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annotate src/MeshFunction.cc @ 268:61830a4f9ab9
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author | Eugenio Gianniti <eugenio.gianniti@mail.polimi.it> |
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date | Thu, 14 Aug 2014 12:26:55 +0200 |
parents | 53039ac90368 |
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rev | line source |
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1 /* |
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2 Copyright (C) 2014 Eugenio Gianniti <eugenio.gianniti@mail.polimi.it> |
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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 <dolfin.h> |
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19 #include "mesh.h" |
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20 #include "meshfunction.h" |
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21 #include "dolfin_compat.h" |
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22 |
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23 DEFUN_DLD (MeshFunction, args, nargout, "-*- texinfo -*-\n\ |
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24 @deftypefn {Function File} {[@var{meshfunc}]} = \ |
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25 MeshFunction (@var{Mesh}, @var{filename})\n\ |
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26 @deftypefnx {Function File} {[@var{meshfunc}]} = \ |
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27 MeshFunction (@var{type}, @var{Mesh}, @var{filename})\n\ |
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28 @deftypefnx {Function File} {[@var{meshfunc}]} = \ |
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29 MeshFunction (@var{type}, @var{Mesh}, @var{dim}, @var{value}) \n\ |
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30 Initialize a meshfunction with the values contained in a file.\n\ |
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31 The output @var{meshfunc} is an object which contains a representation of the \ |
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32 meshfunction in @var{filename} which can be used to mark subdomains or \ |
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33 facets where Dirichlet boundary conditions are to be applied.\n\ |
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34 Optionally, you can set a label identifying the @var{type} of markers, \ |
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35 in order to use @var{meshfunc} to mark subdomains in BilinearForm or \ |
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36 LinearForm. Three labels are recognized: ""dx"" for cell markers, \ |
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37 ""ds"" for exterior facets and ""dS"" for interior facets.\n\ |
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38 With the third invocation listed above it is possible to initialize \ |
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39 a meshfunction of topological dimension @var{dim} on @var{Mesh}, setting all \ |
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40 of its values to @var{value}, which is an integer.\n\ |
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41 @seealso{DirichletBC, save, BilinearForm, LinearForm, mark}\n\ |
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42 @end deftypefn") |
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43 { |
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44 |
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45 int nargin = args.length (); |
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46 octave_value retval; |
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47 |
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48 if (nargin < 2 || nargin > 4 || nargout > 1) |
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49 { print_usage (); } |
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50 else |
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51 { |
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52 if (! mesh_type_loaded) |
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53 { |
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54 mesh::register_type (); |
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55 mesh_type_loaded = true; |
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56 mlock (); |
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57 } |
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58 |
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59 if (! meshfunction_type_loaded) |
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60 { |
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61 meshfunction::register_type (); |
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62 meshfunction_type_loaded = true; |
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63 mlock (); |
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64 } |
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65 |
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66 octave_idx_type offset = 0; |
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67 std::string label; |
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68 |
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69 if (args(0).is_string ()) |
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70 { |
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71 label = args(0).string_value (); |
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72 offset = 1; |
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73 } |
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74 |
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75 if (args(0 + offset).type_id () == mesh::static_type_id ()) |
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76 { |
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77 mesh const & msh_arg = |
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78 static_cast<mesh const &> (args(0 + offset).get_rep ()); |
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79 |
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80 if (args(1 + offset).is_string ()) |
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81 { |
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82 std::string filename = args(1 + offset).string_value (); |
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83 if (!error_state) |
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84 { |
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85 SHARED_PTR <dolfin::Mesh const> const & |
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86 pmsh = msh_arg.get_pmsh (); |
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87 |
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88 try |
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89 { retval = new meshfunction (label, pmsh, filename); } |
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90 catch (std::runtime_error &) |
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91 { error ("error reading file"); } |
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92 } |
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93 } |
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94 else if (args(1 + offset).is_real_scalar () && |
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95 args(2 + offset).is_real_scalar ()) |
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96 { |
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97 std::size_t dim = args(1 + offset).ulong_value (); |
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98 std::size_t value = args(2 + offset).ulong_value (); |
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99 |
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100 if (!error_state) |
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101 { |
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102 SHARED_PTR <dolfin::Mesh const> const & |
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103 pmsh = msh_arg.get_pmsh (); |
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104 |
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105 retval = new meshfunction (label, pmsh, dim, value); |
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106 } |
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107 } |
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108 else |
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109 { error ("invalid input arguments"); } |
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110 } |
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111 else |
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112 { error ("invalid input arguments"); } |
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113 } |
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114 |
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115 return retval; |
598c5e9e0a9e
Add utilities for meshfunction
Eugenio Gianniti <eugenio.gianniti@mail.polimi.it>
parents:
diff
changeset
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116 } |