face Class Reference

A face is a list of labels corresponding to mesh vertices. More...

Inheritance diagram for face:
Collaboration diagram for face:

Public Types

enum  proxType { NONE , POINT , EDGE }
 Return types for classify. More...
 
- Public Types inherited from List< label >
typedef SubList< labelsubList
 Declare type of subList. More...
 
- Public Types inherited from UList< label >
typedef label value_type
 Type of values the UList contains. More...
 
typedef labelreference
 Type that can be used for storing into. More...
 
typedef const labelconst_reference
 Type that can be used for storing into. More...
 
typedef label difference_type
 The type that can represent the difference between any two. More...
 
typedef label size_type
 The type that can represent the size of a UList. More...
 
typedef labeliterator
 Random access iterator for traversing UList. More...
 
typedef const labelconst_iterator
 Random access iterator for traversing UList. More...
 
typedef std::reverse_iterator< iteratorreverse_iterator
 Reverse iterator for reverse traversal of UList. More...
 
typedef std::reverse_iterator< const_iteratorconst_reverse_iterator
 Reverse iterator for reverse traversal of constant UList. More...
 

Public Member Functions

 face ()
 Construct null. More...
 
 face (label)
 Construct given size. More...
 
 face (const labelUList &)
 Construct from list of labels. More...
 
 face (const labelList &)
 Construct from list of labels. More...
 
 face (labelList &&)
 Construct by transferring the parameter contents. More...
 
 face (const triFace &)
 Copy construct from triFace. More...
 
 face (Istream &)
 Construct from Istream. More...
 
label collapse ()
 Collapse face by removing duplicate point labels. More...
 
void flip ()
 Flip the face in-place. More...
 
pointField points (const pointField &) const
 Return the points corresponding to this face. More...
 
point centre (const pointField &) const
 Centre point of face. More...
 
template<class Type >
Type average (const pointField &, const Field< Type > &) const
 Calculate average value at centroid of face. More...
 
vector area (const pointField &) const
 Return vector area. More...
 
scalar mag (const pointField &) const
 Return scalar magnitude. More...
 
vector normal (const pointField &) const
 Return unit normal. More...
 
face reverseFace () const
 Return face with reverse direction. More...
 
label which (const label globalIndex) const
 Navigation through face vertices. More...
 
label nextLabel (const label i) const
 Next vertex on face. More...
 
label prevLabel (const label i) const
 Previous vertex on face. More...
 
scalar sweptVol (const pointField &oldPoints, const pointField &newPoints) const
 Return the volume swept out by the face when its points move. More...
 
tensor inertia (const pointField &, const point &refPt=vector::zero, scalar density=1.0) const
 Return the inertia tensor, with optional reference. More...
 
pointHit ray (const point &p, const vector &n, const pointField &, const intersection::algorithm alg=intersection::algorithm::fullRay, const intersection::direction dir=intersection::direction::vector) const
 Return potential intersection with face with a ray starting. More...
 
pointHit intersection (const point &p, const vector &q, const point &ctr, const pointField &, const intersection::algorithm alg, const scalar tol=0.0) const
 Fast intersection with a ray. More...
 
pointHit nearestPoint (const point &p, const pointField &) const
 Return nearest point to face. More...
 
pointHit nearestPointClassify (const point &p, const pointField &, label &nearType, label &nearLabel) const
 Return nearest point to face and classify it: More...
 
scalar contactSphereDiameter (const point &p, const vector &n, const pointField &) const
 Return contact sphere diameter. More...
 
scalar areaInContact (const pointField &, const scalarField &v) const
 Return area in contact, given the displacement in vertices. More...
 
label nEdges () const
 Return number of edges. More...
 
edgeList edges () const
 Return edges in face point ordering,. More...
 
edge faceEdge (const label n) const
 Return n-th face edge. More...
 
int edgeDirection (const edge &) const
 Return the edge direction on the face. More...
 
label nTriangles () const
 Size of the face's triangulation. More...
 
void operator= (labelList &&)
 Move assignment labelList. More...
 
template<class PointField >
Foam::vector area (const PointField &ps)
 
template<class PointField >
Foam::point centre (const PointField &ps)
 
template<class PointField >
Foam::Tuple2< Foam::vector, Foam::pointareaAndCentre (const PointField &ps)
 
template<class PointField >
Foam::Tuple2< Foam::vector, Foam::pointareaAndCentreStabilised (const PointField &ps)
 
- Public Member Functions inherited from List< label >
 List ()
 Null constructor. More...
 
