Chaste Release::3.1
BidomainMassMatrixAssembler.cpp
00001 /*
00002 
00003 Copyright (c) 2005-2012, University of Oxford.
00004 All rights reserved.
00005 
00006 University of Oxford means the Chancellor, Masters and Scholars of the
00007 University of Oxford, having an administrative office at Wellington
00008 Square, Oxford OX1 2JD, UK.
00009 
00010 This file is part of Chaste.
00011 
00012 Redistribution and use in source and binary forms, with or without
00013 modification, are permitted provided that the following conditions are met:
00014  * Redistributions of source code must retain the above copyright notice,
00015    this list of conditions and the following disclaimer.
00016  * Redistributions in binary form must reproduce the above copyright notice,
00017    this list of conditions and the following disclaimer in the documentation
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00021    software without specific prior written permission.
00022 
00023 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00024 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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00026 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
00027 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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00030 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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00033 
00034 */
00035 
00036 
00037 
00038 #include "BidomainMassMatrixAssembler.hpp"
00039 #include "HeartRegionCodes.hpp"
00040 
00041 template<unsigned DIM>
00042 c_matrix<double,2*(DIM+1),2*(DIM+1)> BidomainMassMatrixAssembler<DIM>::ComputeMatrixTerm(
00043         c_vector<double, DIM+1> &rPhi,
00044         c_matrix<double, DIM, DIM+1> &rGradPhi,
00045         ChastePoint<DIM> &rX,
00046         c_vector<double,2> &rU,
00047         c_matrix<double,2,DIM> &rGradU /* not used */,
00048         Element<DIM,DIM>* pElement)
00049 {
00050     c_matrix<double,2*(DIM+1),2*(DIM+1)> ret = zero_matrix<double>(2*(DIM+1), 2*(DIM+1));
00051 
00052     if (!HeartRegionCode::IsRegionBath( pElement->GetUnsignedAttribute() ))
00053     {
00054         c_matrix<double, DIM+1, DIM+1> basis_outer_prod = outer_prod(rPhi, rPhi);
00055 
00056         // even rows, even columns
00057         matrix_slice<c_matrix<double, 2*DIM+2, 2*DIM+2> >
00058         slice00(ret, slice (0, 2, DIM+1), slice (0, 2, DIM+1));
00059         slice00 =  basis_outer_prod;
00060 
00061         // odd rows, even columns: are zero
00062         // even rows, odd columns: are zero
00063         // odd rows, odd columns: are zero
00064     }
00065 
00066     return ret;
00067 }
00068 
00069 
00070 
00072 // explicit instantiation
00074 
00075 template class BidomainMassMatrixAssembler<1>;
00076 template class BidomainMassMatrixAssembler<2>;
00077 template class BidomainMassMatrixAssembler<3>;