BidomainMassMatrixAssembler.cpp

00001 /*
00002 
00003 Copyright (C) University of Oxford, 2005-2011
00004 
00005 University of Oxford means the Chancellor, Masters and Scholars of the
00006 University of Oxford, having an administrative office at Wellington
00007 Square, Oxford OX1 2JD, UK.
00008 
00009 This file is part of Chaste.
00010 
00011 Chaste is free software: you can redistribute it and/or modify it
00012 under the terms of the GNU Lesser General Public License as published
00013 by the Free Software Foundation, either version 2.1 of the License, or
00014 (at your option) any later version.
00015 
00016 Chaste is distributed in the hope that it will be useful, but WITHOUT
00017 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00018 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
00019 License for more details. The offer of Chaste under the terms of the
00020 License is subject to the License being interpreted in accordance with
00021 English Law and subject to any action against the University of Oxford
00022 being under the jurisdiction of the English Courts.
00023 
00024 You should have received a copy of the GNU Lesser General Public License
00025 along with Chaste. If not, see <http://www.gnu.org/licenses/>.
00026 
00027 */
00028 
00029 
00030 
00031 #include "BidomainMassMatrixAssembler.hpp"
00032 #include "HeartRegionCodes.hpp"
00033 
00034 template<unsigned DIM>
00035 c_matrix<double,2*(DIM+1),2*(DIM+1)> BidomainMassMatrixAssembler<DIM>::ComputeMatrixTerm(
00036         c_vector<double, DIM+1> &rPhi,
00037         c_matrix<double, DIM, DIM+1> &rGradPhi,
00038         ChastePoint<DIM> &rX,
00039         c_vector<double,2> &rU,
00040         c_matrix<double,2,DIM> &rGradU /* not used */,
00041         Element<DIM,DIM>* pElement)
00042 {
00043     c_matrix<double,2*(DIM+1),2*(DIM+1)> ret = zero_matrix<double>(2*(DIM+1), 2*(DIM+1));
00044 
00045     if (!HeartRegionCode::IsRegionBath( pElement->GetRegion() ))
00046     {
00047         c_matrix<double, DIM+1, DIM+1> basis_outer_prod = outer_prod(rPhi, rPhi);
00048 
00049         // even rows, even columns
00050         matrix_slice<c_matrix<double, 2*DIM+2, 2*DIM+2> >
00051         slice00(ret, slice (0, 2, DIM+1), slice (0, 2, DIM+1));
00052         slice00 =  basis_outer_prod;
00053 
00054         // odd rows, even columns: are zero
00055         // even rows, odd columns: are zero
00056         // odd rows, odd columns: are zero
00057     }
00058 
00059     return ret;
00060 }
00061 
00062 
00063 
00065 // explicit instantiation
00067 
00068 template class BidomainMassMatrixAssembler<1>;
00069 template class BidomainMassMatrixAssembler<2>;
00070 template class BidomainMassMatrixAssembler<3>;