Represents a face comprised of three or more edges. More...

#include <MeshElements.h>

Collaboration diagram for Nektar::Utilities::Face:

Public Member Functions
	Face (std::vector< NodeSharedPtr > pVertexList, std::vector< NodeSharedPtr > pFaceNodes, std::vector< EdgeSharedPtr > pEdgeList, LibUtilities::PointsType pCurveType)
	Create a new face.
	Face (const Face &pSrc)
	Copy an existing face.
	~Face ()
bool	operator== (Face &pSrc)
	Equality is defined by matching all vertices.
unsigned int	GetNodeCount () const
	Returns the total number of nodes (vertices, edge nodes and face nodes).
std::string	GetXmlCurveString () const
	Generates a string listing the coordinates of all nodes associated with this face.
SpatialDomains::Geometry2DSharedPtr	GetGeom (int coordDim)
	Generate either SpatialDomains::TriGeom or SpatialDomains::QuadGeom for this element.

Public Attributes
unsigned int	m_id
	ID of the face.
std::vector< NodeSharedPtr >	m_vertexList
	List of vertex nodes.
std::vector< EdgeSharedPtr >	m_edgeList
	List of corresponding edges.
std::vector< NodeSharedPtr >	m_faceNodes
	List of face-interior nodes defining the shape of the face.
LibUtilities::PointsType	m_curveType
	Distribution of points in this face.
vector< pair< ElementSharedPtr, int > >	m_elLink
	Element(s) which are linked to this face.
SpatialDomains::Geometry2DSharedPtr	m_geom

Detailed Description

Represents a face comprised of three or more edges.

A face is defined by a list of vertices, a list of edges joining these vertices, and a list of control nodes within the interior of the face, defining the shape of the face.

Definition at line 352 of file MeshElements.h.

Constructor & Destructor Documentation

Nektar::Utilities::Face::Face	(	std::vector< NodeSharedPtr >	pVertexList,
		std::vector< NodeSharedPtr >	pFaceNodes,
		std::vector< EdgeSharedPtr >	pEdgeList,
		LibUtilities::PointsType	pCurveType
	)

inline

Create a new face.

Definition at line 355 of file MeshElements.h.

                : m_vertexList(pVertexList), 
                m_edgeList  (pEdgeList),
                m_faceNodes (pFaceNodes), 
                m_curveType (pCurveType),
                 m_geom    () {}

Nektar::Utilities::Face::Face ( const Face & pSrc )

inline

Copy an existing face.

Definition at line 366 of file MeshElements.h.

                : m_vertexList(pSrc.m_vertexList), m_edgeList  (pSrc.m_edgeList),
                m_faceNodes (pSrc.m_faceNodes),  m_curveType (pSrc.m_curveType),
                  m_geom    (pSrc.m_geom) {}

Nektar::Utilities::Face::~Face ( )

inline

Definition at line 370 of file MeshElements.h.

{}

Member Function Documentation

SpatialDomains::Geometry2DSharedPtr Nektar::Utilities::Face::GetGeom ( int coordDim )

inline

Generate either SpatialDomains::TriGeom or SpatialDomains::QuadGeom for this element.

Definition at line 501 of file MeshElements.h.

References Nektar::SpatialDomains::SegGeom::GetEdgeOrientation(), m_edgeList, and m_id.

            {
                int nEdge = m_edgeList.size();
                
                SpatialDomains::SegGeomSharedPtr    edges[4];
                SpatialDomains::Geometry2DSharedPtr ret;
                StdRegions::Orientation             edgeo[4];
                for (int i = 0; i < nEdge; ++i)
                {
                    edges[i] = m_edgeList[i]->GetGeom(coordDim);
                }
                
                for (int i = 0; i < nEdge; ++i)
                {
                    edgeo[i] = SpatialDomains::SegGeom::GetEdgeOrientation(
                        *edges[i], *edges[(i+1) % nEdge]);
                }
                
                if (nEdge == 3)
                {
                    ret = MemoryManager<SpatialDomains::TriGeom>::
                        AllocateSharedPtr(m_id, edges, edgeo);
                }
                else
                {
                    ret = MemoryManager<SpatialDomains::QuadGeom>::
                        AllocateSharedPtr(m_id, edges, edgeo);
                }
                return ret;
            }

unsigned int Nektar::Utilities::Face::GetNodeCount ( ) const

inline

Returns the total number of nodes (vertices, edge nodes and face nodes).

Definition at line 389 of file MeshElements.h.

References m_edgeList, m_faceNodes, and m_vertexList.

Referenced by GetXmlCurveString().

            {
                unsigned int n = m_faceNodes.size();
                for (int i = 0; i < m_edgeList.size(); ++i)
                {
                    n += m_edgeList[i]->GetNodeCount();
                }
                n -= m_vertexList.size();
                return n;
            }

std::string Nektar::Utilities::Face::GetXmlCurveString ( ) const

inline

Generates a string listing the coordinates of all nodes associated with this face.

