PopulationTestingForce.cpp

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*/

#include "PopulationTestingForce.hpp"

template<unsigned  ELEMENT_DIM, unsigned SPACE_DIM>
PopulationTestingForce<ELEMENT_DIM, SPACE_DIM>::PopulationTestingForce(bool hasPositionDependence)
    :AbstractForce<ELEMENT_DIM, SPACE_DIM>(),
     mWithPositionDependence(hasPositionDependence)
{
}

template<unsigned  ELEMENT_DIM, unsigned SPACE_DIM>
void PopulationTestingForce<ELEMENT_DIM, SPACE_DIM>::AddForceContribution(AbstractCellPopulation<ELEMENT_DIM,SPACE_DIM>& rCellPopulation)
{
    for (unsigned i=0; i<rCellPopulation.GetNumNodes(); i++)
    {
        c_vector<double, SPACE_DIM> force;

        for (unsigned j=0; j<SPACE_DIM; j++)
        {
            if (mWithPositionDependence)
            {
              force[j] = (j+1)*i*0.01*rCellPopulation.GetNode(i)->rGetLocation()[j];
            }
            else
            {
                force[j] = (j+1)*i*0.01;
            }
        }
        rCellPopulation.GetNode(i)->ClearAppliedForce();
        rCellPopulation.GetNode(i)->AddAppliedForceContribution(force);
    }
}

template<unsigned  ELEMENT_DIM, unsigned SPACE_DIM>
c_vector<double, SPACE_DIM> PopulationTestingForce<ELEMENT_DIM, SPACE_DIM>::GetExpectedOneStepLocationFE(unsigned nodeIndex,
                                                                                       double damping,
                                                                                       c_vector<double, SPACE_DIM>& oldLocation,
                                                                                       double dt)
{
    c_vector<double, SPACE_DIM> result;
    for (unsigned j = 0; j < SPACE_DIM; j++)
    {
        if (mWithPositionDependence)
        {
            result[j] = oldLocation[j] + dt * (j+1)*0.01*nodeIndex * oldLocation[j] / damping;
        }
        else
        {
            result[j] = oldLocation[j] + dt * (j+1)*0.01*nodeIndex/damping;
        }
    }
    return result;
}

template<unsigned  ELEMENT_DIM, unsigned SPACE_DIM>
c_vector<double, SPACE_DIM> PopulationTestingForce<ELEMENT_DIM, SPACE_DIM>::GetExpectedOneStepLocationRK4(unsigned nodeIndex,
                                                                                      double damping,
                                                                                      c_vector<double, SPACE_DIM>& oldLocation,
                                                                                      double dt)
{
    c_vector<double, SPACE_DIM> result;
    for (unsigned j = 0; j < SPACE_DIM; j++)
    {
        double k1 = (j+1)*0.01*nodeIndex * oldLocation[j] / damping;
        double k2 = (j+1)*0.01*nodeIndex * (oldLocation[j] + (dt/2.0)*k1) / damping;
        double k3 = (j+1)*0.01*nodeIndex * (oldLocation[j] + (dt/2.0)*k2) / damping;
        double k4 = (j+1)*0.01*nodeIndex * (oldLocation[j] + dt*k3) / damping;
        result[j] = oldLocation[j] + (1.0/6.0)*dt*(k1 + 2*k2 + 2*k3 + k4);
    }
    return result;
}

template<unsigned  ELEMENT_DIM, unsigned SPACE_DIM>
c_vector<double, SPACE_DIM> PopulationTestingForce<ELEMENT_DIM, SPACE_DIM>::GetExpectedOneStepLocationAM2(unsigned nodeIndex,
                                                                                    double damping,
                                                                                    c_vector<double, SPACE_DIM>& oldLocation,
                                                                                    double dt)
{
    c_vector<double, SPACE_DIM> result;
    for (unsigned j = 0; j < SPACE_DIM; j++)
    {
        result[j] = oldLocation[j] * (1 + 0.5*dt*0.01*(j+1)*nodeIndex / damping) / (1 - 0.5*dt*0.01*(j+1)*nodeIndex / damping);
    }
    return result;
}

template<unsigned  ELEMENT_DIM, unsigned SPACE_DIM>
c_vector<double, SPACE_DIM> PopulationTestingForce<ELEMENT_DIM, SPACE_DIM>::GetExpectedOneStepLocationBE(unsigned nodeIndex,
                                                                                      double damping,
                                                                                      c_vector<double, SPACE_DIM>& oldLocation,
                                                                                      double dt)
{
    c_vector<double, SPACE_DIM> result;
    for (unsigned j = 0; j < SPACE_DIM; j++)
    {
        result[j] = oldLocation[j] / (1 - dt*0.01*(j+1)*nodeIndex/damping);
    }
    return result;
}

template<unsigned  ELEMENT_DIM, unsigned SPACE_DIM>
void PopulationTestingForce<ELEMENT_DIM, SPACE_DIM>::OutputForceParameters(out_stream& rParamsFile)
{
    // This force is not used in a simulation so this method is never called
    NEVER_REACHED;
}

// Explicit instantiation
template class PopulationTestingForce<1,1>;
template class PopulationTestingForce<1,2>;
template class PopulationTestingForce<2,2>;
template class PopulationTestingForce<1,3>;
template class PopulationTestingForce<2,3>;
template class PopulationTestingForce<3,3>;

// Serialization for Boost >= 1.36
#include "SerializationExportWrapperForCpp.hpp"
EXPORT_TEMPLATE_CLASS_ALL_DIMS(PopulationTestingForce)