/* -------------------------------------------------------------------------- *
 *                                   OpenMM                                   *
 * -------------------------------------------------------------------------- *
 * This is part of the OpenMM molecular simulation toolkit.                   *
 * See https://openmm.org/development.                                        *
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 * Portions copyright (c) 2008-2009 Stanford University and the Authors.      *
 * Authors: Peter Eastman                                                     *
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#include "openmm/Force.h"
#include "openmm/OpenMMException.h"
#include "openmm/GBSAOBCForce.h"
#include "openmm/internal/AssertionUtilities.h"
#include "openmm/internal/GBSAOBCForceImpl.h"

using namespace OpenMM;

GBSAOBCForce::GBSAOBCForce() : nonbondedMethod(NoCutoff), cutoffDistance(1.0), solventDielectric(78.3), soluteDielectric(1.0), surfaceAreaEnergy(2.25936) {
}

int GBSAOBCForce::addParticle(double charge, double radius, double scalingFactor) {
    particles.push_back(ParticleInfo(charge, radius, scalingFactor));
    return particles.size()-1;
}

void GBSAOBCForce::getParticleParameters(int index, double& charge, double& radius, double& scalingFactor) const {
    ASSERT_VALID_INDEX(index, particles);
    charge = particles[index].charge;
    radius = particles[index].radius;
    scalingFactor = particles[index].scalingFactor;
}

void GBSAOBCForce::setParticleParameters(int index, double charge, double radius, double scalingFactor) {
    ASSERT_VALID_INDEX(index, particles);
    particles[index].charge = charge;
    particles[index].radius = radius;
    particles[index].scalingFactor = scalingFactor;
}

GBSAOBCForce::NonbondedMethod GBSAOBCForce::getNonbondedMethod() const {
    return nonbondedMethod;
}

void GBSAOBCForce::setNonbondedMethod(NonbondedMethod method) {
    if (method < 0 || method > 2)
        throw OpenMMException("GBSAOBCForce: Illegal value for nonbonded method");
    nonbondedMethod = method;
}

double GBSAOBCForce::getCutoffDistance() const {
    return cutoffDistance;
}

void GBSAOBCForce::setCutoffDistance(double distance) {
    cutoffDistance = distance;
}

ForceImpl* GBSAOBCForce::createImpl() const {
    return new GBSAOBCForceImpl(*this);
}

void GBSAOBCForce::updateParametersInContext(Context& context) {
    dynamic_cast<GBSAOBCForceImpl&>(getImplInContext(context)).updateParametersInContext(getContextImpl(context));
}

int GBSAOBCForce::getNumParticles() const {
    return particles.size();
}