Definition at line 402 of file MeshElements.h.

References ASSERTL0, Nektar::LibUtilities::eNodalTriElec, Nektar::LibUtilities::eNodalTriEvenlySpaced, Nektar::LibUtilities::eNodalTriFekete, GetNodeCount(), m_curveType, m_edgeList, m_faceNodes, and m_vertexList.

            {
                std::stringstream s;
                std::string str;
                
                // Treat 2D point distributions differently to 3D.
                if (m_curveType == LibUtilities::eNodalTriFekete       || 
                    m_curveType == LibUtilities::eNodalTriEvenlySpaced ||
                    m_curveType == LibUtilities::eNodalTriElec)
                {
                    vector<NodeSharedPtr> tmp;
                    int n = m_edgeList[0]->GetNodeCount();
                    
                    tmp.insert(tmp.end(), m_vertexList.begin(), m_vertexList.end());
                    for (int k = 0; k < m_edgeList.size(); ++k) 
                    {
                        tmp.insert(tmp.end(), m_edgeList[k]->m_edgeNodes.begin(),
                                   m_edgeList[k]->m_edgeNodes.end());
                        if (m_edgeList[k]->m_n1 != m_vertexList[k])
                        {
                            // If edge orientation is reversed relative to node
                            // ordering, we need to reverse order of nodes.
                            std::reverse(tmp.begin() + 3 + k*(n-2),
                                         tmp.begin() + 3 + (k+1)*(n-2));
                        }
                    }
                    tmp.insert(tmp.end(), m_faceNodes.begin(), m_faceNodes.end());
                    
                    for (int k = 0; k < tmp.size(); ++k) {
                        s << std::scientific << std::setprecision(8) << "    "
                          <<  tmp[k]->m_x << "  " << tmp[k]->m_y
                          << "  " << tmp[k]->m_z << "    ";
                    }
                    
                    return s.str();
                }
                else
                {
                    // Write out in 2D tensor product order.
                    ASSERTL0(m_vertexList.size() == 4,
                             "Face nodes of tensor product only supported "
                             "for quadrilaterals.");
                    
                    int n = (int)sqrt((NekDouble)GetNodeCount());
                    vector<NodeSharedPtr> tmp(n*n);
                    
                    ASSERTL0(n*n == GetNodeCount(), "Wrong number of modes?");
                    
                    // Write vertices
                    tmp[0]       = m_vertexList[0];
                    tmp[n-1]     = m_vertexList[1];
                    tmp[n*n-1]   = m_vertexList[2];
                    tmp[n*(n-1)] = m_vertexList[3];
                    
                    // Write edge-interior
                    int skips[4][2] = {{0,1}, {n-1,n}, {n*(n-1),1}, {0,n}};
                    for (int i = 0; i < 4; ++i)
                    {
                        bool reverseEdge = m_edgeList[i]->m_n1 == m_vertexList[i];
                        
                        if (reverseEdge)
                        {
                            for (int j = n-2; j > 0; --j)
                            {
                                tmp[skips[i][0] + j*skips[i][1]] = 
                                    m_edgeList[i]->m_edgeNodes[j-1];
                            }
                        }
                        else
                        {
                            for (int j = 1; j < n-1; ++j)
                            {
                                tmp[skips[i][0] + j*skips[i][1]] = 
                                    m_edgeList[i]->m_edgeNodes[j-1];
                            }
                        }
                    }
                    // Write interior
                    for (int i = 1; i < n-1; ++i)
                    {
                        for (int j = 1; j < n-1; ++j)
                        {
                            tmp[i*n+j] = m_faceNodes[(i-1)*(n-2)+(j-1)];
                        }
                    }
                    for (int k = 0; k < tmp.size(); ++k) {
                        s << std::scientific << std::setprecision(8) << "    "
                          <<  tmp[k]->m_x << "  " << tmp[k]->m_y
                          << "  " << tmp[k]->m_z << "    ";
                    }
                    
                    return s.str();
                }
            }

bool Nektar::Utilities::Face::operator== ( Face & pSrc )

inline

Equality is defined by matching all vertices.

Definition at line 373 of file MeshElements.h.

References Nektar::StdRegions::find(), Nektar::iterator, and m_vertexList.

            {
                std::vector<NodeSharedPtr>::iterator it1, it2;
                for (it1 = m_vertexList.begin(); it1 != m_vertexList.end(); ++it1)
                {
                    if (find(pSrc.m_vertexList.begin(), pSrc.m_vertexList.end(), *it1)
                            == pSrc.m_vertexList.end())
                    {
                        return false;
                    }
                }
                return true;
            }