Panzer_UniqueGlobalIndexer_EpetraUtilities.cpp

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//           Panzer: A partial differential equation assembly
//       engine for strongly coupled complex multiphysics systems
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#include "PanzerDofMgr_config.hpp"
 
#include "Panzer_UniqueGlobalIndexer_EpetraUtilities.hpp"
#include "Panzer_UniqueGlobalIndexer_EpetraUtilities_impl.hpp"
 
namespace panzer {
 
  // template
  // class ArrayToFieldVectorEpetra;
 
  // /** Construct a map that only uses a certain field.
//  */
Teuchos::RCP<const Epetra_BlockMap>
getFieldMapEpetra(int fieldNum,const Epetra_IntVector & fieldTVector)
{
   Teuchos::RCP<const Epetra_BlockMap> origMap = Teuchos::rcpFromRef(fieldTVector.Map());
   std::vector<int> fieldVector(fieldTVector.MyLength());
   Teuchos::ArrayView<int> av = Teuchos::arrayViewFromVector(fieldVector);
   fieldTVector.ExtractCopy(av.getRawPtr());
 
   std::vector<int> mapVector;
   for(std::size_t i=0;i<fieldVector.size();i++) {
      if(fieldVector[i]==fieldNum)
         mapVector.push_back(origMap->GID(i));
   }
 
   Teuchos::RCP<Epetra_BlockMap> finalMap
     = Teuchos::rcp(new Epetra_BlockMap(-1, static_cast<int>(mapVector.size()), Teuchos::arrayViewFromVector(mapVector).getRawPtr(), 1, Teuchos::OrdinalTraits<int>::zero(), origMap->Comm()));
 
   return finalMap;
}
 
 
} // end panzer