 List (const label)
 Construct with given size. More...
 
 List (const label, const label &)
 Construct with given size and value for all elements. More...
 
 List (const label, const zero)
 Construct with given size initialising all elements to zero. More...
 
 List (const List< label > &)
 Copy constructor. More...
 
 List (const UList< T2 > &)
 Copy constructor from list containing another type. More...
 
 List (List< label > &&)
 Move constructor. More...
 
 List (List< label > &, bool reuse)
 Construct as copy or reuse as specified. More...
 
 List (const UList< label > &, const labelUList &mapAddressing)
 Construct as subset. More...
 
 List (InputIterator first, InputIterator last)
 Construct given start and end iterators. More...
 
 List (const FixedList< label, Size > &)
 Construct as copy of FixedList<T, Size> More...
 
 List (const PtrList< label > &)
 Construct as copy of PtrList<T> More...
 
 List (const SLList< label > &)
 Construct as copy of SLList<T> More...
 
 List (const UIndirectList< label > &)
 Construct as copy of UIndirectList<T> More...
 
 List (const BiIndirectList< label > &)
 Construct as copy of BiIndirectList<T> More...
 
 List (std::initializer_list< label >)
 Construct from an initialiser list. More...
 
 List (Istream &)
 Construct from Istream. More...
 
label size () const
 Return the number of elements in the UList. More...
 
autoPtr< List< label > > clone () const
 Clone. More...
 
 ~List ()
 Destructor. More...
 
void resize (const label)
 Alias for setSize(const label) More...
 
void resize (const label, const label &)
 Alias for setSize(const label, const T&) More...
 
void setSize (const label)
 Reset size of List. More...
 
void setSize (const label, const label &)
 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 label &)
 Append an element at the end of the list. More...
 
void append (const UList< label > &)
 Append a List at the end of this list. More...
 
void append (const UIndirectList< label > &)
 Append a UIndirectList at the end of this list. More...
 
void transfer (List< label > &)
 Transfer the contents of the argument List into this list. More...
 
void transfer (DynamicList< label, SizeInc, SizeMult, SizeDiv > &)
 Transfer the contents of the argument List into this list. More...
 
void transfer (SortableList< label > &)
 Transfer the contents of the argument List into this list. More...
 
labelnewElmt (const label)
 Return subscript-checked element of UList. More...
 
void shallowCopy (const UList< label > &)=delete
 Disallow implicit shallowCopy. More...
 
void operator= (const UList< label > &)
 Assignment to UList operator. Takes linear time. More...
 
void operator= (const List< label > &)
 Assignment operator. Takes linear time. More...
 
void operator= (List< label > &&)
 Move assignment operator. More...
 
void operator= (const SLList< label > &)
 Assignment to SLList operator. Takes linear time. More...
 
void operator= (const UIndirectList< label > &)
 Assignment to UIndirectList operator. Takes linear time. More...
 
void operator= (const BiIndirectList< label > &)
 Assignment to BiIndirectList operator. Takes linear time. More...
 
void operator= (std::initializer_list< label >)
 Assignment to an initialiser list. More...
 
void operator= (const label &)
 Assignment of all entries to the given value. More...
 
void operator= (const zero)
 Assignment of all entries to zero. More...
 
- Public Member Functions inherited from UList< label >
void operator= (const label &)
 Assignment of all entries to the given value. More...
 
void operator= (const zero)
 Assignment of all entries to zero. More...
 
 UList ()
 Null constructor. More...
 
