A class for non-conforming AMR on higher-order hexahedral, prismatic, quadrilateral or triangular meshes. More...

#include <ncmesh.hpp>

Inheritance diagram for mfem::NCMesh:

Collaboration diagram for mfem::NCMesh:

Classes
struct	Element

struct	Face

struct	GeomInfo

struct	Master

struct	MeshId
	Identifies a vertex/edge/face in both Mesh and NCMesh. More...

struct	NCList
	Lists all edges/faces in the nonconforming mesh. More...

struct	Node

struct	Point

struct	PointMatrix

struct	Slave
	Nonconforming edge/face within a bigger edge/face. More...

struct	TmpVertex

Public Types
typedef int64_t	RefCoord

Public Member Functions
	NCMesh (const Mesh mesh, std::istream vertex_parents=NULL)

	NCMesh (const NCMesh &other)

virtual	~NCMesh ()

int	Dimension () const

int	SpaceDimension () const

int	GetNVertices () const

int	GetNEdges () const

int	GetNFaces () const

virtual void	Refine (const Array< Refinement > &refinements)

virtual void	LimitNCLevel (int max_nc_level)

const Table &	GetDerefinementTable ()

virtual void	CheckDerefinementNCLevel (const Table &deref_table, Array< int > &level_ok, int max_nc_level)

virtual void	Derefine (const Array< int > &derefs)

const NCList &	GetFaceList ()
	Return the current list of conforming and nonconforming faces. More...

const NCList &	GetEdgeList ()
	Return the current list of conforming and nonconforming edges. More...

const NCList &	GetVertexList ()

const NCList &	GetNCList (int entity)
	Return vertex/edge/face list (entity = 0/1/2, respectively). More...

void	MarkCoarseLevel ()

const CoarseFineTransformations &	GetRefinementTransforms ()

const CoarseFineTransformations &	GetDerefinementTransforms ()

void	ClearTransforms ()
	Free all internal data created by the above three functions. More...

void	GetEdgeVertices (const MeshId &edge_id, int vert_index[2], bool oriented=true) const
	Return Mesh vertex indices of an edge identified by 'edge_id'. More...

int	GetEdgeNCOrientation (const MeshId &edge_id) const

int	GetFaceVerticesEdges (const MeshId &face_id, int vert_index[4], int edge_index[4], int edge_orientation[4]) const

int	GetEdgeMaster (int v1, int v2) const

virtual void	GetBoundaryClosure (const Array< int > &bdr_attr_is_ess, Array< int > &bdr_vertices, Array< int > &bdr_edges)

Geometry::Type	GetElementGeometry (int index) const
	Return element geometry type. index is the Mesh element number. More...

Geometry::Type	GetFaceGeometry (int index) const
	Return face geometry type. index is the Mesh face number. More...

int	GetNumRootElements ()
	Return the number of root elements. More...

int	GetElementDepth (int i) const
	Return the distance of leaf 'i' from the root. More...

int	GetElementSizeReduction (int i) const

void	GetElementFacesAttributes (int i, Array< int > &faces, Array< int > &fattr) const
	Return the faces and face attributes of leaf element 'i'. More...

void	PrintVertexParents (std::ostream &out) const
	I/O: Print the "vertex_parents" section of the mesh file (ver. >= 1.1). More...

void	PrintCoarseElements (std::ostream &out) const
	I/O: Print the "coarse_elements" section of the mesh file (ver. >= 1.1). More...

void	LoadVertexParents (std::istream &input)

void	LoadCoarseElements (std::istream &input)
	I/O: Load the element refinement hierarchy from a mesh file. More...

void	SetVertexPositions (const Array< mfem::Vertex > &vertices)
	I/O: Set positions of all vertices (used by mesh loader). More...

virtual void	Trim ()
	Save memory by releasing all non-essential and cached data. More...

long	MemoryUsage () const
	Return total number of bytes allocated. More...

int	PrintMemoryDetail () const

void	PrintStats (std::ostream &out=mfem::out) const

void	DebugLeafOrder (std::ostream &out) const

void	DebugDump (std::ostream &out) const

Static Public Member Functions
static void	GridSfcOrdering2D (int width, int height, Array< int > &coords)

static void	GridSfcOrdering3D (int width, int height, int depth, Array< int > &coords)

Protected Types
typedef HashTable< Node >::iterator	node_iterator

typedef HashTable< Face >::iterator	face_iterator

typedef HashTable< Node > ::const_iterator	node_const_iterator

typedef HashTable< Face > ::const_iterator	face_const_iterator

typedef BlockArray< Element > ::iterator	elem_iterator

typedef std::map< std::string, int >	RefPathMap

Protected Member Functions
void	GetMeshComponents (Mesh &mesh) const
	Fill Mesh::{vertices,elements,boundary} for the current finest level. More...

virtual void	OnMeshUpdated (Mesh *mesh)

virtual void	Update ()

virtual void	UpdateVertices ()
	update Vertex::index and vertex_nodeId More...

void	CollectLeafElements (int elem, int state)

void	UpdateLeafElements ()

virtual void	AssignLeafIndices ()

void	InitRootState (int root_count)

virtual bool	IsGhost (const Element &el) const

virtual int	GetNumGhostElements () const

virtual int	GetNumGhostVertices () const

void	InitGeomFlags ()

bool	HavePrisms () const

bool	HaveTets () const

void	RefineElement (int elem, char ref_type)

void	DerefineElement (int elem)

int	AddElement (const Element &el)

void	FreeElement (int id)

int	NewHexahedron (int n0, int n1, int n2, int n3, int n4, int n5, int n6, int n7, int attr, int fattr0, int fattr1, int fattr2, int fattr3, int fattr4, int fattr5)

int	NewWedge (int n0, int n1, int n2, int n3, int n4, int n5, int attr, int fattr0, int fattr1, int fattr2, int fattr3, int fattr4)

int	NewTetrahedron (int n0, int n1, int n2, int n3, int attr, int fattr0, int fattr1, int fattr2, int fattr3)

int	NewQuadrilateral (int n0, int n1, int n2, int n3, int attr, int eattr0, int eattr1, int eattr2, int eattr3)

