laplace_bem_2d_full.mex.cpp

#include "util/mex_matrix.hpp"
#include "core/weighted_residual.hpp"
#include "library/laplace_2d.hpp"
 
typedef NiHu::mex::real_matrix<double> dMatrix;
 
void mexFunction(int nlhs, mxArray *lhs[], int nrhs, mxArray const *rhs[])
{
    dMatrix surf_nodes(rhs[0]), surf_elem(rhs[1]), field_nodes(rhs[2]), field_elem(rhs[3]);
    auto surf_mesh = NiHu::create_mesh(surf_nodes, surf_elem, NiHu::line_1_tag());
    auto field_mesh = NiHu::create_mesh(field_nodes, field_elem, NiHu::line_1_tag());
    auto const &surf_sp = NiHu::constant_view(surf_mesh);
    auto const &field_sp = NiHu::constant_view(field_mesh);
    size_t n = surf_sp.get_num_dofs();
    dMatrix L_surf(n, n, lhs[0]);
    dMatrix M_surf(n, n, lhs[1]);
    dMatrix W_surf(n, n, lhs[2]);
    size_t m = field_sp.get_num_dofs();
    dMatrix L_field(m, n, lhs[3]);
    dMatrix M_field(m, n, lhs[4]);
    auto L = NiHu::create_integral_operator(NiHu::laplace_2d_SLP_kernel());
    auto M = NiHu::create_integral_operator(NiHu::laplace_2d_DLP_kernel());
    auto W = NiHu::create_integral_operator(NiHu::laplace_2d_HSP_kernel());
    L_surf << dirac(surf_sp) * L[surf_sp];
    M_surf << dirac(surf_sp) * M[surf_sp];
    W_surf << dirac(surf_sp) * W[surf_sp];
    L_field << dirac(field_sp) * L[surf_sp];
    M_field << dirac(field_sp) * M[surf_sp];
}