(); i++) {
        globalParams.createChildNode("Parameter").setStringProperty("name", force.getGlobalParameterName(i)).setDoubleProperty("default", force.getGlobalParameterDefaultValue(i));
    }
    SerializationNode& torsions = node.createChildNode("Torsions");
    for (int i = 0; i < force.getNumTorsions(); i++) {
        int p1, p2, p3, p4;
        vector<double> params;
        force.getTorsionParameters(i, p1, p2, p3, p4, params);
        SerializationNode& node = torsions.createChildNode("Torsion").setIntProperty("p1", p1).setIntProperty("p2", p2).setIntProperty("p3", p3).setIntProperty("p4", p4);
        for (int j = 0; j < (int) params.size(); j++) {
            stringstream key;
            key << "param";
            key << j+1;
            node.setDoubleProperty(key.str(), params[j]);
        }
    }
}
void CustomNonbondedForceProxy::serialize(const void* object, SerializationNode& node) const {
    node.setIntProperty("version", 2);
    const CustomNonbondedForce& force = *reinterpret_cast<const CustomNonbondedForce*>(object);
    node.setIntProperty("forceGroup", force.getForceGroup());
    node.setStringProperty("energy", force.getEnergyFunction());
    node.setIntProperty("method", (int) force.getNonbondedMethod());
    node.setDoubleProperty("cutoff", force.getCutoffDistance());
    node.setBoolProperty("useSwitchingFunction", force.getUseSwitchingFunction());
    node.setDoubleProperty("switchingDistance", force.getSwitchingDistance());
    node.setBoolProperty("useLongRangeCorrection", force.getUseLongRangeCorrection());
    SerializationNode& perParticleParams = node.createChildNode("PerParticleParameters");
    for (int i = 0; i < force.getNumPerParticleParameters(); i++) {
        perParticleParams.createChildNode("Parameter").setStringProperty("name", force.getPerParticleParameterName(i));
    }
    SerializationNode& globalParams = node.createChildNode("GlobalParameters");
    for (int i = 0; i < force.getNumGlobalParameters(); i++) {
        globalParams.createChildNode("Parameter").setStringProperty("name", force.getGlobalParameterName(i)).setDoubleProperty("default", force.getGlobalParameterDefaultValue(i));
    }
    SerializationNode& energyDerivs = node.createChildNode("EnergyParameterDerivatives");
    for (int i = 0; i < force.getNumEnergyParameterDerivatives(); i++) {
        energyDerivs.createChildNode("Parameter").setStringProperty("name", force.getEnergyParameterDerivativeName(i));
    }
    SerializationNode& particles = node.createChildNode("Particles");
    for (int i = 0; i < force.getNumParticles(); i++) {
        vector<double> params;
        force.getParticleParameters(i, params);
        SerializationNode& node = particles.createChildNode("Particle");
        for (int j = 0; j < (int) params.size(); j++) {
            stringstream key;
            key << "param";
            key << j+1;
            node.setDoubleProperty(key.str(), params[j]);
        }
    }
    SerializationNode& exclusions = node.createChildNode("Exclusions");
    for (int i = 0; i < force.getNumExclusions(); i++) {
        int particle1, particle2;
        force.getExclusionParticles(i, particle1, particle2);
        exclusions.createChildNode("Exclusion").setIntProperty("p1", particle1).setIntProperty("p2", particle2);
    }
    SerializationNode& functions = node.createChildNode("Functions");
    for (int i = 0; i < force.getNumTabulatedFunctions(); i++)
        functions.createChildNode("Function", &force.getTabulatedFunction(i)).setStringProperty("name", force.getTabulatedFunctionName(i));

    SerializationNode& interactionGroups = node.createChildNode("InteractionGroups");
    for (int i = 0; i < force.getNumInteractionGroups(); i++) {
        SerializationNode& interactionGroup = interactionGroups.createChildNode("InteractionGroup");
        std::set<int> set1;
        std::set<int> set2;
        force.getInteractionGroupParameters(i, set1, set2);
        SerializationNode& set1node = interactionGroup.createChildNode("Set1");
        for (std::set<int>::iterator it = set1.begin(); it != set1.end(); ++it)
            set1node.createChildNode("Particle").setIntProperty("index", *it);
        SerializationNode& set2node = interactionGroup.createChildNode("Set2");
        for (std::set<int>::iterator it = set2.begin(); it != set2.end(); ++it)
            set2node.createChildNode("Particle").setIntProperty("index", *it);
    }
}
void CustomNonbondedForceProxy::serialize(const void* object, SerializationNode& node) const {
    node.setIntProperty("version", 1);
    const CustomNonbondedForce& force = *reinterpret_cast<const CustomNonbondedForce*>(object);