int	NewTriangle (int n0, int n1, int n2, int attr, int eattr0, int eattr1, int eattr2)

mfem::Element *	NewMeshElement (int geom) const

int	QuadFaceSplitType (int v1, int v2, int v3, int v4, int mid[5]=NULL) const

bool	TriFaceSplit (int v1, int v2, int v3, int mid[3]=NULL) const

void	ForceRefinement (int vn1, int vn2, int vn3, int vn4)

void	FindEdgeElements (int vn1, int vn2, int vn3, int vn4, Array< MeshId > &prisms) const

void	CheckAnisoPrism (int vn1, int vn2, int vn3, int vn4, const Refinement *refs, int nref)

void	CheckAnisoFace (int vn1, int vn2, int vn3, int vn4, int mid12, int mid34, int level=0)

void	CheckIsoFace (int vn1, int vn2, int vn3, int vn4, int en1, int en2, int en3, int en4, int midf)

void	ReparentNode (int node, int new_p1, int new_p2)

int	FindMidEdgeNode (int node1, int node2) const

int	GetMidEdgeNode (int node1, int node2)

int	GetMidFaceNode (int en1, int en2, int en3, int en4)

void	ReferenceElement (int elem)

void	UnreferenceElement (int elem, Array< int > &elemFaces)

Face *	GetFace (Element &elem, int face_no)

void	RegisterFaces (int elem, int *fattr=NULL)

void	DeleteUnusedFaces (const Array< int > &elemFaces)

void	CollectDerefinements (int elem, Array< Connection > &list)

int	RetrieveNode (const Element &el, int index)
	Return el.node[index] correctly, even if the element is refined. More...

int	FindNodeExt (const Element &el, int node, bool abort=true)
	Extended version of find_node: works if 'el' is refined. More...

int	ReorderFacePointMat (int v0, int v1, int v2, int v3, int elem, const PointMatrix &pm, PointMatrix &reordered) const

void	TraverseQuadFace (int vn0, int vn1, int vn2, int vn3, const PointMatrix &pm, int level, Face *eface[4], MatrixMap &matrix_map)

bool	TraverseTriFace (int vn0, int vn1, int vn2, const PointMatrix &pm, int level, MatrixMap &matrix_map)

void	TraverseTetEdge (int vn0, int vn1, const Point &p0, const Point &p1, MatrixMap &matrix_map)

void	TraverseEdge (int vn0, int vn1, double t0, double t1, int flags, int level, MatrixMap &matrix_map)

virtual void	BuildFaceList ()

virtual void	BuildEdgeList ()

virtual void	BuildVertexList ()

virtual void	ElementSharesFace (int elem, int local, int face)

virtual void	ElementSharesEdge (int elem, int local, int enode)

virtual void	ElementSharesVertex (int elem, int local, int vnode)

void	FindSetNeighbors (const Array< char > &elem_set, Array< int > neighbors, Array< char > neighbor_set=NULL)

void	FindNeighbors (int elem, Array< int > &neighbors, const Array< int > *search_set=NULL)

void	NeighborExpand (const Array< int > &elems, Array< int > &expanded, const Array< int > *search_set=NULL)

void	CollectEdgeVertices (int v0, int v1, Array< int > &indices)

void	CollectTriFaceVertices (int v0, int v1, int v2, Array< int > &indices)

void	CollectQuadFaceVertices (int v0, int v1, int v2, int v3, Array< int > &indices)

void	BuildElementToVertexTable ()

void	UpdateElementToVertexTable ()

int	GetVertexRootCoord (int elem, RefCoord coord[3]) const

void	CollectIncidentElements (int elem, const RefCoord coord[3], Array< int > &list) const

void	FindVertexCousins (int elem, int local, Array< int > &cousins) const

void	GetPointMatrix (Geometry::Type geom, const char *ref_path, DenseMatrix &matrix)

void	TraverseRefinements (int elem, int coarse_index, std::string &ref_path, RefPathMap &map)

void	InitDerefTransforms ()

void	SetDerefMatrixCodes (int parent, Array< int > &fine_coarse)

const double *	CalcVertexPos (int node) const

int	GetEdgeMaster (int node) const

void	FindFaceNodes (int face, int node[4])

int	EdgeSplitLevel (int vn1, int vn2) const

int	TriFaceSplitLevel (int vn1, int vn2, int vn3) const

void	QuadFaceSplitLevel (int vn1, int vn2, int vn3, int vn4, int &h_level, int &v_level) const

void	CountSplits (int elem, int splits[3]) const

void	GetLimitRefinements (Array< Refinement > &refinements, int max_level)

int	PrintElements (std::ostream &out, int elem, int &coarse_id) const

void	CopyElements (int elem, const BlockArray< Element > &tmp_elements, Array< int > &index_map)

Static Protected Member Functions
static int	find_node (const Element &el, int node)

static int	find_element_edge (const Element &el, int vn0, int vn1, bool abort=true)

static int	find_local_face (int geom, int a, int b, int c)

static const PointMatrix &	GetGeomIdentity (Geometry::Type geom)

Protected Attributes
int	Dim

int	spaceDim
	dimensions of the elements and the vertex coordinates More...

bool	Iso
	true if the mesh only contains isotropic refinements More...

int	Geoms
	bit mask of element geometries present, see InitGeomFlags() More...

HashTable< Node >	nodes

HashTable< Face >	faces

BlockArray< Element >	elements

Array< int >	free_element_ids

Array< int >	root_state

Array< double >	top_vertex_pos
	coordinates of top-level vertices (organized as triples) More...

int	NVertices

int	NEdges

int	NFaces

Array< int >	leaf_elements

Array< int >	vertex_nodeId

NCList	face_list
	lazy-initialized list of faces, see GetFaceList More...

NCList	edge_list
	lazy-initialized list of edges, see GetEdgeList More...

NCList	vertex_list
	lazy-initialized list of vertices, see GetVertexList More...

Array< int >	boundary_faces
	subset of all faces, set by BuildFaceList More...

Array< char >	face_geom
	face geometry by face index, set by OnMeshUpdated More...

Table	element_vertex
	leaf-element to vertex table, see FindSetNeighbors More...

