dune-grid  2.3.1
albertareader.hh
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1 // -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2 // vi: set et ts=4 sw=2 sts=2:
3 #ifndef DUNE_ALBERTA_ALBERTAREADER_HH
4 #define DUNE_ALBERTA_ALBERTAREADER_HH
5 
8 
10 
12 
13 #if HAVE_ALBERTA
14 
15 namespace Dune
16 {
17 
18  template< class Grid >
20  {
22 
23  public:
25 
26  typedef typename Grid::ctype ctype;
27 
28  static const int dimension = Grid::dimension;
30 
31  private:
32  dune_static_assert( dimensionworld == Alberta::dimWorld,
33  "AlbertaReader: world dimension must match ALBERTA's world dimension." );
34 
36 
37  MacroData macroData_;
38 
39  AlbertaReader ( const This & );
40  This &operator= ( const This & );
41 
42  public:
44  {}
45 
46  template< GrapeIOFileFormatType type >
47  void readGrid ( const std::string &fileName, GridFactory &factory )
48  {
49  dune_static_assert( type != pgm, "AlbertaReader: reading pgm format is not supported." );
50 
51  // read ALBERTA macro triangulation
52  macroData_.read( fileName, (type == xdr) );
53 
54  // insert all vertices into the factory
55  const int numVertices = macroData_.vertexCount();
56  for( int i = 0; i < numVertices; ++i )
57  {
58  FieldVector< ctype, dimensionworld > v;
59  const Alberta::GlobalVector &coords = macroData_.vertex( i );
60  for( int j = 0; j < dimensionworld; ++j )
61  v[ j ] = coords[ j ];
62  factory.insertVertex( v );
63  }
64 
65  // insert all elements into the factory
66  std::vector< unsigned int > vertices( dimension+1 );
67  const int numElements = macroData_.elementCount();
68  for( int i = 0; i < numElements; ++i )
69  {
70  const typename MacroData::ElementId &id = macroData_.element( i );
71  for( int j = 0; j <= dimension; ++j )
72  vertices[ j ] = id[ j ];
73  typedef typename GenericGeometry::SimplexTopology< dimension >::type Topology;
74  factory.insertElement( GeometryType( Topology() ), vertices );
75  }
76 
77  // release ALBERTA macro data
78  macroData_.release();
79  }
80 
81  void readGrid ( const std::string &filename, GridFactory &factory )
82  {
83  readGrid< ascii >( filename, factory );
84  }
85  };
86 
87 }
88 
89 #endif // #if HAVE_ALBERTA
90 
91 #endif