PlanarPolarisedFarhadifarForce.cpp

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#include "PlanarPolarisedFarhadifarForce.hpp"
 
template<unsigned DIM>
PlanarPolarisedFarhadifarForce<DIM>::PlanarPolarisedFarhadifarForce()
   : FarhadifarForce<DIM>(),
     mPlanarPolarisedLineTensionMultiplier(2.0)
{
}
 
template<unsigned DIM>
PlanarPolarisedFarhadifarForce<DIM>::~PlanarPolarisedFarhadifarForce()
{
}
 
template<unsigned DIM>
double PlanarPolarisedFarhadifarForce<DIM>::GetPlanarPolarisedLineTensionMultiplier()
{
    return mPlanarPolarisedLineTensionMultiplier;
}
 
template<unsigned DIM>
void PlanarPolarisedFarhadifarForce<DIM>::SetPlanarPolarisedLineTensionMultiplier(double planarPolarisedLineTensionMultiplier)
{
    mPlanarPolarisedLineTensionMultiplier = planarPolarisedLineTensionMultiplier;
}
 
template<unsigned DIM>
double PlanarPolarisedFarhadifarForce<DIM>::GetLineTensionParameter(Node<DIM>* pNodeA, Node<DIM>* pNodeB, VertexBasedCellPopulation<DIM>& rVertexCellPopulation)
{
    // Find the indices of the elements owned by each node
    std::set<unsigned> elements_containing_nodeA = pNodeA->rGetContainingElementIndices();
    std::set<unsigned> elements_containing_nodeB = pNodeB->rGetContainingElementIndices();
 
    // Find common elements
    std::set<unsigned> shared_elements;
    std::set_intersection(elements_containing_nodeA.begin(),
                          elements_containing_nodeA.end(),
                          elements_containing_nodeB.begin(),
                          elements_containing_nodeB.end(),
                          std::inserter(shared_elements, shared_elements.begin()));
 
    // Check that the nodes have a common edge
    assert(!shared_elements.empty());
 
    // Since each internal edge is visited twice in the loop above, we have to use half the line tension parameter
    // for each visit.
    double line_tension_parameter_in_calculation = this->mLineTensionParameter/2.0;
 
    // If the edge corresponds to a single element, then the cell is on the boundary
    if (shared_elements.size() == 1)
    {
        line_tension_parameter_in_calculation = this->mBoundaryLineTensionParameter;
    }
 
    // Get the vector between the two vertices
    c_vector<double, 2> vector = pNodeB->rGetLocation() - pNodeA->rGetLocation();
    double theta = atan2(fabs(vector(1)), fabs(vector(0)));
 
    if ((theta > 0.25*M_PI) && (theta < 0.75*M_PI))
    {
        line_tension_parameter_in_calculation *= mPlanarPolarisedLineTensionMultiplier;
    }
 
    return line_tension_parameter_in_calculation;
}
 
template<unsigned DIM>
double PlanarPolarisedFarhadifarForce<DIM>::GetLineTensionParameter()
{
    return this->mLineTensionParameter;
}
 
template<unsigned DIM>
double PlanarPolarisedFarhadifarForce<DIM>::GetBoundaryLineTensionParameter()
{
    return this->mBoundaryLineTensionParameter;
}
 
 
template<unsigned DIM>
void PlanarPolarisedFarhadifarForce<DIM>::OutputForceParameters(out_stream& rParamsFile)
{
    *rParamsFile << "\t\t\t<PlanarPolarisedLineTensionMultiplier>" << mPlanarPolarisedLineTensionMultiplier << "</PlanarPolarisedLineTensionMultiplier>\n";
 
    // Call method on direct parent class
    FarhadifarForce<DIM>::OutputForceParameters(rParamsFile);
}
 
// Explicit instantiation
template class PlanarPolarisedFarhadifarForce<1>;
template class PlanarPolarisedFarhadifarForce<2>;
template class PlanarPolarisedFarhadifarForce<3>;
 
// Serialization for Boost >= 1.36
#include "SerializationExportWrapperForCpp.hpp"
EXPORT_TEMPLATE_CLASS_SAME_DIMS(PlanarPolarisedFarhadifarForce)