Array< Refinement >	ref_stack
	stack of scheduled refinements (temporary) More...

HashTable< Node >	shadow
	temporary storage for reparented nodes More...

Array< Triple< int, int, int > >	reparents
	scheduled node reparents (tmp) More...

Table	derefinements
	possible derefinements, see GetDerefinementTable More...

CoarseFineTransformations	transforms
	storage for data returned by Get[De]RefinementTransforms() More...

Array< int >	coarse_elements
	state of leaf_elements before Refine(), set by MarkCoarseLevel() More...

TmpVertex *	tmp_vertex

Static Protected Attributes
static PointMatrix	pm_tri_identity

static PointMatrix	pm_quad_identity

static PointMatrix	pm_tet_identity

static PointMatrix	pm_prism_identity

static PointMatrix	pm_hex_identity

static GeomInfo	GI [Geometry::NumGeom]

Friends
class	Mesh

class	ParNCMesh

struct	MatrixMap

struct	PointMatrixHash

Detailed Description

A class for non-conforming AMR on higher-order hexahedral, prismatic, quadrilateral or triangular meshes.

The class is used as follows:

NCMesh is constructed from elements of an existing Mesh. The elements are copied and become roots of the refinement hierarchy.
Some elements are refined with the Refine() method. Both isotropic and anisotropic refinements of quads/hexes are supported.
A new Mesh is created from NCMesh containing the leaf elements. This new mesh may have non-conforming (hanging) edges and faces.
FiniteElementSpace asks NCMesh for a list of conforming, master and slave edges/faces and creates the conforming interpolation matrix P.
A continuous/conforming solution is obtained by solving P'*A*P x = P'*b.
Repeat from step 2.

Definition at line 102 of file ncmesh.hpp.

Member Typedef Documentation

typedef BlockArray<Element>::iterator mfem::NCMesh::elem_iterator

protected

Definition at line 483 of file ncmesh.hpp.

typedef HashTable<Face>::const_iterator mfem::NCMesh::face_const_iterator

protected

Definition at line 482 of file ncmesh.hpp.

typedef HashTable<Face>::iterator mfem::NCMesh::face_iterator

protected

Definition at line 480 of file ncmesh.hpp.

typedef HashTable<Node>::const_iterator mfem::NCMesh::node_const_iterator

protected

Definition at line 481 of file ncmesh.hpp.

typedef HashTable<Node>::iterator mfem::NCMesh::node_iterator

protected

Definition at line 479 of file ncmesh.hpp.

typedef int64_t mfem::NCMesh::RefCoord

Definition at line 371 of file ncmesh.hpp.

typedef std::map<std::string, int> mfem::NCMesh::RefPathMap

protected

Definition at line 806 of file ncmesh.hpp.

Constructor & Destructor Documentation

mfem::NCMesh::NCMesh	(	const Mesh *	mesh,
		std::istream *	vertex_parents = `NULL`
	)

explicit

Initialize with elements from 'mesh'. If an already nonconforming mesh is being loaded, 'vertex_parents' must point to a stream at the appropriate section of the mesh file which contains the vertex hierarchy.

Definition at line 72 of file ncmesh.cpp.

mfem::NCMesh::NCMesh ( const NCMesh & other )

Definition at line 197 of file ncmesh.cpp.

mfem::NCMesh::~NCMesh ( )

virtual

Definition at line 234 of file ncmesh.cpp.

Member Function Documentation

int mfem::NCMesh::AddElement ( const Element & el )

inlineprotected

Definition at line 545 of file ncmesh.hpp.

void mfem::NCMesh::AssignLeafIndices ( )

protectedvirtual

Reimplemented in mfem::ParNCMesh.

Definition at line 1927 of file ncmesh.cpp.

void mfem::NCMesh::BuildEdgeList ( )

protectedvirtual

Reimplemented in mfem::ParNCMesh.

Definition at line 2742 of file ncmesh.cpp.

void mfem::NCMesh::BuildElementToVertexTable ( )

protected

Definition at line 3063 of file ncmesh.cpp.

void mfem::NCMesh::BuildFaceList ( )

protectedvirtual

Reimplemented in mfem::ParNCMesh.

Definition at line 2622 of file ncmesh.cpp.

void mfem::NCMesh::BuildVertexList ( )

protectedvirtual

Reimplemented in mfem::ParNCMesh.

Definition at line 2848 of file ncmesh.cpp.

const double * mfem::NCMesh::CalcVertexPos ( int node ) const

protected

Definition at line 2013 of file ncmesh.cpp.

void mfem::NCMesh::CheckAnisoFace	(	int	vn1,
		int	vn2,
		int	vn3,
		int	vn4,
		int	mid12,
		int	mid34,
		int	level = `0`
	)

protected

Definition at line 756 of file ncmesh.cpp.

void mfem::NCMesh::CheckAnisoPrism	(	int	vn1,
		int	vn2,
		int	vn3,
		int	vn4,
		const Refinement *	refs,
		int	nref
	)

protected

Definition at line 731 of file ncmesh.cpp.

void mfem::NCMesh::CheckDerefinementNCLevel	(	const Table &	deref_table,
		Array< int > &	level_ok,
		int	max_nc_level
	)

virtual

Check derefinements returned by GetDerefinementTable and mark those that can be done safely so that the maximum NC level condition is not violated. On return, level_ok.Size() == deref_table.Size() and contains 0/1s.

Reimplemented in mfem::ParNCMesh.

Definition at line 1757 of file ncmesh.cpp.

void mfem::NCMesh::CheckIsoFace	(	int	vn1,
		int	vn2,
		int	vn3,
		int	vn4,
		int	en1,
		int	en2,
		int	en3,
		int	en4,
		int	midf
	)

protected

Definition at line 851 of file ncmesh.cpp.

void mfem::NCMesh::ClearTransforms ( )

Free all internal data created by the above three functions.

