'Cuts' a mesh with a surface. More...

Inheritance diagram for cellClassification:

Collaboration diagram for cellClassification:

Public Types
enum	cType { NOTSET, INSIDE, OUTSIDE, CUT }
	Type of cell. More...

enum	pointStatus { UNSET, MESH, NONMESH, MIXED }
	Enumeration defining the whether points are use by cells of. More...

Public Types inherited from List
typedef SubList< T >	subList
	Declare type of subList. More...

Public Member Functions
	ClassName ("cellClassification")

	cellClassification (const polyMesh &mesh, const meshSearch &meshQuery, const triSurfaceSearch &surfQuery, const pointField &outsidePoints)
	Construct from mesh and surface and point(s) on outside. More...

	cellClassification (const polyMesh &mesh, const labelList &cellType)
	Construct from mesh and type for every cell. More...

	cellClassification (const cellClassification &)
	Construct as copy. More...

const polyMesh &	mesh () const

label	trimCutCells (const label nLayers, const label meshType, const label fillType)

label	growSurface (const label meshType, const label fillType)
	Sets vertex neighbours of meshType cells to fillType. More...

label	fillHangingCells (const label meshType, const label fillType, const label maxIter)
	Find hanging cells (cells with all points on outside) and set their. More...

label	fillRegionEdges (const label meshType, const label fillType, const label maxIter)
	Find regionEdges and fill one neighbour. Iterate until nothing. More...

label	fillRegionPoints (const label meshType, const label fillType, const label maxIter)
	Find regionPoints and fill all neighbours. Iterate until nothing. More...

void	writeStats (Ostream &os) const
	Write statistics on cell types to Ostream. More...

void	operator= (const cellClassification &)

Public Member Functions inherited from List
	List ()
	Null constructor. More...

	List (const label)
	Construct with given size. More...

	List (const label, const T &)
	Construct with given size and value for all elements. More...

	List (const List< T > &)
	Copy constructor. More...

	List (const Xfer< List< T > > &)
	Construct by transferring the parameter contents. More...

	List (List< T > &, bool reUse)
	Construct as copy or re-use as specified. More...

	List (const UList< T > &, const labelUList &mapAddressing)
	Construct as subset. More...

template<class InputIterator >
	List (InputIterator first, InputIterator last)
	Construct given start and end iterators. More...

template<unsigned Size>
	List (const FixedList< T, Size > &)
	Construct as copy of FixedList<T, Size> More...

	List (const PtrList< T > &)
	Construct as copy of PtrList<T> More...

	List (const SLList< T > &)
	Construct as copy of SLList<T> More...

	List (const UIndirectList< T > &)
	Construct as copy of UIndirectList<T> More...

	List (const BiIndirectList< T > &)
	Construct as copy of BiIndirectList<T> More...

	List (Istream &)
	Construct from Istream. More...

autoPtr< List< T > >	clone () const
	Clone. More...

	~List ()
	Destructor. More...

label	size () const
	Return the number of elements in the UList. More...

void	resize (const label)
	Alias for setSize(const label) More...

void	resize (const label, const T &)
	Alias for setSize(const label, const T&) More...

void	setSize (const label)
	Reset size of List. More...

void	setSize (const label, const T &)
	Reset size of List and value for new elements. More...

void	clear ()
	Clear the list, i.e. set size to zero. More...

void	append (const T &)
	Append an element at the end of the list. More...

void	append (const UList< T > &)
	Append a List at the end of this list. More...

void	append (const UIndirectList< T > &)
	Append a UIndirectList at the end of this list. More...

void	transfer (List< T > &)
	Transfer the contents of the argument List into this list. More...

template<unsigned SizeInc, unsigned SizeMult, unsigned SizeDiv>
void	transfer (DynamicList< T, SizeInc, SizeMult, SizeDiv > &)
	Transfer the contents of the argument List into this list. More...

void	transfer (SortableList< T > &)
	Transfer the contents of the argument List into this list. More...

