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ProcessHomogeneousPlane.cpp
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2 //
3 // File: ProcessHomogeneousPlane.cpp
4 //
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9 // Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
10 // Department of Aeronautics, Imperial College London (UK), and Scientific
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31 //
32 // Description: Extract a single plane of a 3DH1D field.
33 //
34 ////////////////////////////////////////////////////////////////////////////////
35 
36 #include <string>
37 #include <iostream>
38 using namespace std;
39 
41 
44 
45 namespace Nektar
46 {
47 namespace Utilities
48 {
49 
50 ModuleKey ProcessHomogeneousPlane::className =
52  ModuleKey(eProcessModule, "homplane"),
53  ProcessHomogeneousPlane::create,
54  "Extracts a plane from a 3DH1D expansion, requires planeid to be "
55  "defined.");
56 
57 ProcessHomogeneousPlane::ProcessHomogeneousPlane(FieldSharedPtr f)
58  : ProcessModule(f)
59 {
60  m_config["planeid"] = ConfigOption(false, "NotSet", "plane id to extract");
61  m_config["wavespace"] =
62  ConfigOption(true, "NotSet", "Extract plane in Fourier space");
63 }
64 
66 {
67 }
68 
69 void ProcessHomogeneousPlane::Process(po::variables_map &vm)
70 {
71  if (m_f->m_verbose)
72  {
73  cout << "ProcessHomogeneousPlane: Extracting plane..." << endl;
74  }
75 
76  if ((m_f->m_fielddef[0]->m_numHomogeneousDir) != 1)
77  {
78  ASSERTL0(false,
79  "ProcessHomogeneousPlane only works for Homogeneous1D.");
80  }
81 
82  ASSERTL0(m_config["planeid"].m_beenSet,
83  "Missing parameter planeid for ProcessHomogeneousPlane");
84 
85  int planeid = m_config["planeid"].as<int>();
86  int nfields = m_f->m_fielddef[0]->m_fields.size();
87 
88  int nstrips;
89  m_f->m_session->LoadParameter("Strip_Z", nstrips, 1);
90 
91  for (int s = 0; s < nstrips; ++s)
92  {
93  for (int i = 0; i < nfields; ++i)
94  {
95  int n = s * nfields + i;
96  m_f->m_exp[n] = m_f->m_exp[n]->GetPlane(planeid);
97 
98  if (m_config["wavespace"].m_beenSet)
99  {
100  m_f->m_exp[n]->BwdTrans(m_f->m_exp[n]->GetCoeffs(),
101  m_f->m_exp[n]->UpdatePhys());
102  }
103  else
104  {
105  m_f->m_exp[n]->FwdTrans(m_f->m_exp[n]->GetPhys(),
106  m_f->m_exp[n]->UpdateCoeffs());
107  }
108  }
109  }
110  std::vector<LibUtilities::FieldDefinitionsSharedPtr> FieldDef =
111  m_f->m_exp[0]->GetFieldDefinitions();
112  std::vector<std::vector<NekDouble> > FieldData(FieldDef.size());
113 
114  for (int s = 0; s < nstrips; ++s)
115  {
116  for (int j = 0; j < nfields; ++j)
117  {
118  for (int i = 0; i < FieldDef.size() / nstrips; ++i)
119  {
120  int n = s * FieldDef.size() / nstrips + i;
121 
122  FieldDef[n]->m_fields.push_back(
123  m_f->m_fielddef[0]->m_fields[j]);
124  m_f->m_exp[s * nfields + j]->AppendFieldData(FieldDef[n],
125  FieldData[n]);
126  }
127  }
128  }
129 
130  m_f->m_fielddef = FieldDef;
131  m_f->m_data = FieldData;
132 }
133 }
134 }
#define ASSERTL0(condition, msg)
Definition: ErrorUtil.hpp:161
pair< ModuleType, string > ModuleKey
virtual void Process()=0
map< string, ConfigOption > m_config
List of configuration values.
STL namespace.
FieldSharedPtr m_f
Field object.
boost::shared_ptr< Field > FieldSharedPtr
Definition: Field.hpp:695
Represents a command-line configuration option.
ModuleFactory & GetModuleFactory()
Abstract base class for processing modules.
tKey RegisterCreatorFunction(tKey idKey, CreatorFunction classCreator, tDescription pDesc="")
Register a class with the factory.
Definition: NekFactory.hpp:215