Definition at line 4233 of file ncmesh.cpp.

void mfem::NCMesh::CollectDerefinements	(	int	elem,
		Array< Connection > &	list
	)

protected

Definition at line 1709 of file ncmesh.cpp.

void mfem::NCMesh::CollectEdgeVertices	(	int	v0,
		int	v1,
		Array< int > &	indices
	)

protected

Definition at line 2993 of file ncmesh.cpp.

void mfem::NCMesh::CollectIncidentElements	(	int	elem,
		const RefCoord	coord[3],
		Array< int > &	list
	)		const

protected

Definition at line 3444 of file ncmesh.cpp.

void mfem::NCMesh::CollectLeafElements	(	int	elem,
		int	state
	)

protected

Definition at line 1874 of file ncmesh.cpp.

void mfem::NCMesh::CollectQuadFaceVertices	(	int	v0,
		int	v1,
		int	v2,
		int	v3,
		Array< int > &	indices
	)

protected

Definition at line 3029 of file ncmesh.cpp.

void mfem::NCMesh::CollectTriFaceVertices	(	int	v0,
		int	v1,
		int	v2,
		Array< int > &	indices
	)

protected

Definition at line 3005 of file ncmesh.cpp.

void mfem::NCMesh::CopyElements	(	int	elem,
		const BlockArray< Element > &	tmp_elements,
		Array< int > &	index_map
	)

protected

Definition at line 5071 of file ncmesh.cpp.

void mfem::NCMesh::CountSplits	(	int	elem,
		int	splits[3]
	)		const

protected

Definition at line 4833 of file ncmesh.cpp.

void mfem::NCMesh::DebugDump ( std::ostream & out ) const

Definition at line 5351 of file ncmesh.cpp.

void mfem::NCMesh::DebugLeafOrder ( std::ostream & out ) const

Definition at line 5326 of file ncmesh.cpp.

void mfem::NCMesh::DeleteUnusedFaces ( const Array< int > & elemFaces )

protected

Definition at line 400 of file ncmesh.cpp.

void mfem::NCMesh::Derefine ( const Array< int > & derefs )

virtual

Perform a subset of the possible derefinements (see GetDerefinementTable). Note that if anisotropic refinements are present in the mesh, some of the derefinements may have to be skipped to preserve mesh consistency.

Reimplemented in mfem::ParNCMesh.

Definition at line 1786 of file ncmesh.cpp.

void mfem::NCMesh::DerefineElement ( int elem )

protected

Definition at line 1583 of file ncmesh.cpp.

int mfem::NCMesh::Dimension ( ) const

inline

Definition at line 114 of file ncmesh.hpp.

int mfem::NCMesh::EdgeSplitLevel	(	int	vn1,
		int	vn2
	)		const

protected

Definition at line 4782 of file ncmesh.cpp.

virtual void mfem::NCMesh::ElementSharesEdge	(	int	elem,
		int	local,
		int	enode
	)

inlineprotectedvirtual

Reimplemented in mfem::ParNCMesh.

Definition at line 655 of file ncmesh.hpp.

virtual void mfem::NCMesh::ElementSharesFace	(	int	elem,
		int	local,
		int	face
	)

inlineprotectedvirtual

Reimplemented in mfem::ParNCMesh.

Definition at line 654 of file ncmesh.hpp.

virtual void mfem::NCMesh::ElementSharesVertex	(	int	elem,
		int	local,
		int	vnode
	)

inlineprotectedvirtual

Reimplemented in mfem::ParNCMesh.

Definition at line 656 of file ncmesh.hpp.

int mfem::NCMesh::find_element_edge	(	const Element &	el,
		int	vn0,
		int	vn1,
		bool	abort = `true`
	)

staticprotected

Definition at line 2280 of file ncmesh.cpp.

int mfem::NCMesh::find_local_face	(	int	geom,
		int	a,
		int	b,
		int	c
	)

staticprotected

Definition at line 2298 of file ncmesh.cpp.

int mfem::NCMesh::find_node	(	const Element &	el,
		int	node
	)

staticprotected

Definition at line 2260 of file ncmesh.cpp.

void mfem::NCMesh::FindEdgeElements	(	int	vn1,
		int	vn2,
		int	vn3,
		int	vn4,
		Array< MeshId > &	prisms
	)		const

protected

Definition at line 684 of file ncmesh.cpp.

void mfem::NCMesh::FindFaceNodes	(	int	face,
		int	node[4]
	)

protected

Definition at line 4685 of file ncmesh.cpp.

int mfem::NCMesh::FindMidEdgeNode	(	int	node1,
		int	node2
	)		const

protected

Definition at line 281 of file ncmesh.cpp.

void mfem::NCMesh::FindNeighbors	(	int	elem,
		Array< int > &	neighbors,
		const Array< int > *	search_set = `NULL`
	)

protected

Return all vertex-, edge- and face-neighbors of a single element. You can limit the number of elements being checked using 'search_set'. The complexity of the function is linear in the size of the search set.

Definition at line 3246 of file ncmesh.cpp.

int mfem::NCMesh::FindNodeExt	(	const Element &	el,
		int	node,
		bool	abort = `true`
	)

protected

Extended version of find_node: works if 'el' is refined.

Definition at line 2270 of file ncmesh.cpp.

void mfem::NCMesh::FindSetNeighbors	(	const Array< char > &	elem_set,
		Array< int > *	neighbors,
		Array< char > *	neighbor_set = `NULL`
	)

protected

Return all vertex-, edge- and face-neighbors of a set of elements. The neighbors are returned as a list (neighbors != NULL), as a set (neighbor_set != NULL), or both. The sizes of the set arrays must match that of leaf_elements. The function is intended to be used for large sets of elements and its complexity is linear in the number of leaf elements in the mesh.

Definition at line 3143 of file ncmesh.cpp.

void mfem::NCMesh::FindVertexCousins	(	int	elem,
		int	local,
		Array< int > &	cousins
	)		const

protected

Return elements neighboring to a local vertex of element 'elem'. Only elements from within the same refinement tree ('cousins') are returned. Complexity is proportional to the depth of elem's refinement tree.

