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.
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.
void	PrintConfig ()
	Print out all configuration options for a module.
void	SetDefaults ()
	Sets default configuration options for those which have not been set.
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.

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

Static Public Attributes
static ModuleKey	className

Additional Inherited Members
Protected Member Functions inherited from Nektar::Utilities::Module
	Module ()
virtual void	ProcessEdges (bool ReprocessEdges=true)
	Extract element edges.
virtual void	ProcessFaces (bool ReprocessFaces=true)
	Extract element faces.
virtual void	ProcessElements ()
	Generate element IDs.
virtual void	ProcessComposites ()
	Generate composites.
void	ReorderPrisms (PerMap &perFaces)
	Reorder node IDs so that prisms and tetrahedra are aligned correctly.
void	PrismLines (int prism, PerMap &perFaces, set< int > &prismsDone, vector< ElementSharedPtr > &line)
Protected Attributes inherited from Nektar::Utilities::Module
FieldSharedPtr	m_f
	Field object.
map< string, ConfigOption >	m_config
	List of configuration values.
bool	m_requireEquiSpaced
MeshSharedPtr	m_mesh
	Mesh object.

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 51 of file ProcessScalar.h.

Constructor & Destructor Documentation

Nektar::Utilities::ProcessScalar::ProcessScalar

(

MeshSharedPtr

m

)

Definition at line 56 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 66 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 55 of file ProcessScalar.h.

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

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

virtual

Write mesh to output file.

Implements Nektar::Utilities::Module.

Definition at line 70 of file ProcessScalar.cpp.

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

        {
            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 58 of file ProcessScalar.h.