Nektar::Utilities::ProcessScalar Class Reference

This processing module calculates the Jacobian of elements using SpatialDomains::GeomFactors and the Element::GetGeom method. For now it simply prints a list of elements which have negative Jacobian. More...

#include <ProcessScalar.h>

Inheritance diagram for Nektar::Utilities::ProcessScalar:

Collaboration diagram for Nektar::Utilities::ProcessScalar:

Public Member Functions
	ProcessScalar (MeshSharedPtr m)
virtual	~ProcessScalar ()
virtual void	Process ()
	Write mesh to output file. More...
Public Member Functions inherited from Nektar::Utilities::ProcessModule
	ProcessModule ()
	ProcessModule (FieldSharedPtr p_f)
	ProcessModule (MeshSharedPtr p_m)
Public Member Functions inherited from Nektar::Utilities::Module
	Module (FieldSharedPtr p_f)
virtual void	Process (po::variables_map &vm)=0
void	RegisterConfig (string key, string value)
	Register a configuration option with a module. More...
void	PrintConfig ()
	Print out all configuration options for a module. More...
void	SetDefaults ()
	Sets default configuration options for those which have not been set. More...
bool	GetRequireEquiSpaced (void)
void	SetRequireEquiSpaced (bool pVal)
void	EvaluateTriFieldAtEquiSpacedPts (LocalRegions::ExpansionSharedPtr &exp, const Array< OneD, const NekDouble > &infield, Array< OneD, NekDouble > &outfield)
	Module (MeshSharedPtr p_m)
void	RegisterConfig (string key, string value)
void	PrintConfig ()
void	SetDefaults ()
MeshSharedPtr	GetMesh ()
virtual void	ProcessVertices ()
	Extract element vertices. More...
virtual void	ProcessEdges (bool ReprocessEdges=true)
	Extract element edges. More...
virtual void	ProcessFaces (bool ReprocessFaces=true)
	Extract element faces. More...
virtual void	ProcessElements ()
	Generate element IDs. More...
virtual void	ProcessComposites ()
	Generate composites. More...
virtual void	ClearElementLinks ()

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

Static Public Attributes
static ModuleKey	className

Additional Inherited Members
Protected Member Functions inherited from Nektar::Utilities::Module
	Module ()
void	ReorderPrisms (PerMap &perFaces)
	Reorder node IDs so that prisms and tetrahedra are aligned correctly. More...
void	PrismLines (int prism, PerMap &perFaces, set< int > &prismsDone, vector< ElementSharedPtr > &line)
Protected Attributes inherited from Nektar::Utilities::Module
FieldSharedPtr	m_f
	Field object. More...
map< string, ConfigOption >	m_config
	List of configuration values. More...
bool	m_requireEquiSpaced
MeshSharedPtr	m_mesh
	Mesh object. More...

Detailed Description

This processing module calculates the Jacobian of elements using SpatialDomains::GeomFactors and the Element::GetGeom method. For now it simply prints a list of elements which have negative Jacobian.

Definition at line 52 of file ProcessScalar.h.

Constructor & Destructor Documentation

Nektar::Utilities::ProcessScalar::ProcessScalar

(

MeshSharedPtr

m

)

Definition at line 55 of file ProcessScalar.cpp.

References Nektar::Utilities::Module::m_config.

                                            : ProcessModule(m)
{
    m_config["surf"] = ConfigOption(
        false, "-1", "Tag identifying surface/composite to process.");
    m_config["nq"] =
        ConfigOption(false, "-1", "Number of quadrature points to generate.");
    m_config["scalar"] = ConfigOption(false, "", "Expression to evaluate.");
}

Nektar::Utilities::ProcessScalar::~ProcessScalar ( )

virtual

Definition at line 64 of file ProcessScalar.cpp.

{
}

Member Function Documentation

static boost::shared_ptr<Module> Nektar::Utilities::ProcessScalar::create ( MeshSharedPtr  m )

inlinestatic

Creates an instance of this class.