Definition at line 3467 of file ncmesh.cpp.

void mfem::NCMesh::ForceRefinement	(	int	vn1,
		int	vn2,
		int	vn3,
		int	vn4
	)

protected

Definition at line 626 of file ncmesh.cpp.

void mfem::NCMesh::FreeElement ( int id )

inlineprotected

Definition at line 556 of file ncmesh.hpp.

void mfem::NCMesh::GetBoundaryClosure	(	const Array< int > &	bdr_attr_is_ess,
		Array< int > &	bdr_vertices,
		Array< int > &	bdr_edges
	)

virtual

Get a list of vertices (2D/3D) and edges (3D) that coincide with boundary elements with the specified attributes (marked in 'bdr_attr_is_ess'). In 3D this function also reveals "hidden" boundary edges. In parallel it helps identifying boundary vertices/edges affected by non-local boundary elements.

Reimplemented in mfem::ParNCMesh.

Definition at line 4709 of file ncmesh.cpp.

const Table & mfem::NCMesh::GetDerefinementTable ( )

Return a list of derefinement opportunities. Each row of the table contains Mesh indices of existing elements that can be derefined to form a single new coarse element. Row numbers are then passed to Derefine. This function works both in serial and parallel.

Definition at line 1742 of file ncmesh.cpp.

const CoarseFineTransformations & mfem::NCMesh::GetDerefinementTransforms ( )

After derefinement, calculate the relations of previous fine elements (some of which may no longer exist) to the current leaf elements. Unlike for refinement, Derefine() may only be called once before this function so there is no MarkFineLevel().

Definition at line 4060 of file ncmesh.cpp.

const NCList& mfem::NCMesh::GetEdgeList ( )

inline

Return the current list of conforming and nonconforming edges.

Definition at line 225 of file ncmesh.hpp.

int mfem::NCMesh::GetEdgeMaster	(	int	v1,
		int	v2
	)		const

Given an edge (by its vertex indices v1 and v2) return the first (geometric) parent edge that exists in the Mesh or -1 if there is no such parent.

Definition at line 4629 of file ncmesh.cpp.

int mfem::NCMesh::GetEdgeMaster ( int node ) const

protected

Definition at line 4597 of file ncmesh.cpp.

int mfem::NCMesh::GetEdgeNCOrientation ( const MeshId & edge_id ) const

Return "NC" orientation of an edge. As opposed to standard Mesh edge orientation based on vertex IDs, "NC" edge orientation follows the local edge orientation within the element 'edge_id.element' and is thus processor independent. TODO: this seems only partially true?

Definition at line 4547 of file ncmesh.cpp.

void mfem::NCMesh::GetEdgeVertices	(	const MeshId &	edge_id,
		int	vert_index[2],
		bool	oriented = `true`
	)		const

Return Mesh vertex indices of an edge identified by 'edge_id'.

Definition at line 4528 of file ncmesh.cpp.

int mfem::NCMesh::GetElementDepth ( int i ) const

Return the distance of leaf 'i' from the root.

Definition at line 4638 of file ncmesh.cpp.

void mfem::NCMesh::GetElementFacesAttributes	(	int	i,
		Array< int > &	faces,
		Array< int > &	fattr
	)		const

Return the faces and face attributes of leaf element 'i'.

Definition at line 4664 of file ncmesh.cpp.

Geometry::Type mfem::NCMesh::GetElementGeometry ( int index ) const

inline

Return element geometry type. index is the Mesh element number.

Definition at line 323 of file ncmesh.hpp.

int mfem::NCMesh::GetElementSizeReduction ( int i ) const

Return the size reduction compared to the root element (ignoring local stretching and curvature).

Definition at line 4650 of file ncmesh.cpp.

NCMesh::Face * mfem::NCMesh::GetFace	(	Element &	elem,
		int	face_no
	)

protected

Definition at line 425 of file ncmesh.cpp.

Geometry::Type mfem::NCMesh::GetFaceGeometry ( int index ) const

inline

Return face geometry type. index is the Mesh face number.

Definition at line 327 of file ncmesh.hpp.

const NCList& mfem::NCMesh::GetFaceList ( )

inline

Return the current list of conforming and nonconforming faces.

Definition at line 218 of file ncmesh.hpp.

int mfem::NCMesh::GetFaceVerticesEdges	(	const MeshId &	face_id,
		int	vert_index[4],
		int	edge_index[4],
		int	edge_orientation[4]
	)		const

Return Mesh vertex and edge indices of a face identified by 'face_id'. The return value is the number of face vertices.

Definition at line 4559 of file ncmesh.cpp.

const NCMesh::PointMatrix & mfem::NCMesh::GetGeomIdentity ( Geometry::Type geom )

staticprotected

Definition at line 3528 of file ncmesh.cpp.

void mfem::NCMesh::GetLimitRefinements	(	Array< Refinement > &	refinements,
		int	max_level
	)

protected

Definition at line 4916 of file ncmesh.cpp.

void mfem::NCMesh::GetMeshComponents ( Mesh & mesh ) const

protected

Fill Mesh::{vertices,elements,boundary} for the current finest level.

Definition at line 2042 of file ncmesh.cpp.

int mfem::NCMesh::GetMidEdgeNode	(	int	node1,
		int	node2
	)

protected

Definition at line 297 of file ncmesh.cpp.

int mfem::NCMesh::GetMidFaceNode	(	int	en1,
		int	en2,
		int	en3,
		int	en4
	)

protected

Definition at line 304 of file ncmesh.cpp.

const NCList& mfem::NCMesh::GetNCList ( int entity )

inline

Return vertex/edge/face list (entity = 0/1/2, respectively).

Definition at line 240 of file ncmesh.hpp.

int mfem::NCMesh::GetNEdges ( ) const

inline

Definition at line 118 of file ncmesh.hpp.

int mfem::NCMesh::GetNFaces ( void ) const

inline

Definition at line 119 of file ncmesh.hpp.

virtual int mfem::NCMesh::GetNumGhostElements ( ) const

inlineprotectedvirtual

Reimplemented in mfem::ParNCMesh.

Definition at line 525 of file ncmesh.hpp.

virtual int mfem::NCMesh::GetNumGhostVertices ( ) const

inlineprotectedvirtual

Reimplemented in mfem::ParNCMesh.

Definition at line 526 of file ncmesh.hpp.

int mfem::NCMesh::GetNumRootElements ( )

inline

Return the number of root elements.

