'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< label >
typedef SubList< label >	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< label >
constexpr	List () noexcept
	Default construct. More...

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

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

	List (const label len, const Foam::zero)
	Construct with given size initializing all elements to zero. More...

	List (const Foam::one, const label &val)
	Construct with length=1, copying the value as the only content. More...

	List (const Foam::one, label &&val)
	Construct with length=1, moving the value as the only content. More...

	List (const Foam::one, const Foam::zero)
	Construct with length=1, initializing content to zero. More...

	List (const List< label > &a)
	Copy construct from list. More...

	List (const UList< label > &a)
	Copy construct contents from list. More...

	List (List< label > &a, bool reuse)
	Construct as copy or re-use as specified. More...

	List (const UList< label > &list, const labelUList &indices)
	Copy construct subset of list. More...

	List (const UList< label > &list, const FixedList< label, N > &indices)
	Copy construct subset of list. More...

	List (const FixedList< label, N > &list)
	Construct as copy of FixedList<T, N> More...

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

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

	List (const IndirectListBase< label, Addr > &list)
	Construct as copy of IndirectList contents. More...

	List (std::initializer_list< label > list)
	Construct from an initializer list. More...

	List (List< label > &&list)
	Move construct from List. More...

	List (DynamicList< label, SizeMin > &&list)
	Move construct from DynamicList. More...

	List (SortableList< label > &&list)
	Move construct from SortableList. More...

	List (SLList< label > &&list)
	Move construct from SLList. More...

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

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

	~List ()
	Destructor. More...

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

void	resize (const label len)
	Adjust allocated size of list. More...

void	resize (const label len, const label &val)
	Adjust allocated size of list and set val for new elements. More...

void	resize (const label newLen)

void	resize_nocopy (const label len)
	Adjust allocated size of list without necessarily. More...

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

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

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

void	append (label &&val)
	Move append an element at the end of the list. More...

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

void	append (const IndirectListBase< label, Addr > &list)
	Append IndirectList contents at the end of this list. More...

label	appendUniq (const label &val)
	Append an element if not already in the list. More...

void	transfer (List< label > &list)

void	transfer (DynamicList< label, SizeMin > &list)

void	transfer (SortableList< label > &list)

label &	newElmt (const label i)

void	operator= (const UList< label > &a)
	Assignment to UList operator. Takes linear time. More...

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

void	operator= (const SLList< label > &list)
	Assignment to SLList operator. Takes linear time. More...

void	operator= (const IndirectListBase< label, Addr > &list)
	Assignment from IndirectList. Takes linear time. More...

void	operator= (const FixedList< label, N > &list)
	Copy assignment from FixedList. More...

void	operator= (std::initializer_list< label > list)
	Assignment to an initializer list. More...

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

void	operator= (const Foam::zero)
	Assignment of all entries to zero. More...

void	operator= (List< label > &&list)
	Move assignment. Takes constant time. More...

void	operator= (DynamicList< label, SizeMin > &&list)
	Move assignment. Takes constant time. More...

void	operator= (SortableList< label > &&list)
	Move assignment. Takes constant time. More...

void	operator= (SLList< label > &&list)
	Move assignment. Takes constant time. More...

Istream &	readList (Istream &is)
	Read List from Istream, discarding contents of existing List. More...

Istream &	readList (Istream &is)

Istream &	readList (Istream &is)

void	shallowCopy (const UList< label > &)=delete
	No shallowCopy permitted. More...

std::enable_if< std::is_same< bool, TypeT >::value, bool >::type	set (const label i, bool val=true)
	A bitSet::set() method for a list of bool. More...

Additional Inherited Members
Static Public Member Functions inherited from List< label >
static const List< label > &	null ()
	Return a null List. 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 117 of file cellClassification.H.

Member Enumeration Documentation

◆ cType

enum cType

Type of cell.

Enumerator
NOTSET
INSIDE
OUTSIDE
CUT

Definition at line 127 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 138 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

◆ ClassName()

ClassName ( "cellClassification" )

◆ mesh()

const polyMesh& mesh ( ) const

inline

Definition at line 220 of file cellClassification.H.

◆ 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().

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

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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 Foam::endl(), pFaces, and Foam::Pout.

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◆ writeStats()

void writeStats ( Ostream & os ) const

Write statistics on cell types to Ostream.

Definition at line 871 of file cellClassification.C.

References Foam::BitOps::count(), Foam::endl(), and os().

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◆ operator=()

void operator= ( const cellClassification & rhs )

Definition at line 883 of file cellClassification.C.

References List< T >::operator=().

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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

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

◆ ClassName()

◆ mesh()

◆ trimCutCells()

◆ growSurface()

◆ fillHangingCells()

◆ fillRegionEdges()

◆ fillRegionPoints()

◆ writeStats()

◆ operator=()