Definition at line 56 of file ProcessScalar.h.

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

    {
        return MemoryManager<ProcessScalar>::AllocateSharedPtr(m);
    }

void Nektar::Utilities::ProcessScalar::Process ( )

virtual

Write mesh to output file.

Implements Nektar::Utilities::Module.

Definition at line 68 of file ProcessScalar.cpp.

References Nektar::LibUtilities::AnalyticExpressionEvaluator::DefineFunction(), Nektar::ParseUtils::GenerateSeqVector(), Nektar::Utilities::Module::m_config, Nektar::Utilities::Module::m_mesh, Nektar::NekMeshUtils::Node::m_x, Nektar::NekMeshUtils::Node::m_y, Nektar::NekMeshUtils::Node::m_z, and Nektar::NekMeshUtils::surf.

{
    int i, j, k;
    string surf = m_config["surf"].as<string>();

    // Obtain vector of surface IDs from string.
    vector<unsigned int> surfs;
    ParseUtils::GenerateSeqVector(surf.c_str(), surfs);
    sort(surfs.begin(), surfs.end());

    // If we're running in verbose mode print out a list of surfaces.
    if (m_mesh->m_verbose)
    {
        cout << "ProcessScalar: extracting surface"
             << (surfs.size() > 1 ? "s" : "") << " " << surf << endl;
    }

    const int nq = m_config["nq"].as<int>();
    string expr  = m_config["scalar"].as<string>();

    LibUtilities::AnalyticExpressionEvaluator rEval;
    int rExprId = rEval.DefineFunction("x y z", expr);

    // Make a copy of all existing elements of one dimension lower.
    vector<ElementSharedPtr> el = m_mesh->m_element[m_mesh->m_expDim - 1];

    // Iterate over list of surface elements.
    for (i = 0; i < el.size(); ++i)
    {
        // Work out whether this lies on our surface of interest.
        vector<int> inter, tags = el[i]->GetTagList();

        sort(tags.begin(), tags.end());
        set_intersection(surfs.begin(),
                         surfs.end(),
                         tags.begin(),
                         tags.end(),
                         back_inserter(inter));

        // It doesn't continue to next element.
        if (inter.size() != 1)
        {
            continue;
        }

        // Grab face link.
        FaceSharedPtr f = el[i]->GetFaceLink();

        // Update vertices
        for (j = 0; j < 4; ++j)
        {
            NodeSharedPtr n = f->m_vertexList[j];
            n->m_z          = rEval.Evaluate(rExprId, n->m_x, n->m_y, 0.0, 0.0);

            if (n->m_z < 1e-32)
            {
                n->m_z = 0;
            }
        }

        // Put curvature into edges
        for (j = 0; j < f->m_edgeList.size(); ++j)
        {
            NodeSharedPtr n1 = f->m_edgeList[j]->m_n1;
            NodeSharedPtr n2 = f->m_edgeList[j]->m_n2;
            Node disp        = *n2 - *n1;

            f->m_edgeList[j]->m_edgeNodes.clear();

            for (k = 1; k < nq - 1; ++k)
            {
                Node n = *n1 + disp * k / (nq - 1.0);
                n.m_z = rEval.Evaluate(rExprId, n.m_x, n.m_y, 0.0, 0.0);
                if (n.m_z < 1e-32)
                {
                    n.m_z = 0;
                }

                f->m_edgeList[j]->m_edgeNodes.push_back(
                    NodeSharedPtr(new Node(n)));
            }
        }
    }
}

Member Data Documentation

ModuleKey Nektar::Utilities::ProcessScalar::className

static

Initial value:

= GetModuleFactory().RegisterCreatorFunction(
    ModuleKey(eProcessModule, "scalar"),
    ProcessScalar::create,
    "Impose a scalar function z=f(x,y) on a surface.")

Definition at line 60 of file ProcessScalar.h.