 UList (label *__restrict__ v, label size)
 Construct from components. More...
 
 UList (const UList< label > &)=default
 Copy construct. More...
 
label fcIndex (const label i) const
 Return the forward circular index, i.e. the next index. More...
 
label rcIndex (const label i) const
 Return the reverse circular index, i.e. the previous index. More...
 
std::streamsize byteSize () const
 Return the binary size in number of characters of the UList. More...
 
const labelcdata () const
 Return a const pointer to the first data element,. More...
 
labeldata ()
 Return a pointer to the first data element,. More...
 
labelfirst ()
 Return the first element of the list. More...
 
const labelfirst () const
 Return first element of the list. More...
 
labellast ()
 Return the last element of the list. More...
 
const labellast () const
 Return the last element of the list. More...
 
void checkStart (const label start) const
 Check start is within valid range (0 ... size-1) More...
 
void checkSize (const label size) const
 Check size is within valid range (0 ... size) More...
 
void checkIndex (const label i) const
 Check index i is within valid range (0 ... size-1) More...
 
void shallowCopy (const UList< label > &)
 Copy the pointer held by the given UList. More...
 
void deepCopy (const UList< label > &)
 Copy elements of the given UList. More...
 
labeloperator[] (const label)
 Return element of UList. More...
 
const labeloperator[] (const label) const
 Return element of constant UList. More...
 
const bool & operator[] (const label i) const
 
 operator const Foam::List< label > & () const
 Allow cast to a const List<T>&. More...
 
iterator begin ()
 Return an iterator to begin traversing the UList. More...
 
const_iterator begin () const
 Return const_iterator to begin traversing the constant UList. More...
 
iterator end ()
 Return an iterator to end traversing the UList. More...
 
const_iterator end () const
 Return const_iterator to end traversing the constant UList. More...
 
const_iterator cbegin () const
 Return const_iterator to begin traversing the constant UList. More...
 
const_iterator cend () const
 Return const_iterator to end traversing the constant UList. More...
 
reverse_iterator rbegin ()
 Return reverse_iterator to begin reverse traversing the UList. More...
 
const_reverse_iterator rbegin () const
 Return const_reverse_iterator to begin reverse traversing the UList. More...
 
reverse_iterator rend ()
 Return reverse_iterator to end reverse traversing the UList. More...
 
const_reverse_iterator rend () const
 Return const_reverse_iterator to end reverse traversing the UList. More...
 
const_reverse_iterator crbegin () const
 Return const_reverse_iterator to begin reverse traversing the UList. More...
 
const_reverse_iterator crend () const
 Return const_reverse_iterator to end reverse traversing the UList. More...
 
label size () const
 Return the number of elements in the UList. More...
 
label max_size () const
 Return size of the largest possible UList. More...
 
bool empty () const
 Return true if the UList is empty (ie, size() is zero) More...
 
void swap (UList< label > &)
 Swap two ULists of the same type in constant time. More...
 
bool operator== (const UList< label > &) const
 Equality operation on ULists of the same type. More...
 
bool operator!= (const UList< label > &) const
 The opposite of the equality operation. Takes linear time. More...
 
bool operator< (const UList< label > &) const
 Compare two ULists lexicographically. Takes linear time. More...
 
bool operator> (const UList< label > &) const
 Compare two ULists lexicographically. Takes linear time. More...
 
bool operator<= (const UList< label > &) const
 Return true if !(a > b). Takes linear time. More...
 
bool operator>= (const UList< label > &) const
 Return true if !(a < b). Takes linear time. More...
 

Static Public Member Functions

template<class PointField >
static vector area (const PointField &ps)
 Return vector area given face points. More...
 
template<class PointField >
static vector centre (const PointField &ps)
 Return centre point given face points. More...
 
template<class PointField >
static Tuple2< vector, pointareaAndCentre (const PointField &)
 Return vector area and centre point given face points. More...
 
template<class PointField >
static Tuple2< vector, pointareaAndCentreStabilised (const PointField &)
 Return vector area and centre point given face points. Stabilised. More...
 
static int compare (const face &, const face &)
 Compare faces. More...
 
static bool sameVertices (const face &, const face &)
 Return true if the faces have the same vertices. More...
 
