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ProcessScaleInFld.cpp
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2 //
3 // File: ProcessScaleInFld.cpp
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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: Scale input fld
33 //
34 ////////////////////////////////////////////////////////////////////////////////
35 
36 #include <string>
37 #include <iostream>
38 using namespace std;
39 
40 #include "ProcessScaleInFld.h"
41 
44 
45 namespace Nektar
46 {
47 namespace Utilities
48 {
49 
50 ModuleKey ProcessScaleInFld::className =
52  ModuleKey(eProcessModule, "scaleinputfld"),
53  ProcessScaleInFld::create, "rescale input field by a constant factor.");
54 
55 ProcessScaleInFld::ProcessScaleInFld(FieldSharedPtr f) : ProcessModule(f)
56 {
57  if((f->m_inputfiles.count("fld") == 0) &&
58  (f->m_inputfiles.count("rst") == 0) &&
59  (f->m_inputfiles.count("chk") == 0))
60  {
61  cout << "A fld, chk or rst input file must be specified for the "
62  "scaleinputfld module" << endl;
63  exit(3);
64  }
65 
66  m_config["scale"] = ConfigOption(false,"NotSet","scale factor");
67  ASSERTL0(m_config["scale"].as<string>().compare("NotSet") != 0,
68  "scaleinputfld: Need to specify a sacle factor");
69 }
70 
72 {
73 }
74 
75 void ProcessScaleInFld::Process(po::variables_map &vm)
76 {
77 
78  ASSERTL0(m_f->m_data.size() != 0,"No input data defined");
79 
80  string scalestr = m_config["scale"].as<string>();
81  NekDouble scale = boost::lexical_cast<NekDouble>(scalestr);
82 
83  if (m_f->m_verbose)
84  {
85  cout << "ProcessScaleInFld: Rescaling input fld by factor " << scale << endl;
86  }
87 
88  for(int i = 0; i < m_f->m_data.size(); ++i)
89  {
90  int datalen = m_f->m_data[i].size();
91 
92  Vmath::Smul(datalen, scale, &(m_f->m_data[i][0]), 1,
93  &(m_f->m_data[i][0]), 1);
94  }
95 
96  if(m_f->m_exp.size())// expansiosn are defined reload field
97  {
98  int nfields = m_f->m_fielddef[0]->m_fields.size();
99 
100  // import basic field again in case of rescaling
101  for (int j = 0; j < nfields; ++j)
102  {
103  for (int i = 0; i < m_f->m_data.size(); ++i)
104  {
105  m_f->m_exp[j]->ExtractDataToCoeffs(
106  m_f->m_fielddef[i],
107  m_f->m_data[i],
108  m_f->m_fielddef[i]->m_fields[j],
109  m_f->m_exp[j]->UpdateCoeffs());
110  }
111  }
112  }
113 }
114 
115 }
116 }
#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.
void Smul(int n, const T alpha, const T *x, const int incx, T *y, const int incy)
Scalar multiply y = alpha*y.
Definition: Vmath.cpp:199
double NekDouble
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