Xfer< List< T > >	xfer ()
	Transfer contents to the Xfer container. More...

T &	newElmt (const label)
	Return subscript-checked element of UList. More...

void	operator= (const UList< T > &)
	Assignment from UList operator. Takes linear time. More...

void	operator= (const List< T > &)
	Assignment operator. Takes linear time. More...

void	operator= (const SLList< T > &)
	Assignment from SLList operator. Takes linear time. More...

void	operator= (const UIndirectList< T > &)
	Assignment from UIndirectList operator. Takes linear time. More...

void	operator= (const BiIndirectList< T > &)
	Assignment from BiIndirectList operator. Takes linear time. More...

void	operator= (const T &)
	Assignment of all entries to the given value. More...

template<class T >
	List (const label s)

template<class T >
	List (const label s, const T &a)

template<class T >
	List (const List< T > &a)

template<class T >
	List (const Xfer< List< T > > &lst)

template<class T >
	List (List< T > &a, bool reUse)

template<class T >
	List (const UList< T > &a, const labelUList &map)

template<class T >
	List (const PtrList< T > &lst)

template<class T >
	List (const SLList< T > &lst)

template<class T >
	List (const UIndirectList< T > &lst)

template<class T >
	List (const BiIndirectList< T > &lst)

template<class T >
void	transfer (List< T > &a)

template<class T >
void	transfer (SortableList< T > &a)

template<class T >
	List ()

template<class T >
	List (Istream &is)

Private Member Functions
boolList	markFaces (const triSurfaceSearch &) const
	Mark all faces intersected by or intersecting surface. More...

void	markCells (const meshSearch &queryMesh, const boolList &piercedFace, const pointField &outsidePts)
	Divide cells into cut/inside/outside by using MeshWave from cut. More...

void	classifyPoints (const label meshType, const labelList &cellType, List< pointStatus > &pointSide) const
	Use cell status to classify points as being internal to meshType,. More...

bool	usesMixedPointsOnly (const List< pointStatus > &, const label cellI) const
	Return true if cell uses only points with status=mixed. More...

void	getMeshOutside (const label meshType, faceList &, labelList &) const
	Get faces (and its 'owner') inbetween cells of differing type. More...

Static Private Member Functions
static label	count (const labelList &elems, const label elem)
	Count number of occurrences of elem in list. More...

Private Attributes
const polyMesh &	mesh_
	Reference to mesh. More...

Additional Inherited Members
Static Public Member Functions inherited from List
static const List< T > &	null ()
	Return a null List. More...

Protected Member Functions inherited from List
void	size (const label)
	Override size to be inconsistent with allocated storage. More...

Detailed Description

'Cuts' a mesh with a surface.

Divides cells into three types

cut, i.e. any of the edges of the cell is split or any edge of the surface pierces any of the faces of the cell.
outside: cell can be reached by Meshwave from any of the supplied outside points (without crossing any cut cell)
inside: all other.

Used in various meshing programs.

Has various utility functions to deal with 'features' on this level where the mesh still has all inside and outside cells.

Concepts

point classification:
- point used by meshType cells only
- point used by non-meshType cells only
- point used by both types ('mixed')
hanging cells: meshType cells using mixed points only. These cells would have all their vertices on the surface when extracting the meshType cells.
regionEdges: edges where the cells using it are of mixed type. Or more precise when walking around the edge and looking at the different types of the cells there are more than two regions with same type.

Seen from above:

Ok:
     A | A
       |
     --+---
       |
     B | B

Not ok:
     A | B
       |
    ---+---
       |
     B | A

because this latter situation would cause the surface after subsetting type A or B to be multiply connected across this edge. And also when snapping the edge end points to the surface it might cause some twisted faces if the surface is normal to the edge (and smoothing the surface would not help since the points on the edge would be 'pulled' from two different sides)

regionPoints: like regionEdges but now for points. Points where subsetting the mesh would cause a multiply connected outside surface (connected across point, not edge)

Source files

Definition at line 115 of file cellClassification.H.

