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EpetraExt_TCrsGraph_MapColoringIndex.h
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41 
42 #ifndef EpetraExt_TCRSGRAPH_MAPCOLORINGINDEX_H
43 #define EpetraExt_TCRSGRAPH_MAPCOLORINGINDEX_H
44 
45 #include <EpetraExt_Transform.h>
46 #include <Epetra_GIDTypeVector.h>
47 #include <Epetra_MapColoring.h>
48 
49 #include <vector>
50 #include <map>
51 
52 class Epetra_CrsGraph;
53 class Epetra_IntVector;
54 
55 namespace EpetraExt {
56 
58 
62 template<typename int_type>
64 : public StructuralTransform< Epetra_CrsGraph,std::vector<typename Epetra_GIDTypeVector<int_type>::impl> > {
65 
67 
68  protected:
69 
71 
74 
76 
80  : ColorMap_( ColorMap )
81  {}
82 public:
85 
87  typedef typename Base::NewTypeRef NewTypeRef;
90 };
91 
93 
94 template<typename int_type>
98 {
99  if(!orig.RowMap(). template GlobalIndicesIsType<int_type>())
100  throw "EpetraExt::TCrsGraph_MapColoringIndex::operator(): Global indices mismatch.";
101 
102  Base::origObj_ = &orig;
103 
104  const Epetra_BlockMap & RowMap = orig.RowMap();
105  int nRows = RowMap.NumMyElements();
106 
107  int NumColors = ColorMap_.NumColors();
108  int * ListOfColors = ColorMap_.ListOfColors();
109 
110  std::map<int,int> MapOfColors;
111  for( int i = 0; i < NumColors; ++i ) MapOfColors[ ListOfColors[i] ] = i;
112 
113  //initial setup of stl vector of IntVectors for indexing
114  std::vector<int_type> dummy( nRows, -1 );
115  typename Base::NewTypePtr IndexVec = new typename Base::NewType( NumColors, typename Epetra_GIDTypeVector<int_type>::impl( Copy, RowMap, &dummy[0] ) );
116 
117  int MaxNumIndices = orig.MaxNumIndices();
118  int NumIndices;
119  std::vector<int_type> Indices( MaxNumIndices );
120 
121  for( int i = 0; i < nRows; ++i )
122  {
123  orig.ExtractGlobalRowCopy( (int_type) orig.GRID64(i), MaxNumIndices, NumIndices, &Indices[0] );
124 
125  for( int j = 0; j < NumIndices; ++j )
126  (*IndexVec)[ MapOfColors[ColorMap_(Indices[j])] ][i] = Indices[j];
127  }
128 
129  Base::newObj_ = IndexVec;
130 
131  return *IndexVec;
132 }
133 
134 } //namespace EpetraExt
135 
136 #endif // EpetraExt_TCRSGRAPH_MAPCOLORINGINDEX_H
StructuralTransform< Epetra_CrsGraph, std::vector< typename Epetra_GIDTypeVector< int_type >::impl > > Base
Transform< T, T >::NewTypeRef Transform_Composite< T >typename Transform< T, T >::OriginalTypeRef orig this origObj_
Base::NewTypeRef NewTypeRef
Generates a std::vector&lt;Epetra_IntVector&gt; from the input Epetra_CrsGraph.
int NumMyElements() const
Generates a std::vector of Epetra_IntVector&#39;s to be used to map perturbation contributions to a CrsGr...
NewTypeRef operator()(OriginalTypeRef orig)
Analysis of transform operation on original object and construction of new object.
TCrsGraph_MapColoringIndex(const Epetra_MapColoring &ColorMap)
Constructor input param ColorMap defines the perturbation coloring.