libMesh
mesh_smoother_laplace.h
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1 // The libMesh Finite Element Library.
2 // Copyright (C) 2002-2017 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 // C++ Includes
24 #include <vector>
25 
26 // Local Includes
27 #include "libmesh/libmesh.h"
28 #include "libmesh/mesh_smoother.h"
29 
30 namespace libMesh
31 {
32 
45 {
46 public:
51  explicit
53 
57  virtual ~LaplaceMeshSmoother() {}
58 
65  virtual void smooth() libmesh_override { this->smooth(1); }
66 
72  void smooth(unsigned int n_iterations);
73 
81  void init();
82 
87  void print_graph(std::ostream & out = libMesh::out) const;
88 
89 private:
94  void allgather_graph();
95 
100 
104  std::vector<std::vector<dof_id_type>> _graph;
105 };
106 
107 
108 } // namespace libMesh
109 
110 #endif // LIBMESH_MESH_SMOOTHER_LAPLACE_H
std::vector< std::vector< dof_id_type > > _graph
Data structure for holding the L-graph.
bool _initialized
True if the L-graph has been created, false otherwise.
MeshBase & mesh
void init()
Initialization for the Laplace smoothing routine is basically identical to building an "L-graph" whic...
The libMesh namespace provides an interface to certain functionality in the library.
virtual ~LaplaceMeshSmoother()
Destructor.
This class defines the data structures necessary for Laplace smoothing.
The UnstructuredMesh class is derived from the MeshBase class.
LaplaceMeshSmoother(UnstructuredMesh &mesh)
Constructor.
void allgather_graph()
This function allgather&#39;s the (local) graph after it is computed on each processor by the init() func...
OStreamProxy out
void print_graph(std::ostream &out=libMesh::out) const
Mainly for debugging, this function will print out the connectivity graph which has been created...
This class provides the necessary interface for mesh smoothing.
Definition: mesh_smoother.h:38
virtual void smooth() libmesh_override
Redefinition of the smooth function from the base class.