Definition at line 331 of file ncmesh.hpp.

int mfem::NCMesh::GetNVertices ( ) const

inline

Definition at line 117 of file ncmesh.hpp.

void mfem::NCMesh::GetPointMatrix	(	Geometry::Type	geom,
		const char *	ref_path,
		DenseMatrix &	matrix
	)

protected

Definition at line 3543 of file ncmesh.cpp.

const CoarseFineTransformations & mfem::NCMesh::GetRefinementTransforms ( )

After refinement, calculate the relation of each fine element to its parent coarse element. Note that Refine() or LimitNCLevel() can be called multiple times between MarkCoarseLevel() and this function.

Definition at line 4009 of file ncmesh.cpp.

const NCList& mfem::NCMesh::GetVertexList ( )

inline

Return a list of vertices (in 'conforming'); this function is provided for uniformity/completeness. Needed in ParNCMesh/ParFESpace.

Definition at line 233 of file ncmesh.hpp.

int mfem::NCMesh::GetVertexRootCoord	(	int	elem,
		RefCoord	coord[3]
	)		const

protected

Definition at line 3396 of file ncmesh.cpp.

void mfem::NCMesh::GridSfcOrdering2D	(	int	width,
		int	height,
		Array< int > &	coords
	)

static

Return a space filling curve for a rectangular grid of elements. Implemented is a generalized Hilbert curve for arbitrary grid dimensions. If the width is odd, height should be odd too, otherwise one diagonal (vertex-neighbor) step cannot be avoided in the curve. Even dimensions are recommended.

Definition at line 4481 of file ncmesh.cpp.

void mfem::NCMesh::GridSfcOrdering3D	(	int	width,
		int	height,
		int	depth,
		Array< int > &	coords
	)

static

Return a space filling curve for a 3D rectangular grid of elements. The Hilbert-curve-like algorithm works well for even dimensions. For odd width/height/depth it tends to produce some diagonal (edge-neighbor) steps. Even dimensions are recommended.

Definition at line 4496 of file ncmesh.cpp.

bool mfem::NCMesh::HavePrisms ( ) const

inlineprotected

Definition at line 530 of file ncmesh.hpp.

bool mfem::NCMesh::HaveTets ( ) const

inlineprotected

Definition at line 531 of file ncmesh.hpp.

void mfem::NCMesh::InitDerefTransforms ( )

protected

Definition at line 1822 of file ncmesh.cpp.

void mfem::NCMesh::InitGeomFlags ( )

protected

Definition at line 213 of file ncmesh.cpp.

void mfem::NCMesh::InitRootState ( int root_count )

protected

Try to find a space-filling curve friendly orientation of the root elements: set 'root_state' based on the ordering of coarse elements. Note that the coarse mesh itself must be ordered as an SFC by e.g. Mesh::GetGeckoElementOrdering.

Definition at line 1936 of file ncmesh.cpp.

virtual bool mfem::NCMesh::IsGhost ( const Element & el ) const

inlineprotectedvirtual

Reimplemented in mfem::ParNCMesh.

Definition at line 524 of file ncmesh.hpp.

void mfem::NCMesh::LimitNCLevel ( int max_nc_level )

virtual

Check the mesh and potentially refine some elements so that the maximum difference of refinement levels between adjacent elements is not greater than 'max_nc_level'.

Reimplemented in mfem::ParNCMesh.

Definition at line 4946 of file ncmesh.cpp.

void mfem::NCMesh::LoadCoarseElements ( std::istream & input )

I/O: Load the element refinement hierarchy from a mesh file.

Definition at line 5091 of file ncmesh.cpp.

void mfem::NCMesh::LoadVertexParents ( std::istream & input )

I/O: Load the vertex parent hierarchy from a mesh file. NOTE: called indirectly through the constructor.

Definition at line 4988 of file ncmesh.cpp.

void mfem::NCMesh::MarkCoarseLevel ( )

Remember the current layer of leaf elements before the mesh is refined. Needed by GetRefinementTransforms(), must be called before Refine().

Definition at line 3963 of file ncmesh.cpp.

long mfem::NCMesh::MemoryUsage ( ) const

Return total number of bytes allocated.

Definition at line 5224 of file ncmesh.cpp.

void mfem::NCMesh::NeighborExpand	(	const Array< int > &	elems,
		Array< int > &	expanded,
		const Array< int > *	search_set = `NULL`
	)

protected

Expand a set of elements by all vertex-, edge- and face-neighbors. The output array 'expanded' will contain all items from 'elems' (provided they are in 'search_set') plus their neighbors. The neighbor search can be limited to the optional search set. The complexity is linear in the sum of the sizes of 'elems' and 'search_set'.

Definition at line 3329 of file ncmesh.cpp.

int mfem::NCMesh::NewHexahedron	(	int	n0,
		int	n1,
		int	n2,
		int	n3,
		int	n4,
		int	n5,
		int	n6,
		int	n7,
		int	attr,
		int	fattr0,
		int	fattr1,
		int	fattr2,
		int	fattr3,
		int	fattr4,
		int	fattr5
	)

protected

Definition at line 462 of file ncmesh.cpp.

mfem::Element * mfem::NCMesh::NewMeshElement ( int geom ) const

protected

Definition at line 1999 of file ncmesh.cpp.

int mfem::NCMesh::NewQuadrilateral	(	int	n0,
		int	n1,
		int	n2,
		int	n3,
		int	attr,
		int	eattr0,
		int	eattr1,
		int	eattr2,
		int	eattr3
	)

protected

Definition at line 550 of file ncmesh.cpp.

int mfem::NCMesh::NewTetrahedron	(	int	n0,
		int	n1,
		int	n2,
		int	n3,
		int	attr,
		int	fattr0,
		int	fattr1,
		int	fattr2,
		int	fattr3
	)

protected

Definition at line 524 of file ncmesh.cpp.

int mfem::NCMesh::NewTriangle	(	int	n0,
		int	n1,
		int	n2,
		int	attr,
		int	eattr0,
		int	eattr1,
		int	eattr2
	)

protected

Definition at line 576 of file ncmesh.cpp.

int mfem::NCMesh::NewWedge	(	int	n0,
		int	n1,
		int	n2,
		int	n3,
		int	n4,
		int	n5,
		int	attr,
		int	fattr0,
		int	fattr1,
		int	fattr2,
		int	fattr3,
		int	fattr4
	)

protected

Definition at line 492 of file ncmesh.cpp.

void mfem::NCMesh::OnMeshUpdated ( Mesh * mesh )

protectedvirtual

Get edge and face numbering from 'mesh' (i.e., set all Edge::index and Face::index) after a new mesh was created from us.