- Static Public Member Functions inherited from List< label >
static const List< label > & null ()
 Return a null List. More...
 
- Static Public Member Functions inherited from UList< label >
static const UList< label > & null ()
 Return a null UList. More...
 

Static Public Attributes

static const char *const typeName = "face"
 

Friends

bool operator== (const face &a, const face &b)
 
bool operator!= (const face &a, const face &b)
 
Istreamoperator>> (Istream &, face &)
 

Additional Inherited Members

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

Detailed Description

A face is a list of labels corresponding to mesh vertices.

See also
Foam::triFace
Source files

Definition at line 73 of file face.H.

Member Enumeration Documentation

◆ proxType

enum proxType

Return types for classify.

Enumerator
NONE 
POINT 
EDGE 

Definition at line 80 of file face.H.

Constructor & Destructor Documentation

◆ face() [1/7]

face ( )
inline

Construct null.

Definition at line 28 of file faceI.H.

Referenced by face::areaInContact().

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◆ face() [2/7]

face ( label  s)
inlineexplicit

Construct given size.

Definition at line 32 of file faceI.H.

◆ face() [3/7]

face ( const labelUList lst)
inlineexplicit

Construct from list of labels.

Definition at line 38 of file faceI.H.

◆ face() [4/7]

face ( const labelList lst)
inlineexplicit

Construct from list of labels.

Definition at line 44 of file faceI.H.

◆ face() [5/7]

face ( labelList &&  lst)
inlineexplicit

Construct by transferring the parameter contents.

Definition at line 50 of file faceI.H.

◆ face() [6/7]

face ( const triFace f)

Copy construct from triFace.

Definition at line 40 of file face.C.

◆ face() [7/7]

face ( Istream is)
inline

Construct from Istream.

Definition at line 56 of file faceI.H.

Member Function Documentation

◆ area() [1/3]

static vector area ( const PointField ps)
static

Return vector area given face points.

Referenced by face::contactSphereDiameter(), MPLICface::Sf(), intersection::srcBoxStatic(), and polygonTriangulate::triangulate().

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◆ centre() [1/3]

static vector centre ( const PointField ps)
static

Return centre point given face points.

Referenced by face::contactSphereDiameter().

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◆ areaAndCentre() [1/2]

static Tuple2<vector, point> areaAndCentre ( const PointField )
static

Return vector area and centre point given face points.

Referenced by primitiveMesh::makeFaceCentresAndAreas().

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◆ areaAndCentreStabilised() [1/2]

static Tuple2<vector, point> areaAndCentreStabilised ( const PointField )
static

Return vector area and centre point given face points. Stabilised.

version. More expensive, but less likely to generate wildly inaccurate face-centres on degenerate faces.

Referenced by intersection::part::part().

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◆ collapse()

Foam::label collapse ( )

Collapse face by removing duplicate point labels.

return the collapsed size

Definition at line 199 of file face.C.

References setSize().

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◆ flip()

void flip ( )

Flip the face in-place.

The starting points of the original and flipped face are identical.

Definition at line 224 of file face.C.

References n, and Foam::Swap().

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◆ points()

Foam::pointField points ( const pointField meshPoints) const
inline

Return the points corresponding to this face.

Definition at line 64 of file faceI.H.

References forAll, and p.

Referenced by face::ray().

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◆ centre() [2/3]

Foam::point centre ( const pointField ps) const

Centre point of face.

Definition at line 238 of file face.C.

◆ average()

Type average ( const pointField ps,
const Field< Type > &  fld 
) const

Calculate average value at centroid of face.

Definition at line 222 of file faceTemplates.C.

References f(), fld(), forAll, Foam::normalised(), p, Foam::constant::mathematical::pi(), and Foam::Zero.

