Nektar::FieldUtils::ProcessHomogeneousStretch Class Reference

This processing module stretches the homogeneous direction of a 3DH1D expansion by an integer factor. More...

#include <ProcessHomogeneousStretch.h>

Inheritance diagram for Nektar::FieldUtils::ProcessHomogeneousStretch:

Collaboration diagram for Nektar::FieldUtils::ProcessHomogeneousStretch:

Public Member Functions
	ProcessHomogeneousStretch (FieldSharedPtr f)
virtual	~ProcessHomogeneousStretch ()
virtual void	Process (po::variables_map &vm)
	Write mesh to output file. More...
virtual std::string	GetModuleName ()
Public Member Functions inherited from Nektar::FieldUtils::ProcessModule
	ProcessModule ()
	ProcessModule (FieldSharedPtr p_f)
Public Member Functions inherited from Nektar::FieldUtils::Module
FIELD_UTILS_EXPORT	Module (FieldSharedPtr p_f)
FIELD_UTILS_EXPORT void	RegisterConfig (string key, string value)
	Register a configuration option with a module. More...
FIELD_UTILS_EXPORT void	PrintConfig ()
	Print out all configuration options for a module. More...
FIELD_UTILS_EXPORT void	SetDefaults ()
	Sets default configuration options for those which have not been set. More...
FIELD_UTILS_EXPORT bool	GetRequireEquiSpaced (void)
FIELD_UTILS_EXPORT void	SetRequireEquiSpaced (bool pVal)
FIELD_UTILS_EXPORT void	EvaluateTriFieldAtEquiSpacedPts (LocalRegions::ExpansionSharedPtr &exp, const Array< OneD, const NekDouble > &infield, Array< OneD, NekDouble > &outfield)

Static Public Member Functions
static boost::shared_ptr< Module >	create (FieldSharedPtr f)
	Creates an instance of this class. More...

Static Public Attributes
static ModuleKey	className

Additional Inherited Members
Protected Member Functions inherited from Nektar::FieldUtils::Module
	Module ()
Protected Attributes inherited from Nektar::FieldUtils::Module
FieldSharedPtr	m_f
	Field object. More...
map< string, ConfigOption >	m_config
	List of configuration values. More...
bool	m_requireEquiSpaced

Detailed Description

This processing module stretches the homogeneous direction of a 3DH1D expansion by an integer factor.

Definition at line 50 of file ProcessHomogeneousStretch.h.

Constructor & Destructor Documentation

Nektar::FieldUtils::ProcessHomogeneousStretch::ProcessHomogeneousStretch

(

FieldSharedPtr

f

)

Definition at line 60 of file ProcessHomogeneousStretch.cpp.

References Nektar::FieldUtils::Module::m_config.

    : ProcessModule(f)
{
    m_config["factor"] = ConfigOption(false, "NotSet", "stretch factor");
}

Nektar::FieldUtils::ProcessHomogeneousStretch::~ProcessHomogeneousStretch ( )

virtual

Definition at line 66 of file ProcessHomogeneousStretch.cpp.

{
}

Member Function Documentation

static boost::shared_ptr<Module> Nektar::FieldUtils::ProcessHomogeneousStretch::create ( FieldSharedPtr  f )

inlinestatic

Creates an instance of this class.

Definition at line 54 of file ProcessHomogeneousStretch.h.

References Nektar::MemoryManager< DataType >::AllocateSharedPtr().

    {
        return MemoryManager<ProcessHomogeneousStretch>::AllocateSharedPtr(f);
    }

virtual std::string Nektar::FieldUtils::ProcessHomogeneousStretch::GetModuleName ( )

inlinevirtual

Implements Nektar::FieldUtils::Module.

Definition at line 66 of file ProcessHomogeneousStretch.h.

    {
        return "ProcessHomogeneousStretch";
    }

void Nektar::FieldUtils::ProcessHomogeneousStretch::Process ( po::variables_map &  vm )

virtual

Write mesh to output file.

