ForwardEulerNumericalMethod.cpp

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*/

#include "ForwardEulerNumericalMethod.hpp"

template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
ForwardEulerNumericalMethod<ELEMENT_DIM,SPACE_DIM>::ForwardEulerNumericalMethod()
    : AbstractNumericalMethod<ELEMENT_DIM,SPACE_DIM>()
{
}

template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
ForwardEulerNumericalMethod<ELEMENT_DIM,SPACE_DIM>::~ForwardEulerNumericalMethod()
{
}

template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
void ForwardEulerNumericalMethod<ELEMENT_DIM,SPACE_DIM>::UpdateAllNodePositions(double dt)
{
    if (!this->mUseUpdateNodeLocation)
    {
        // Apply forces to each cell, and save a vector of net forces F
        std::vector<c_vector<double, SPACE_DIM> > forces = this->ComputeForcesIncludingDamping();

        unsigned index = 0;
        for (typename AbstractMesh<ELEMENT_DIM, SPACE_DIM>::NodeIterator node_iter = this->mpCellPopulation->rGetMesh().GetNodeIteratorBegin();
             node_iter != this->mpCellPopulation->rGetMesh().GetNodeIteratorEnd();
             ++node_iter, ++index)
        {
            // Get the current node location and calculate the new location according to the forward Euler method
            const c_vector<double, SPACE_DIM>& r_old_location = node_iter->rGetLocation();
            c_vector<double, SPACE_DIM> displacement = dt * forces[index];

            // In the vertex-based case, the displacement may be scaled if the cell rearrangement threshold is exceeded
            this->DetectStepSizeExceptions(node_iter->GetIndex(), displacement, dt);

            c_vector<double, SPACE_DIM> new_location = r_old_location + displacement;
            this->SafeNodePositionUpdate(node_iter->GetIndex(), new_location);
        }
    }
    else
    {
        /*
         * If this type of cell population does not support the new numerical methods, delegate
         * updating node positions to the population itself.
         *
         * This only applies to NodeBasedCellPopulationWithBuskeUpdates.
         */
        this->mpCellPopulation->UpdateNodeLocations(dt);
    }
}

template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
void ForwardEulerNumericalMethod<ELEMENT_DIM, SPACE_DIM>::OutputNumericalMethodParameters(out_stream& rParamsFile)
{
    // No new parameters to output, so just call method on direct parent class
    AbstractNumericalMethod<ELEMENT_DIM,SPACE_DIM>::OutputNumericalMethodParameters(rParamsFile);
}

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

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