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Panzer_CrossProduct_impl.hpp
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2// ***********************************************************************
3//
4// Panzer: A partial differential equation assembly
5// engine for strongly coupled complex multiphysics systems
6// Copyright (2011) Sandia Corporation
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42
43#ifndef PANZER_EVALUATOR_CrossProduct_IMPL_HPP
44#define PANZER_EVALUATOR_CrossProduct_IMPL_HPP
45
46#include <string>
47
48#include "Panzer_PointRule.hpp"
50
51#include "Teuchos_RCP.hpp"
52
53namespace panzer {
54
55//**********************************************************************
56template<typename EvalT, typename Traits>
59 const Teuchos::ParameterList& p)
60{
61 std::string result_name = p.get<std::string>("Result Name");
62 std::string vec_a_name = p.get<std::string>("Vector A Name");
63 std::string vec_b_name = p.get<std::string>("Vector B Name");
64
65 const Teuchos::RCP<const panzer::PointRule> pr =
66 p.get< Teuchos::RCP<const panzer::PointRule> >("Point Rule");
67
68 // use a scalar field only if dimension is 2D
69 useScalarField = (pr->spatial_dimension==2);
70
71 if(!useScalarField)
72 vec_a_cross_vec_b = PHX::MDField<ScalarT>(result_name, pr->dl_vector);
73 else
74 vec_a_cross_vec_b = PHX::MDField<ScalarT>(result_name, pr->dl_scalar);
75
76 vec_a = PHX::MDField<const ScalarT>(vec_a_name, pr->dl_vector);
77 vec_b = PHX::MDField<const ScalarT>(vec_b_name, pr->dl_vector);
78
79 this->addEvaluatedField(vec_a_cross_vec_b);
80 this->addDependentField(vec_a);
81 this->addDependentField(vec_b);
82
83 std::string n = "CrossProduct: " + result_name + " = " + vec_a_name + " . " + vec_b_name;
84 this->setName(n);
85}
86
87//**********************************************************************
88template<typename EvalT, typename Traits>
89void
92 typename Traits::SetupData /* sd */,
94{
95 num_pts = vec_a.extent(1);
96 num_dim = vec_a.extent(2);
97
98 TEUCHOS_ASSERT(vec_a.extent(1) == vec_b.extent(1));
99 TEUCHOS_ASSERT(vec_a.extent(2) == vec_b.extent(2));
100}
101
102//**********************************************************************
103template<typename EvalT, typename Traits>
104void
107 typename Traits::EvalData workset)
108{
109 if(useScalarField) {
110 for (index_t cell = 0; cell < workset.num_cells; ++cell) {
111 for (int p = 0; p < num_pts; ++p) {
112 vec_a_cross_vec_b(cell,p) = vec_a(cell,p,0)*vec_b(cell,p,1)-vec_a(cell,p,1)*vec_b(cell,p,0);
113 }
114 }
115 }
116 else {
117 for (index_t cell = 0; cell < workset.num_cells; ++cell) {
118 for (int p = 0; p < num_pts; ++p) {
119 vec_a_cross_vec_b(cell,p,0) = vec_a(cell,p,1)*vec_b(cell,p,2)-vec_a(cell,p,2)*vec_b(cell,p,1);
120 vec_a_cross_vec_b(cell,p,1) = -(vec_a(cell,p,0)*vec_b(cell,p,2)-vec_a(cell,p,2)*vec_b(cell,p,0));
121 vec_a_cross_vec_b(cell,p,2) = vec_a(cell,p,0)*vec_b(cell,p,1)-vec_a(cell,p,1)*vec_b(cell,p,0);
122 }
123 }
124 }
125}
126
127//**********************************************************************
128
129}
130
131#endif
CrossProduct(const Teuchos::ParameterList &p)
void postRegistrationSetup(typename Traits::SetupData d, PHX::FieldManager< Traits > &fm)
void evaluateFields(typename Traits::EvalData d)
int num_cells
DEPRECATED - use: numCells()