Member Enumeration Documentation

◆ cType

enum cType

Type of cell.

Enumerator
NOTSET
INSIDE
OUTSIDE
CUT

Definition at line 125 of file cellClassification.H.

◆ pointStatus

enum pointStatus

Enumeration defining the whether points are use by cells of.

a certain type.

Enumerator
UNSET
MESH
NONMESH
MIXED

Definition at line 136 of file cellClassification.H.

Constructor & Destructor Documentation

◆ cellClassification() [1/3]

cellClassification	(	const polyMesh &	mesh,
		const meshSearch &	meshQuery,
		const triSurfaceSearch &	surfQuery,
		const pointField &	outsidePoints
	)

Construct from mesh and surface and point(s) on outside.

Definition at line 482 of file cellClassification.C.

◆ cellClassification() [2/3]

cellClassification	(	const polyMesh &	mesh,
		const labelList &	cellType
	)

Construct from mesh and type for every cell.

Used to be able to reuse filling routines below.

Definition at line 503 of file cellClassification.C.

References Foam::abort(), Foam::FatalError, and FatalErrorInFunction.

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◆ cellClassification() [3/3]

cellClassification ( const cellClassification & cType )

Construct as copy.

Definition at line 521 of file cellClassification.C.

Member Function Documentation

◆ count()

Foam::label count	(	const labelList &	elems,
		const label	elem
	)

staticprivate

Count number of occurrences of elem in list.

Definition at line 51 of file cellClassification.C.

References forAll.

◆ markFaces()

Foam::boolList markFaces ( const triSurfaceSearch & search ) const

private

Mark all faces intersected by or intersecting surface.

Definition at line 76 of file cellClassification.C.

References boundBox::avgDim(), Foam::constant::electromagnetic::e, PrimitivePatch< Face, FaceList, PointField, PointType >::edges(), Foam::endl(), indexedOctree::findLine(), forAll, PointIndexHit< Point >::hit(), PointIndexHit< Point >::hitPoint(), PointIndexHit< Point >::index(), PrimitivePatch< Face, FaceList, PointField, PointType >::localPoints(), Foam::mag(), boundBox::max(), boundBox::min(), Foam::Pout, indexedOctree::shapes(), triSurfaceSearch::surface(), triSurfaceSearch::tree(), Vector< Cmpt >::x(), Vector< Cmpt >::y(), and Vector< Cmpt >::z().

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◆ markCells()

void markCells	(	const meshSearch &	queryMesh,
		const boolList &	piercedFace,
		const pointField &	outsidePts
	)

private

Divide cells into cut/inside/outside by using MeshWave from cut.

faces. No check is done on whether outsidePts are in different domains.

Definition at line 248 of file cellClassification.C.

References MeshWave< Type, TrackingData >::allCellInfo(), Foam::exit(), Foam::FatalError, FatalErrorInFunction, meshSearch::findCell(), forAll, HashSet< Key, Hash >::insert(), Foam::nl, Foam::returnReduce(), List::size(), and HashTable::toc().

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◆ classifyPoints()

void classifyPoints	(	const label	meshType,
		const labelList &	cellType,
		List< pointStatus > &	pointSide
	)		const

private

Use cell status to classify points as being internal to meshType,.

internal to non-meshType or on border of both.

Definition at line 349 of file cellClassification.C.

References forAll, MESH, List::setSize(), and Foam::type().

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◆ usesMixedPointsOnly()

bool usesMixedPointsOnly	(	const List< pointStatus > &	pointSide,
		const label	cellI
	)		const

private

Return true if cell uses only points with status=mixed.

Definition at line 399 of file cellClassification.C.

References f(), and forAll.