    node.setStringProperty("energy", force.getEnergyFunction());
    node.setIntProperty("method", (int) force.getNonbondedMethod());
    node.setDoubleProperty("cutoff", force.getCutoffDistance());
    SerializationNode& perParticleParams = node.createChildNode("PerParticleParameters");
    for (int i = 0; i < force.getNumPerParticleParameters(); i++) {
        perParticleParams.createChildNode("Parameter").setStringProperty("name", force.getPerParticleParameterName(i));
    }
    SerializationNode& globalParams = node.createChildNode("GlobalParameters");
    for (int i = 0; i < force.getNumGlobalParameters(); i++) {
        globalParams.createChildNode("Parameter").setStringProperty("name", force.getGlobalParameterName(i)).setDoubleProperty("default", force.getGlobalParameterDefaultValue(i));
    }
    SerializationNode& particles = node.createChildNode("Particles");
    for (int i = 0; i < force.getNumParticles(); i++) {
        vector<double> params;
        force.getParticleParameters(i, params);
        SerializationNode& node = particles.createChildNode("Particle");
        for (int j = 0; j < (int) params.size(); j++) {
            stringstream key;
            key << "param";
            key << j+1;
            node.setDoubleProperty(key.str(), params[j]);
        }
    }
    SerializationNode& exclusions = node.createChildNode("Exclusions");
    for (int i = 0; i < force.getNumExclusions(); i++) {
        int particle1, particle2;
        force.getExclusionParticles(i, particle1, particle2);
        exclusions.createChildNode("Exclusion").setIntProperty("p1", particle1).setIntProperty("p2", particle2);
    }
    SerializationNode& functions = node.createChildNode("Functions");
    for (int i = 0; i < force.getNumFunctions(); i++) {
        string name;
        vector<double> values;
        double min, max;
        force.getFunctionParameters(i, name, values, min, max);
        SerializationNode& node = functions.createChildNode("Function").setStringProperty("name", name).setDoubleProperty("min", min).setDoubleProperty("max", max);
        SerializationNode& valuesNode = node.createChildNode("Values");
        for (int j = 0; j < (int) values.size(); j++)
            valuesNode.createChildNode("Value").setDoubleProperty("v", values[j]);
    }
}
void CustomCompoundBondForceProxy::serialize(const void* object, SerializationNode& node) const {
    node.setIntProperty("version", 3);
    const CustomCompoundBondForce& force = *reinterpret_cast<const CustomCompoundBondForce*>(object);
    node.setIntProperty("forceGroup", force.getForceGroup());
    node.setBoolProperty("usesPeriodic", force.usesPeriodicBoundaryConditions());
    node.setIntProperty("particles", force.getNumParticlesPerBond());
    node.setStringProperty("energy", force.getEnergyFunction());
    SerializationNode& perBondParams = node.createChildNode("PerBondParameters");
    for (int i = 0; i < force.getNumPerBondParameters(); i++) {
        perBondParams.createChildNode("Parameter").setStringProperty("name", force.getPerBondParameterName(i));
    }
    SerializationNode& globalParams = node.createChildNode("GlobalParameters");
    for (int i = 0; i < force.getNumGlobalParameters(); i++) {
        globalParams.createChildNode("Parameter").setStringProperty("name", force.getGlobalParameterName(i)).setDoubleProperty("default", force.getGlobalParameterDefaultValue(i));
    }
    SerializationNode& energyDerivs = node.createChildNode("EnergyParameterDerivatives");
    for (int i = 0; i < force.getNumEnergyParameterDerivatives(); i++) {
        energyDerivs.createChildNode("Parameter").setStringProperty("name", force.getEnergyParameterDerivativeName(i));
    }
    SerializationNode& bonds = node.createChildNode("Bonds");
    for (int i = 0; i < force.getNumBonds(); i++) {
        vector<int> particles;
        vector<double> params;
        force.getBondParameters(i, particles, params);
        SerializationNode& node = bonds.createChildNode("Bond");
        for (int j = 0; j < (int) particles.size(); j++) {
            stringstream key;
            key << "p";
            key << j+1;
            node.setIntProperty(key.str(), particles[j]);
        }
        for (int j = 0; j < (int) params.size(); j++) {
            stringstream key;
            key << "param";
            key << j+1;
            node.setDoubleProperty(key.str(), params[j]);
        }
    }
    SerializationNode& functions = node.createChildNode("Functions");
    for (int i = 0; i < force.getNumTabulatedFunctions(); i++)
        functions.createChildNode("Function", &force.getTabulatedFunction(i)).setStringProperty("name", force.getTabulatedFunctionName(i));
}