VertexCryptBoundaryForce.cpp

/*

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*/

#include "VertexCryptBoundaryForce.hpp"
#include "MathsCustomFunctions.hpp"

template<unsigned DIM>
VertexCryptBoundaryForce<DIM>::VertexCryptBoundaryForce(double forceStrength)
   : AbstractForce<DIM>(),
     mForceStrength(forceStrength)
{
    // We don't want the force to act in the wrong direction
    assert(mForceStrength > 0.0);
}

template<unsigned DIM>
VertexCryptBoundaryForce<DIM>::~VertexCryptBoundaryForce()
{
}

template<unsigned DIM>
void VertexCryptBoundaryForce<DIM>::AddForceContribution(std::vector<c_vector<double, DIM> >& rForces,
                                                         AbstractCellPopulation<DIM>& rCellPopulation)
{
    // Helper variable that is a static cast of the cell population
    VertexBasedCellPopulation<DIM>* p_cell_population = static_cast<VertexBasedCellPopulation<DIM>*>(&rCellPopulation);

    // Throw an exception message if not using a VertexBasedCellPopulation
    if (dynamic_cast<VertexBasedCellPopulation<DIM>*>(&rCellPopulation) == NULL)
    {
        EXCEPTION("VertexCryptBoundaryForce is to be used with VertexBasedCellPopulations only");
    }

    // Iterate over nodes
    for (typename AbstractMesh<DIM,DIM>::NodeIterator node_iter = p_cell_population->rGetMesh().GetNodeIteratorBegin();
         node_iter != p_cell_population->rGetMesh().GetNodeIteratorEnd();
         ++node_iter)
    {
        double y = node_iter->rGetLocation()[1]; // y-coordinate of node

        // If the node lies below the line y=0, then add the boundary force contribution to rForces
        if (y < 0.0)
        {
            c_vector<double, DIM> boundary_force = zero_vector<double>(DIM);
            boundary_force[1] = mForceStrength*SmallPow(y, 2);

            rForces[node_iter->GetIndex()] += boundary_force;
        }
    }
}

template<unsigned DIM>
double VertexCryptBoundaryForce<DIM>::GetForceStrength() const
{
    return mForceStrength;
}

template<unsigned DIM>
void VertexCryptBoundaryForce<DIM>::OutputForceParameters(out_stream& rParamsFile)
{
    *rParamsFile << "\t\t\t<ForceStrength>" << mForceStrength << "</ForceStrength>\n";

    // Call method on direct parent class
    AbstractForce<DIM>::OutputForceParameters(rParamsFile);
}

// Explicit instantiation

template class VertexCryptBoundaryForce<1>;
template class VertexCryptBoundaryForce<2>;
template class VertexCryptBoundaryForce<3>;


// Serialization for Boost >= 1.36
#include "SerializationExportWrapperForCpp.hpp"
EXPORT_TEMPLATE_CLASS_SAME_DIMS(VertexCryptBoundaryForce)