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◆ getMeshOutside()

void getMeshOutside	(	const label	meshType,
		faceList &	outsideFaces,
		labelList &	outsideOwner
	)		const

private

Get faces (and its 'owner') inbetween cells of differing type.

(meshType and non-meshType).

Definition at line 427 of file cellClassification.C.

References List::setSize().

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◆ ClassName()

ClassName ( "cellClassification" )

◆ mesh()

const polyMesh& mesh ( ) const

inline

Definition at line 218 of file cellClassification.H.

References cellClassification::mesh_.

◆ trimCutCells()

Foam::label trimCutCells	(	const label	nLayers,
		const label	meshType,
		const label	fillType
	)

Definition at line 534 of file cellClassification.C.

References cellClassification::CUT, forAll, and Foam::type().

Referenced by surfaceSets::getSurfaceSets().

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◆ growSurface()

Foam::label growSurface	(	const label	meshType,
		const label	fillType
	)

Sets vertex neighbours of meshType cells to fillType.

Definition at line 620 of file cellClassification.C.

References forAll, and Foam::type().

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◆ fillHangingCells()

Foam::label fillHangingCells	(	const label	meshType,
		const label	fillType,
		const label	maxIter
	)

Find hanging cells (cells with all points on outside) and set their.

type to fillType. Iterate until nothing changed. Returns total number of cells changed (in all iterations)

Definition at line 677 of file cellClassification.C.

References Foam::endl(), forAll, and Foam::Pout.

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◆ fillRegionEdges()

Foam::label fillRegionEdges	(	const label	meshType,
		const label	fillType,
		const label	maxIter
	)

Find regionEdges and fill one neighbour. Iterate until nothing.

changes. Returns total number of cells changed.

Definition at line 734 of file cellClassification.C.

References PrimitivePatch< Face, FaceList, PointField, PointType >::edgeFaces(), Foam::endl(), forAll, Foam::Pout, and List::size().

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◆ fillRegionPoints()

Foam::label fillRegionPoints	(	const label	meshType,
		const label	fillType,
		const label	maxIter
	)

Find regionPoints and fill all neighbours. Iterate until nothing.

changes. Returns total number of cells changed.

Definition at line 803 of file cellClassification.C.

References PrimitivePatch< Face, FaceList, PointField, PointType >::checkPointManifold(), Foam::endl(), forAll, forAllConstIter(), PrimitivePatch< Face, FaceList, PointField, PointType >::meshPointMap(), pFaces, PrimitivePatch< Face, FaceList, PointField, PointType >::pointFaces(), and Foam::Pout.

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◆ writeStats()

void writeStats ( Ostream & os ) const

Write statistics on cell types to Ostream.

Definition at line 872 of file cellClassification.C.

References Foam::endl().

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◆ operator=()

void operator= ( const cellClassification & rhs )

Definition at line 884 of file cellClassification.C.

References List::operator=().

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Field Documentation

◆ mesh_

const polyMesh& mesh_

private

Reference to mesh.

Definition at line 149 of file cellClassification.H.

Referenced by cellClassification::mesh().

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

src/meshTools/cellClassification/cellClassification.H
src/meshTools/cellClassification/cellClassification.C

Public Types

Public Member Functions

Private Member Functions

Static Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ cType

◆ pointStatus

Constructor & Destructor Documentation

◆ cellClassification() [1/3]

◆ cellClassification() [2/3]

◆ cellClassification() [3/3]

Member Function Documentation

◆ count()

◆ markFaces()

◆ markCells()

◆ classifyPoints()

◆ usesMixedPointsOnly()

◆ getMeshOutside()

◆ ClassName()

◆ mesh()

◆ trimCutCells()

◆ growSurface()

◆ fillHangingCells()

◆ fillRegionEdges()

◆ fillRegionPoints()

◆ writeStats()

◆ operator=()

Field Documentation

◆ mesh_