Reimplemented in mfem::ParNCMesh.

Definition at line 2130 of file ncmesh.cpp.

void mfem::NCMesh::PrintCoarseElements ( std::ostream & out ) const

I/O: Print the "coarse_elements" section of the mesh file (ver. >= 1.1).

Definition at line 5057 of file ncmesh.cpp.

int mfem::NCMesh::PrintElements	(	std::ostream &	out,
		int	elem,
		int &	coarse_id
	)		const

protected

Definition at line 5031 of file ncmesh.cpp.

int mfem::NCMesh::PrintMemoryDetail ( ) const

Definition at line 5246 of file ncmesh.cpp.

void mfem::NCMesh::PrintStats ( std::ostream & out = mfem::out ) const

Definition at line 5272 of file ncmesh.cpp.

void mfem::NCMesh::PrintVertexParents ( std::ostream & out ) const

I/O: Print the "vertex_parents" section of the mesh file (ver. >= 1.1).

Definition at line 4961 of file ncmesh.cpp.

void mfem::NCMesh::QuadFaceSplitLevel	(	int	vn1,
		int	vn2,
		int	vn3,
		int	vn4,
		int &	h_level,
		int &	v_level
	)		const

protected

Definition at line 4806 of file ncmesh.cpp.

int mfem::NCMesh::QuadFaceSplitType	(	int	v1,
		int	v2,
		int	v3,
		int	v4,
		int	mid[5] = `NULL`
	)		const

protected

Definition at line 2196 of file ncmesh.cpp.

void mfem::NCMesh::ReferenceElement ( int elem )

protected

Definition at line 312 of file ncmesh.cpp.

void mfem::NCMesh::Refine ( const Array< Refinement > & refinements )

virtual

Perform the given batch of refinements. Please note that in the presence of anisotropic splits additional refinements may be necessary to keep the mesh consistent. However, the function always performs at least the requested refinements.

Reimplemented in mfem::ParNCMesh.

Definition at line 1501 of file ncmesh.cpp.

void mfem::NCMesh::RefineElement	(	int	elem,
		char	ref_type
	)

protected

Definition at line 868 of file ncmesh.cpp.

void mfem::NCMesh::RegisterFaces	(	int	elem,
		int *	fattr = `NULL`
	)

protected

Definition at line 386 of file ncmesh.cpp.

int mfem::NCMesh::ReorderFacePointMat	(	int	v0,
		int	v1,
		int	v2,
		int	v3,
		int	elem,
		const PointMatrix &	pm,
		PointMatrix &	reordered
	)		const

protected

Definition at line 2376 of file ncmesh.cpp.

void mfem::NCMesh::ReparentNode	(	int	node,
		int	new_p1,
		int	new_p2
	)

protected

Definition at line 265 of file ncmesh.cpp.

int mfem::NCMesh::RetrieveNode	(	const Element &	el,
		int	index
	)

protected

Return el.node[index] correctly, even if the element is refined.

Definition at line 1547 of file ncmesh.cpp.

void mfem::NCMesh::SetDerefMatrixCodes	(	int	parent,
		Array< int > &	fine_coarse
	)

protected

Definition at line 1837 of file ncmesh.cpp.

void mfem::NCMesh::SetVertexPositions ( const Array< mfem::Vertex > & vertices )

I/O: Set positions of all vertices (used by mesh loader).

Definition at line 5010 of file ncmesh.cpp.

int mfem::NCMesh::SpaceDimension ( ) const

inline

Definition at line 115 of file ncmesh.hpp.

void mfem::NCMesh::TraverseEdge	(	int	vn0,
		int	vn1,
		double	t0,
		double	t1,
		int	flags,
		int	level,
		MatrixMap &	matrix_map
	)

protected

Definition at line 2714 of file ncmesh.cpp.

void mfem::NCMesh::TraverseQuadFace	(	int	vn0,
		int	vn1,
		int	vn2,
		int	vn3,
		const PointMatrix &	pm,
		int	level,
		Face *	eface[4],
		MatrixMap &	matrix_map
	)

protected

Definition at line 2407 of file ncmesh.cpp.

void mfem::NCMesh::TraverseRefinements	(	int	elem,
		int	coarse_index,
		std::string &	ref_path,
		RefPathMap &	map
	)

protected

Definition at line 3977 of file ncmesh.cpp.

void mfem::NCMesh::TraverseTetEdge	(	int	vn0,
		int	vn1,
		const Point &	p0,
		const Point &	p1,
		MatrixMap &	matrix_map
	)

protected

Definition at line 2526 of file ncmesh.cpp.

bool mfem::NCMesh::TraverseTriFace	(	int	vn0,
		int	vn1,
		int	vn2,
		const PointMatrix &	pm,
		int	level,
		MatrixMap &	matrix_map
	)

protected

Definition at line 2563 of file ncmesh.cpp.

bool mfem::NCMesh::TriFaceSplit	(	int	v1,
		int	v2,
		int	v3,
		int	mid[3] = `NULL`
	)		const

protected

Definition at line 2243 of file ncmesh.cpp.

int mfem::NCMesh::TriFaceSplitLevel	(	int	vn1,
		int	vn2,
		int	vn3
	)		const

protected

Definition at line 4789 of file ncmesh.cpp.

void mfem::NCMesh::Trim ( )

virtual

Save memory by releasing all non-essential and cached data.

Reimplemented in mfem::ParNCMesh.

Definition at line 5184 of file ncmesh.cpp.

void mfem::NCMesh::UnreferenceElement	(	int	elem,
		Array< int > &	elemFaces
	)

protected

Definition at line 343 of file ncmesh.cpp.

void mfem::NCMesh::Update ( )

protectedvirtual

Apart from the primary data structure, which is the element/node/face hierarchy, there is secondary data that is derived from the primary data and needs to be updated when the primary data changes. Update() takes care of that and needs to be called after refinement and derefinement.