Implements Nektar::FieldUtils::Module.

Definition at line 70 of file ProcessHomogeneousStretch.cpp.

References ASSERTL0, Nektar::FieldUtils::Module::m_config, Nektar::FieldUtils::Module::m_f, CellMLToNektar.cellml_metadata::p, Vmath::Vcopy(), and Vmath::Zero().

{
    if (m_f->m_verbose)
    {
        if (m_f->m_comm->GetRank() == 0)
        {
            cout << "ProcessHomogeneousStretch: Stretching expansion..."
                 << endl;
        }
    }

    if ((m_f->m_fielddef[0]->m_numHomogeneousDir) != 1)
    {
        ASSERTL0(false,
                 "ProcessHomogeneousStretch only works for Homogeneous1D.");
    }

    ASSERTL0(m_config["factor"].m_beenSet,
             "Missing parameter factor for ProcessHomogeneousStretch");

    int factor  = m_config["factor"].as<int>();
    int nfields = m_f->m_fielddef[0]->m_fields.size();
    int nplanes = m_f->m_exp[0]->GetHomogeneousBasis()->GetZ().num_elements();

    ASSERTL0(factor > 1, "Parameter factor must be greater than 1.");

    int nstrips;
    m_f->m_session->LoadParameter("Strip_Z", nstrips, 1);

    for (int s = 0; s < nstrips; ++s)
    {
        for (int i = 0; i < nfields; ++i)
        {
            int n       = s * nfields + i;
            int ncoeffs = m_f->m_exp[n]->GetPlane(0)->GetNcoeffs();
            // Loop planes backwards so we can copy in place
            for (int p = nplanes - 1; p > 1; --p)
            {
                int newP = 2 * factor * (p / 2) + p % 2;
                if (newP < nplanes)
                {
                    Vmath::Vcopy(
                        ncoeffs, m_f->m_exp[n]->GetPlane(p)->GetCoeffs(), 1,
                        m_f->m_exp[n]->GetPlane(newP)->UpdateCoeffs(), 1);
                }
                Vmath::Zero(ncoeffs, m_f->m_exp[n]->GetPlane(p)->UpdateCoeffs(),
                            1);
            }

            m_f->m_exp[n]->BwdTrans(m_f->m_exp[n]->GetCoeffs(),
                                    m_f->m_exp[n]->UpdatePhys());
        }
    }
    std::vector<LibUtilities::FieldDefinitionsSharedPtr> FieldDef =
        m_f->m_exp[0]->GetFieldDefinitions();
    std::vector<std::vector<NekDouble> > FieldData(FieldDef.size());

    for (int s = 0; s < nstrips; ++s)
    {
        for (int j = 0; j < nfields; ++j)
        {
            for (int i = 0; i < FieldDef.size() / nstrips; ++i)
            {
                int n = s * FieldDef.size() / nstrips + i;

                FieldDef[n]->m_fields.push_back(
                    m_f->m_fielddef[0]->m_fields[j]);
                m_f->m_exp[s * nfields + j]->AppendFieldData(FieldDef[n],
                                                             FieldData[n]);
            }
        }
    }
    for (int i = 0; i < FieldDef.size(); ++i)
    {
        FieldDef[i]->m_homogeneousLengths[0] =
            factor * m_f->m_fielddef[i]->m_homogeneousLengths[0];
    }
    m_f->m_fielddef = FieldDef;
    m_f->m_data     = FieldData;
}

Member Data Documentation

ModuleKey Nektar::FieldUtils::ProcessHomogeneousStretch::className

static

Initial value:

=
    GetModuleFactory().RegisterCreatorFunction(
        ModuleKey(eProcessModule, "homstretch"),
        ProcessHomogeneousStretch::create,
        "Stretches homogeneous direction of a 3DH1D expansion, requires factor "
        "to be "
        "defined. The number of modes in the final expansion can be defined "
        "using"
        " --output-points-hom-z.")

Definition at line 58 of file ProcessHomogeneousStretch.h.