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Add factories hierarchy for matrices' and vectors' assembly
author Eugenio Gianniti <eugenio.gianniti@mail.polimi.it>
date Sat, 12 Jul 2014 12:30:13 +0200
parents 66071811eef8
children 5e9b5bbdc56b
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1 /*
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2 Copyright (C) 2013 Marco Vassallo <gedeone-octave@users.sourceforge.net>
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3
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4 This program is free software; you can redistribute it and/or modify it under
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5 the terms of the GNU General Public License as published by the Free Software
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6 Foundation; either version 3 of the License, or (at your option) any later
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7 version.
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8
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9 This program is distributed in the hope that it will be useful, but WITHOUT
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10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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12 details.
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13
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14 You should have received a copy of the GNU General Public License along with
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15 this program; if not, see <http://www.gnu.org/licenses/>.
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16 */
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17
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18 #include "form.h"
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19 #include "boundarycondition.h"
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20 #include "femfenics_factory.h"
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21
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22 DEFUN_DLD (assemble_system, args, nargout,
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23 "-*- texinfo -*-\n\
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24 @deftypefn {Function File} {[@var{A}], [@var{b}], [@var{x}(Optional)]} = \
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25 assemble_system (@var{form_a}, @var{form_L}, @var{DirichletBC})\n\
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26 Construct the discretization of a system and apply essential BC.\n\
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27 The input arguments are\n\
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28 @itemize @bullet\n\
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29 @item @var{form_a} which is the BilinearForm to assemble.\n\
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30 @item @var{form_L} which is the LinearForm to assemble.\n\
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31 @item @var{DirichletBC} represents the optional BC applied to \
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32 the system. \n\
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33 @end itemize \n\
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34 The output @var{A} is a matrix representing the @var{form_a} while \
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35 @var{b} represents @var{form_L}. \n\
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36 If boundary conditions have to be applied to a vector for a nonlinear problem \
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37 then it should be provide as 3rd argument and it will be given back \
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38 as the 3rd output argument. For an example of this situation, please refer \
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39 to the HyperElasticity example. \n\
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40 @seealso{BilinearForm, LinearForm, ResidualForm, JacobianForm, Functional}\n\
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41 @end deftypefn")
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42 {
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43 int nargin = args.length ();
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44 octave_value_list retval;
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45 if (! form_type_loaded)
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46 {
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47 form::register_type ();
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48 form_type_loaded = true;
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49 mlock ();
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50 }
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51
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52 if (! boundarycondition_type_loaded)
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53 {
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54 boundarycondition::register_type ();
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55 boundarycondition_type_loaded = true;
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56 mlock ();
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57 }
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59 if (nargout == 2)
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60 {
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61 if (nargin < 2)
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62 print_usage ();
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63 else
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64 {
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66 if (args(0).type_id () == form::static_type_id ()
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67 && args(1).type_id () == form::static_type_id ())
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68 {
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69 const form & frm1 =
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70 static_cast<const form&> (args(0).get_rep ());
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71 const form & frm2 =
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72 static_cast<const form&> (args(1).get_rep ());
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73
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74 if (! error_state)
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75 {
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76 const dolfin::Form & a = frm1.get_form ();
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77 const dolfin::Form & b = frm2.get_form ();
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78 a.check ();
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79 b.check ();
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80
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81 if (a.rank () == 2 && b.rank () == 1)
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82 {
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83 femfenics_factory factory;
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84
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85 dolfin::Matrix A;
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86 dolfin::assemble (A, a);
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87 dolfin::Vector B;
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88 dolfin::assemble (B, b);
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89
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90 for (std::size_t i = 2; i < nargin; ++i)
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91 {
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92 if (args(i).type_id () ==
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93 boundarycondition::static_type_id ())
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94 {
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95 const boundarycondition & bc
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96 = static_cast<const boundarycondition&>
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97 (args(i).get_rep ());
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98
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99 const std::vector<boost::shared_ptr
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100 <const dolfin::DirichletBC> >
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101 & pbc = bc.get_bc ();
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102
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103 for (std::size_t j = 0; j < pbc.size (); ++j)
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104 pbc[j]->apply(A, B);
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105 }
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106 else
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107 error ("assemble_system: unknown argument type");
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108 }
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109
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110 retval(0) = factory.matrix (A);
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111 retval(1) = factory.vector (B);
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112 }
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113 }
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114 else
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115 error ("assemble_system: unknown size");
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116 }
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117 }
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118 }
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119 else if (nargout == 3)
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120 {
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121 if (nargin < 3)
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122 print_usage ();
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123 else
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124 {
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125 if (args(0).type_id () == form::static_type_id ()
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126 && args(1).type_id () == form::static_type_id ())
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127 {
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128 const form & frm1 =
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129 static_cast<const form&> (args(0).get_rep ());
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130 const form & frm2 =
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131 static_cast<const form&> (args(1).get_rep ());
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132 const Array<double> myx = args(2).array_value ();
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133
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134 if (! error_state)
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135 {
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136 const dolfin::Form & a = frm1.get_form ();
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137 const dolfin::Form & b = frm2.get_form ();
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138 a.check ();
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139 b.check ();
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140
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141 if (a.rank () == 2 && b.rank () == 1)
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142 {
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143 femfenics_factory factory;
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144
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145 dolfin::Matrix A;
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146 dolfin::assemble (A, a);
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147 dolfin::Vector B;
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148 dolfin::assemble (B, b);
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149 dolfin::Vector x (myx.length ());
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150
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151 for (std::size_t i = 0; i < myx.length (); ++i)
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152 x.setitem (i, myx.xelem (i));
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153
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154 for (std::size_t i = 3; i < nargin; ++i)
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155 {
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156 if (args(i).type_id () ==
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157 boundarycondition::static_type_id ())
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158 {
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159 const boundarycondition & bc
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160 = static_cast<const boundarycondition&>
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161 (args(i).get_rep ());
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162
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163 const std::vector<boost::shared_ptr
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164 <const dolfin::DirichletBC> >
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165 & pbc = bc.get_bc ();
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166
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167 for (std::size_t j = 0;
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168 j < pbc.size (); ++j)
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169 pbc[j]->apply(A, B, x);
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170
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171 }
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172 else
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173 error ("assemble_system: unknown argument type");
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174 }
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175
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176 retval(0) = factory.matrix (A);
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177 retval(1) = factory.vector (B);
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178 retval(2) = factory.vector (x);
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179 }
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180 }
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181 else
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182 error ("assemble_system: unknown size");
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183 }
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184 }
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185 }
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186 return retval;
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187 }