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Panzer_GatherNormals_impl.hpp
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42 
43 #ifndef PANZER_GATHER_NORMALS_IMPL_HPP
44 #define PANZER_GATHER_NORMALS_IMPL_HPP
45 
46 #include "Teuchos_Assert.hpp"
47 #include "Phalanx_DataLayout.hpp"
48 
49 #include "Panzer_PureBasis.hpp"
50 #include "Kokkos_ViewFactory.hpp"
51 
52 #include "Intrepid2_Kernels.hpp"
53 #include "Intrepid2_OrientationTools.hpp"
54 
55 #include "Teuchos_FancyOStream.hpp"
56 
57 template<typename EvalT,typename Traits>
60  const Teuchos::ParameterList& p)
61 {
62  dof_name = (p.get< std::string >("DOF Name"));
63 
64  if(p.isType< Teuchos::RCP<PureBasis> >("Basis"))
65  basis = p.get< Teuchos::RCP<PureBasis> >("Basis");
66  else
67  basis = p.get< Teuchos::RCP<const PureBasis> >("Basis");
68 
69  pointRule = p.get<Teuchos::RCP<const PointRule> >("Point Rule");
70 
71  Teuchos::RCP<PHX::DataLayout> basis_layout = basis->functional;
72  Teuchos::RCP<PHX::DataLayout> vector_layout_vector = basis->functional_grad;
73 
74  // some sanity checks
75  TEUCHOS_ASSERT(basis->isVectorBasis());
76 
77  // setup the orientation field
78  std::string orientationFieldName = basis->name() + " Orientation";
79  // setup all fields to be evaluated and constructed
80  pointValues = panzer::PointValues2<double> (pointRule->getName()+"_",false);
81  pointValues.setupArrays(pointRule);
82 
83  // the field manager will allocate all of these field
84  constJac_ = pointValues.jac;
85  this->addDependentField(constJac_);
86 
87  gatherFieldNormals = PHX::MDField<ScalarT,Cell,NODE,Dim>(dof_name+"_Normals",vector_layout_vector);
88  this->addEvaluatedField(gatherFieldNormals);
89 
90  this->setName("Gather Normals");
91 }
92 
93 // **********************************************************************
94 template<typename EvalT,typename Traits>
98 {
99  orientations = d.orientations_;
100  this->utils.setFieldData(pointValues.jac,fm);
101  faceNormal = Kokkos::createDynRankView(gatherFieldNormals.get_static_view(),
102  "faceNormal",
103  gatherFieldNormals.extent(0),
104  gatherFieldNormals.extent(1),
105  gatherFieldNormals.extent(2));
106 
107  const shards::CellTopology & parentCell = *basis->getCellTopology();
108  int sideDim = parentCell.getDimension()-1;
109  sideParam = Intrepid2::RefSubcellParametrization<PHX::Device>::get(sideDim, parentCell.getKey());
110 }
111 
112 // **********************************************************************
113 template<typename EvalT,typename Traits>
116 {
117 
118  if(workset.num_cells<=0)
119  return;
120 
121  const shards::CellTopology & parentCell = *basis->getCellTopology();
122  int cellDim = parentCell.getDimension();
123  int sideDim = parentCell.getDimension()-1;
124  int numFaces = gatherFieldNormals.extent(1);
125 
126  // allocate space that is sized correctly for AD
127  auto refEdges = Kokkos::createDynRankView(gatherFieldNormals.get_static_view(),"ref_edges", sideDim, cellDim);
128  auto phyEdges = Kokkos::createDynRankView(gatherFieldNormals.get_static_view(),"phy_edges", sideDim, cellDim);
129 
130  const WorksetDetails & details = workset;
131  const auto worksetJacobians = pointValues.jac.get_view();
132 
133  // Loop over workset faces and edge points
134  //TODO parallel_for
135  for(index_t c=0;c<workset.num_cells;c++) {
136  int faceOrts[6] = {};
137  orientations->at(details.cell_local_ids[c]).getFaceOrientation(faceOrts, numFaces);
138 
139  for(int pt = 0; pt < numFaces; pt++) {
140  auto ortEdgeTan_U = Kokkos::subview(refEdges, 0, Kokkos::ALL());
141  auto ortEdgeTan_V = Kokkos::subview(refEdges, 1, Kokkos::ALL());
142 
143  Intrepid2::Impl::OrientationTools::getRefSubcellTangents(refEdges,
144  sideParam,
145  parentCell.getKey(sideDim,pt),
146  pt,
147  faceOrts[pt]);
148 
149  auto phyEdgeTan_U = Kokkos::subview(phyEdges, 0, Kokkos::ALL());
150  auto phyEdgeTan_V = Kokkos::subview(phyEdges, 1, Kokkos::ALL());
151  auto J = Kokkos::subview(worksetJacobians, c, pt, Kokkos::ALL(), Kokkos::ALL());
152 
153  Intrepid2::Kernels::Serial::matvec_product(phyEdgeTan_U, J, ortEdgeTan_U);
154  Intrepid2::Kernels::Serial::matvec_product(phyEdgeTan_V, J, ortEdgeTan_V);
155 
156  // take the cross product of the two vectors
157  gatherFieldNormals(c,pt,0) = (phyEdgeTan_U(1)*phyEdgeTan_V(2) - phyEdgeTan_U(2)*phyEdgeTan_V(1));
158  gatherFieldNormals(c,pt,1) = (phyEdgeTan_U(2)*phyEdgeTan_V(0) - phyEdgeTan_U(0)*phyEdgeTan_V(2));
159  gatherFieldNormals(c,pt,2) = (phyEdgeTan_U(0)*phyEdgeTan_V(1) - phyEdgeTan_U(1)*phyEdgeTan_V(0));
160  }
161  }
162 
163 }
164 
165 #endif
Teuchos::RCP< const std::vector< Intrepid2::Orientation > > orientations_
int num_cells
DEPRECATED - use: numCells()
void setupArrays(const Teuchos::RCP< const panzer::PointRule > &pr)
Sizes/allocates memory for arrays.
Kokkos::DynRankView< typename InputArray::value_type, PHX::Device > createDynRankView(const InputArray &a, const std::string &name, const DimensionPack... dims)
Wrapper to simplify Panzer use of Sacado ViewFactory.
void evaluateFields(typename Traits::EvalData d)
void postRegistrationSetup(typename Traits::SetupData d, PHX::FieldManager< Traits > &vm)