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1 : : /* *****************************************************************
2 : : MESQUITE -- The Mesh Quality Improvement Toolkit
3 : :
4 : : Copyright 2007 Sandia National Laboratories. Developed at the
5 : : University of Wisconsin--Madison under SNL contract number
6 : : 624796. The U.S. Government and the University of Wisconsin
7 : : retain certain rights to this software.
8 : :
9 : : This library is free software; you can redistribute it and/or
10 : : modify it under the terms of the GNU Lesser General Public
11 : : License as published by the Free Software Foundation; either
12 : : version 2.1 of the License, or (at your option) any later version.
13 : :
14 : : This library is distributed in the hope that it will be useful,
15 : : but WITHOUT ANY WARRANTY; without even the implied warranty of
16 : : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 : : Lesser General Public License for more details.
18 : :
19 : : You should have received a copy of the GNU Lesser General Public License
20 : : (lgpl.txt) along with this library; if not, write to the Free Software
21 : : Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 : :
23 : : (2009) [email protected]
24 : :
25 : : ***************************************************************** */
26 : :
27 : : /** \file SlaveBoundaryVertices.hpp
28 : : * \brief
29 : : * \author Jason Kraftcheck
30 : : */
31 : :
32 : : #ifndef MSQ_SLAVE_BOUNDARY_VERTICES_HPP
33 : : #define MSQ_SLAVE_BOUNDARY_VERTICES_HPP
34 : :
35 : : #include "Mesquite.hpp"
36 : : #include "VertexSlaver.hpp"
37 : :
38 : : namespace MBMesquite
39 : : {
40 : :
41 : : /**\brief Utility to set slaved vs. non-slaved vertices.
42 : : *
43 : : * This class can be inserted in the instruction queue before any
44 : : * optimization to determine which higher-order nodes are slaved
45 : : * as a function of their distance from the bounary of the mesh.
46 : : *
47 : : * This implementation assumes that the boundary of the mesh can
48 : : * be identified either by dimension of the associated geometric
49 : : * domain or by fixed vertices.
50 : : */
51 [ - + ]: 2 : class MESQUITE_EXPORT SlaveBoundaryVertices : public VertexSlaver
52 : : {
53 : : public:
54 : : /**\brief Define defintion of boundary as either the distance
55 : : * from a fixed vertex or the distance from the domain
56 : : * of the boundary vertices.
57 : : *
58 : : * If the second parameter is not specified, the boundary will
59 : : * be assumed to be indicated by fixed vertices. If it is specified,
60 : : * the boundary will be assumed to be those vertices constrained to
61 : : * a domain less than or equal to the specified dimension (I.e.
62 : : * vertices constrained such that the number of degrees of freedom
63 : : * in their motion is less than or equal to the specified number.)
64 : : *
65 : : *\param depth The number of elements inwards from the boundary for
66 : : * which all contained higher-order nodes will be free
67 : : * variables in the optimization. Any vertex for further
68 : : * from the boundary will be slaved. Specifying zero
69 : : * will result in all higher-order nodes being slaved
70 : : * except free nodes on the boundary.
71 : : *\param max_boundary_domain_dimension Specify the definition
72 : : * of "boundary". If greater than or equal to 4, then
73 : : * the the set of all fixed vertices is assumed to be
74 : : * the boundary. If less than four, then all vertices
75 : : * constrained to a domain with the specified number of
76 : : * fewer degrees of freedom (constrained to a geometric
77 : : * entity with an equal or smaller topological dimension)
78 : : * will be considered to be the boundary.
79 : : */
80 : : SlaveBoundaryVertices( unsigned depth, unsigned max_boundary_domain_dimension = 4 );
81 : :
82 : : virtual double loop_over_mesh( MeshDomainAssoc* mesh_and_domain, const Settings* settings, MsqError& err );
83 : :
84 : : virtual std::string get_name() const;
85 : :
86 : : virtual void initialize_queue( MeshDomainAssoc* mesh_and_domain, const Settings* settings, MsqError& err );
87 : :
88 : : unsigned get_num_boundary_layers() const
89 : : {
90 : : return elemDepth;
91 : : }
92 : : bool boundary_is_fixed_vertices() const
93 : : {
94 : : return domainDoF >= 4;
95 : : }
96 : : bool boundary_is_mesh_domain() const
97 : : {
98 : : return domainDoF < 4;
99 : : }
100 : : unsigned boundary_mesh_domain_dimension() const
101 : : {
102 : : return domainDoF;
103 : : }
104 : :
105 : : private:
106 : : unsigned elemDepth;
107 : : unsigned domainDoF;
108 : : };
109 : :
110 : : } // namespace MBMesquite
111 : :
112 : : #endif
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