Reimplemented in mfem::ParNCMesh.

Definition at line 222 of file ncmesh.cpp.

void mfem::NCMesh::UpdateElementToVertexTable ( )

inlineprotected

Definition at line 694 of file ncmesh.hpp.

void mfem::NCMesh::UpdateLeafElements ( )

protected

Definition at line 1916 of file ncmesh.cpp.

void mfem::NCMesh::UpdateVertices ( )

protectedvirtual

update Vertex::index and vertex_nodeId

Reimplemented in mfem::ParNCMesh.

Definition at line 1856 of file ncmesh.cpp.

Friends And Related Function Documentation

friend struct MatrixMap

friend

Definition at line 878 of file ncmesh.hpp.

friend class Mesh

friend

Definition at line 376 of file ncmesh.hpp.

friend class ParNCMesh

friend

Definition at line 877 of file ncmesh.hpp.

friend struct PointMatrixHash

friend

Definition at line 879 of file ncmesh.hpp.

Member Data Documentation

Array<int> mfem::NCMesh::boundary_faces

protected

subset of all faces, set by BuildFaceList

Definition at line 505 of file ncmesh.hpp.

Array<int> mfem::NCMesh::coarse_elements

protected

state of leaf_elements before Refine(), set by MarkCoarseLevel()

Definition at line 815 of file ncmesh.hpp.

Table mfem::NCMesh::derefinements

protected

possible derefinements, see GetDerefinementTable

Definition at line 540 of file ncmesh.hpp.

int mfem::NCMesh::Dim

protected

Definition at line 388 of file ncmesh.hpp.

NCList mfem::NCMesh::edge_list

protected

lazy-initialized list of edges, see GetEdgeList

Definition at line 502 of file ncmesh.hpp.

Table mfem::NCMesh::element_vertex

protected

leaf-element to vertex table, see FindSetNeighbors

Definition at line 508 of file ncmesh.hpp.

BlockArray<Element> mfem::NCMesh::elements

protected

Definition at line 468 of file ncmesh.hpp.

Array<char> mfem::NCMesh::face_geom

protected

face geometry by face index, set by OnMeshUpdated

Definition at line 506 of file ncmesh.hpp.

NCList mfem::NCMesh::face_list

protected

lazy-initialized list of faces, see GetFaceList

Definition at line 501 of file ncmesh.hpp.

HashTable<Face> mfem::NCMesh::faces

protected

Definition at line 466 of file ncmesh.hpp.

Array<int> mfem::NCMesh::free_element_ids

protected

Definition at line 469 of file ncmesh.hpp.

int mfem::NCMesh::Geoms

protected

bit mask of element geometries present, see InitGeomFlags()

Definition at line 390 of file ncmesh.hpp.

NCMesh::GeomInfo mfem::NCMesh::GI

staticprotected

Definition at line 869 of file ncmesh.hpp.

bool mfem::NCMesh::Iso

protected

true if the mesh only contains isotropic refinements

Definition at line 389 of file ncmesh.hpp.

Array<int> mfem::NCMesh::leaf_elements

protected

Definition at line 498 of file ncmesh.hpp.

int mfem::NCMesh::NEdges

protected

Definition at line 496 of file ncmesh.hpp.

int mfem::NCMesh::NFaces

protected

Definition at line 496 of file ncmesh.hpp.

HashTable<Node> mfem::NCMesh::nodes

protected

Definition at line 465 of file ncmesh.hpp.

int mfem::NCMesh::NVertices

protected

Definition at line 495 of file ncmesh.hpp.

NCMesh::PointMatrix mfem::NCMesh::pm_hex_identity

staticprotected

Definition at line 799 of file ncmesh.hpp.

NCMesh::PointMatrix mfem::NCMesh::pm_prism_identity

staticprotected

Definition at line 798 of file ncmesh.hpp.

NCMesh::PointMatrix mfem::NCMesh::pm_quad_identity

staticprotected

Definition at line 796 of file ncmesh.hpp.

NCMesh::PointMatrix mfem::NCMesh::pm_tet_identity

staticprotected

Definition at line 797 of file ncmesh.hpp.

NCMesh::PointMatrix mfem::NCMesh::pm_tri_identity

staticprotected

Definition at line 795 of file ncmesh.hpp.

Array<Refinement> mfem::NCMesh::ref_stack

protected

stack of scheduled refinements (temporary)

Definition at line 536 of file ncmesh.hpp.

Array<Triple<int, int, int> > mfem::NCMesh::reparents

protected

scheduled node reparents (tmp)

Definition at line 538 of file ncmesh.hpp.

Array<int> mfem::NCMesh::root_state

protected

Initial traversal state (~ element orientation) for each root element NOTE: M = root_state.Size() is the number of root elements. NOTE: the first M items of 'elements' is the coarse mesh.

Definition at line 474 of file ncmesh.hpp.

HashTable<Node> mfem::NCMesh::shadow

protected

temporary storage for reparented nodes

Definition at line 537 of file ncmesh.hpp.

int mfem::NCMesh::spaceDim

protected

dimensions of the elements and the vertex coordinates

Definition at line 388 of file ncmesh.hpp.

TmpVertex* mfem::NCMesh::tmp_vertex

mutableprotected

Definition at line 830 of file ncmesh.hpp.

Array<double> mfem::NCMesh::top_vertex_pos

protected

coordinates of top-level vertices (organized as triples)

Definition at line 477 of file ncmesh.hpp.

CoarseFineTransformations mfem::NCMesh::transforms

protected

storage for data returned by Get[De]RefinementTransforms()

Definition at line 812 of file ncmesh.hpp.

NCList mfem::NCMesh::vertex_list

protected

lazy-initialized list of vertices, see GetVertexList

Definition at line 503 of file ncmesh.hpp.

Array<int> mfem::NCMesh::vertex_nodeId

protected

Definition at line 499 of file ncmesh.hpp.

The documentation for this class was generated from the following files:

mesh/ncmesh.hpp
mesh/ncmesh.cpp

Classes

Public Types

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Static Protected Attributes

Friends

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation