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ProcessNumModes.cpp
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2 //
3 // File: ProcessNumModes.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
11 // Computing and Imaging Institute, University of Utah (USA).
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31 //
32 // Description: Writes the number of modes in each direction.
33 //
34 ////////////////////////////////////////////////////////////////////////////////
35 
36 #include <string>
37 #include <iostream>
38 using namespace std;
39 
40 #include "ProcessNumModes.h"
41 
44 #include <StdRegions/StdQuadExp.h>
45 
46 namespace Nektar
47 {
48 namespace Utilities
49 {
50 
51 ModuleKey ProcessNumModes::className =
53  ModuleKey(eProcessModule, "nummodes"), ProcessNumModes::create,
54  "Computes number of modes in each direction for each element.");
55 
56 ProcessNumModes::ProcessNumModes(FieldSharedPtr f) : ProcessModule(f)
57 {
58 }
59 
61 {
62 }
63 
64 void ProcessNumModes::Process(po::variables_map &vm)
65 {
66  if (m_f->m_verbose)
67  {
68  cout << "ProcessNumModes: Calculating number of modes..." << endl;
69  }
70 
71  int i, j, s;
72  int expdim = m_f->m_graph->GetMeshDimension();
73  int nfields = m_f->m_fielddef[0]->m_fields.size();
74  int addfields = expdim;
75  int npoints = m_f->m_exp[0]->GetNpoints();
76  Array<OneD, Array<OneD, NekDouble> > outfield(addfields);
77 
78  int nstrips;
79 
80  m_f->m_session->LoadParameter("Strip_Z", nstrips, 1);
81 
82  m_f->m_exp.resize(nfields * nstrips);
83 
84  for (i = 0; i < addfields; ++i)
85  {
86  outfield[i] = Array<OneD, NekDouble>(npoints);
87  }
88 
89  vector<MultiRegions::ExpListSharedPtr> Exp(nstrips * addfields);
90 
91  int nExp, nq, offset;
92  nExp = m_f->m_exp[0]->GetExpSize();
93 
94  for (int n = 0; n < nExp; n++)
95  {
96  offset = m_f->m_exp[0]->GetPhys_Offset(n);
97  nq = m_f->m_exp[0]->GetExp(n)->GetTotPoints();
98 
99  for (i = 0; i < expdim; i++)
100  {
101  int P = m_f->m_exp[0]->GetExp(n)->GetBasis(i)->GetNumModes();
102  Array<OneD, NekDouble> result = outfield[i] + offset;
103  Vmath::Fill(nq, 1.0 * P, result, 1);
104  }
105  }
106 
107  for (s = 0; s < nstrips; ++s)
108  {
109  for (i = 0; i < addfields; ++i)
110  {
111  int n = s * addfields + i;
112  Exp[n] =
113  m_f->AppendExpList(m_f->m_fielddef[0]->m_numHomogeneousDir);
114  Exp[n]->UpdatePhys() = outfield[i];
115  Exp[n]->FwdTrans_IterPerExp(outfield[i], Exp[n]->UpdateCoeffs());
116  }
117  }
118 
120  for (s = 0; s < nstrips; ++s)
121  {
122  for (i = 0; i < addfields; ++i)
123  {
124  it = m_f->m_exp.begin() + s * (nfields + addfields) + nfields + i;
125  m_f->m_exp.insert(it, Exp[s * addfields + i]);
126  }
127  }
128 
129  vector<string> outname;
130  outname.push_back("P1");
131  if (addfields >= 2)
132  {
133  outname.push_back("P2");
134  }
135 
136  if (addfields == 3)
137  {
138  outname.push_back("P3");
139  }
140 
141  std::vector<LibUtilities::FieldDefinitionsSharedPtr> FieldDef =
142  m_f->m_exp[0]->GetFieldDefinitions();
143  std::vector<std::vector<NekDouble> > FieldData(FieldDef.size());
144 
145  // homogeneous strip variant
146  for (s = 0; s < nstrips; ++s)
147  {
148  for (j = 0; j < nfields + addfields; ++j)
149  {
150  for (i = 0; i < FieldDef.size() / nstrips; ++i)
151  {
152  int n = s * FieldDef.size() / nstrips + i;
153 
154  if (j >= nfields)
155  {
156  FieldDef[n]->m_fields.push_back(outname[j - nfields]);
157  }
158  else
159  {
160  FieldDef[n]->m_fields.push_back(
161  m_f->m_fielddef[0]->m_fields[j]);
162  }
163 
164  m_f->m_exp[s * (nfields + addfields) + j]->AppendFieldData(
165  FieldDef[n], FieldData[n]);
166  }
167  }
168  }
169 
170  m_f->m_fielddef = FieldDef;
171  m_f->m_data = FieldData;
172 }
173 }
174 }
pair< ModuleType, string > ModuleKey
void Fill(int n, const T alpha, T *x, const int incx)
Fill a vector with a constant value.
Definition: Vmath.cpp:46
virtual void Process()=0
STL namespace.
FieldSharedPtr m_f
Field object.
boost::shared_ptr< Field > FieldSharedPtr
Definition: Field.hpp:695
StandardMatrixTag boost::call_traits< LhsDataType >::const_reference rhs typedef NekMatrix< LhsDataType, StandardMatrixTag >::iterator iterator
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