mesh_smoother_laplace.h
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1 // The libMesh Finite Element Library.
2 // Copyright (C) 2002-2014 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
3 
4 // This library is free software; you can redistribute it and/or
5 // modify it under the terms of the GNU Lesser General Public
6 // License as published by the Free Software Foundation; either
7 // version 2.1 of the License, or (at your option) any later version.
8 
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 // Lesser General Public License for more details.
13 
14 // You should have received a copy of the GNU Lesser General Public
15 // License along with this library; if not, write to the Free Software
16 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 
18 
19 
20 #ifndef LIBMESH_MESH_SMOOTHER_LAPLACE_H
21 #define LIBMESH_MESH_SMOOTHER_LAPLACE_H
22 
23 
24 // forward declarations
25 
26 // C++ Includes -----------------------------------
27 #include <vector>
28 
29 // Local Includes -----------------------------------
30 #include "libmesh/libmesh.h" // libMesh::out/err
31 #include "libmesh/mesh_smoother.h"
32 
33 namespace libMesh
34 {
35 
36 
50 // ------------------------------------------------------------
51 // LaplaceMeshSmoother class definition
53 {
54 public:
59  explicit
61 
65  virtual ~LaplaceMeshSmoother() {}
66 
73  virtual void smooth() { this->smooth(1); }
74 
80  void smooth(unsigned int n_iterations);
81 
89  void init();
90 
95  void print_graph(std::ostream& out = libMesh::out) const;
96 
97 private:
102  void allgather_graph();
103 
108 
112  std::vector<std::vector<dof_id_type> > _graph;
113 };
114 
115 
116 } // namespace libMesh
117 
118 #endif // LIBMESH_MESH_SMOOTHER_LAPLACE_H

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