BidomainMassMatrixAssembler.cpp

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*/
 
#include "BidomainMassMatrixAssembler.hpp"
#include "HeartRegionCodes.hpp"
 
template<unsigned DIM>
c_matrix<double,2*(DIM+1),2*(DIM+1)> BidomainMassMatrixAssembler<DIM>::ComputeMatrixTerm(
        c_vector<double, DIM+1> &rPhi,
        c_matrix<double, DIM, DIM+1> &rGradPhi,
        ChastePoint<DIM> &rX,
        c_vector<double,2> &rU,
        c_matrix<double,2,DIM> &rGradU /* not used */,
        Element<DIM,DIM>* pElement)
{
    c_matrix<double,2*(DIM+1),2*(DIM+1)> ret = zero_matrix<double>(2*(DIM+1), 2*(DIM+1));
 
    if (!HeartRegionCode::IsRegionBath( pElement->GetUnsignedAttribute() ))
    {
        c_matrix<double, DIM+1, DIM+1> basis_outer_prod = outer_prod(rPhi, rPhi);
 
        // even rows, even columns
        matrix_slice<c_matrix<double, 2*DIM+2, 2*DIM+2> >
        slice00(ret, slice (0, 2, DIM+1), slice (0, 2, DIM+1));
        slice00 =  basis_outer_prod;
 
        // odd rows, even columns: are zero
        // even rows, odd columns: are zero
        // odd rows, odd columns: are zero
    }
 
    return ret;
}
 
// Explicit instantiation
template class BidomainMassMatrixAssembler<1>;
template class BidomainMassMatrixAssembler<2>;
template class BidomainMassMatrixAssembler<3>;