Panzer_DOF_PointField_impl.hpp

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//           Panzer: A partial differential equation assembly
//       engine for strongly coupled complex multiphysics systems
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#ifndef PANZER_DOF_POINT_FIELD_DECL_HPP
#define PANZER_DOF_POINT_FIELD_DECL_HPP
 
#include "Panzer_IntegrationRule.hpp"
#include "Panzer_Workset_Utilities.hpp"
 
#include "Intrepid2_FunctionSpaceTools.hpp"
 
#include "Phalanx_DataLayout_MDALayout.hpp"
 
namespace panzer {
 
//**********************************************************************
template <typename EvalT, typename TRAITST>
void DOF_PointField<EvalT,TRAITST>::initialize(const std::string & fieldName,
                                                const PureBasis & fieldBasis,
                                                const std::string & coordinateName,
                                                const Teuchos::RCP<PHX::DataLayout> & coordLayout,
                                                const Teuchos::RCP<PHX::DataLayout> & quadLayout,
                                                const std::string & postfixFieldName)
{
  intrepidBasis = fieldBasis.getIntrepid2Basis();
 
  int cellCount = fieldBasis.functional->extent(0);
  int coeffCount = fieldBasis.functional->extent(1);
  int pointCount = coordLayout->extent(0);
  int dimCount = coordLayout->extent(1);
 
  Teuchos::RCP<PHX::DataLayout> basisLayout = fieldBasis.functional;
 
  coordinates = PHX::MDField<const ScalarT,Point,Dim>(coordinateName,coordLayout);
  dof_coeff = PHX::MDField<const ScalarT>(fieldName,basisLayout);
  dof_field = PHX::MDField<ScalarT>(fieldName+postfixFieldName,quadLayout);
 
  this->addDependentField(coordinates);
  this->addDependentField(dof_coeff);
  this->addEvaluatedField(dof_field);
 
  // build data storage for temporary conversion
  basisRef    = Kokkos::DynRankView<double,PHX::Device>("basisRef",coeffCount,pointCount);
  basis       = Kokkos::DynRankView<double,PHX::Device>("basis",cellCount,coeffCount,pointCount);
  intrpCoords = Kokkos::DynRankView<double,PHX::Device>("intrpCoords",pointCount,dimCount);
  
  std::string n = "DOF_PointField: " + dof_field.fieldTag().name();
  this->setName(n);
}
 
//**********************************************************************
template <typename EvalT, typename TRAITST>
void DOF_PointField<EvalT,TRAITST>::evaluateFields(typename TRAITST::EvalData workset)
{ 
  // Zero out arrays (intrepid does a sum! 1/17/2012)
  dof_field.deep_copy(ScalarT(0.0));
 
  // copy coordinates
  auto l_intrpCoords = PHX::as_view(intrpCoords);
  auto l_coordinates = coordinates.get_static_view();
  Kokkos::parallel_for("DOF PointFields", l_coordinates.extent_int(0), KOKKOS_LAMBDA (int i) {
     for (int j = 0; j < l_coordinates.extent_int(1); ++j)
      l_intrpCoords(i,j) = Sacado::scalarValue(l_coordinates(i,j));
    });
 
  if(workset.num_cells>0) {
    // evaluate at reference points
    intrepidBasis->getValues(basisRef, intrpCoords, Intrepid2::OPERATOR_VALUE);
 
    // transfer reference basis values to physical frame values
    Intrepid2::FunctionSpaceTools<PHX::exec_space>::
      HGRADtransformVALUE(basis,basisRef);
 
    // evaluate function at specified points
    Intrepid2::FunctionSpaceTools<PHX::exec_space>::
      evaluate(dof_field.get_view(),dof_coeff.get_view(),basis);
  }
  Kokkos::fence();
}
 
//**********************************************************************
 
}
 
#endif