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◆ area() [2/3]

Foam::vector area ( const pointField ps) const

Return vector area.

Definition at line 244 of file face.C.

◆ mag()

Foam::scalar mag ( const pointField points) const
inline

Return scalar magnitude.

Definition at line 81 of file faceI.H.

References Foam::mag(), and points.

Referenced by face::areaInContact(), and hexCellLooper::cut().

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◆ normal()

Foam::vector normal ( const pointField points) const

Return unit normal.

Definition at line 250 of file face.C.

References Foam::normalised(), and points.

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◆ reverseFace()

Foam::face reverseFace ( ) const

Return face with reverse direction.

The starting points of the original and reverse face are identical.

Definition at line 256 of file face.C.

References f(), and List< T >::size().

Referenced by perfectInterface::setRefinement(), createShellMesh::setRefinement(), and cellsToCells::trimLocalTgt().

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◆ which()

Foam::label which ( const label  globalIndex) const

Navigation through face vertices.

Which vertex on face (face index given a global index)

returns -1 if not found

Definition at line 275 of file face.C.

References f(), and forAll.

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◆ nextLabel()

Foam::label nextLabel ( const label  i) const
inline

Next vertex on face.

Definition at line 100 of file faceI.H.

Referenced by combineFaces::getOutsideFace().

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◆ prevLabel()

Foam::label prevLabel ( const label  i) const
inline

Previous vertex on face.

Definition at line 106 of file faceI.H.

◆ sweptVol()

Foam::scalar sweptVol ( const pointField oldPoints,
const pointField newPoints 
) const

Return the volume swept out by the face when its points move.

Definition at line 291 of file face.C.

References nPoints, and Foam::constant::mathematical::pi().

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◆ inertia()

Foam::tensor inertia ( const pointField p,
const point refPt = vector::zero,
scalar  density = 1.0 
) const

Return the inertia tensor, with optional reference.

point and density specification

Definition at line 370 of file face.C.

References forAll, p, and Foam::Zero.

◆ ray()

Foam::pointHit ray ( const point p,
const vector n,
const pointField meshPoints,
const intersection::algorithm  alg = intersection::algorithm::fullRay,
const intersection::direction  dir = intersection::direction::vector 
) const

Return potential intersection with face with a ray starting.

at p, direction n (does not need to be normalised) Does face-centre decomposition and returns triangle intersection point closest to p. Face-centre is calculated from point average. For a hit, the distance is signed. Positive number represents the point in front of triangle In case of miss the point is the nearest point on the face and the distance is the distance between the intersection point and the original point. The half-ray or full-ray intersection and the contact sphere adjustment of the projection vector is set by the intersection parameters

Definition at line 33 of file faceIntersection.C.

References Foam::average(), PointHit< Point >::distance(), PointHit< Point >::eligibleMiss(), f(), UList< label >::fcIndex(), PointHit< Point >::hit(), PointHit< Point >::hitPoint(), Foam::mag(), PointHit< Point >::missPoint(), n, nPoints, p, face::points(), PointHit< Point >::setDistance(), PointHit< Point >::setHit(), PointHit< Point >::setMiss(), PointHit< Point >::setPoint(), and List< label >::size().

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◆ intersection()

Foam::pointHit intersection ( const point p,
const vector q,
const point ctr,
const pointField meshPoints,
const intersection::algorithm  alg,
const scalar  tol = 0.0 
) const

Fast intersection with a ray.

Does face-centre decomposition and returns triangle intersection point closest to p. See triangle::intersection for details.

Definition at line 140 of file faceIntersection.C.

References PointHit< Point >::distance(), f(), forAll, PointHit< Point >::hit(), PointHit< Point >::hitPoint(), Foam::mag(), p, PointHit< Point >::setDistance(), PointHit< Point >::setHit(), and PointHit< Point >::setPoint().

Referenced by face::areaInContact().

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◆ nearestPoint()

Foam::pointHit nearestPoint ( const point p,
const pointField meshPoints 
) const

Return nearest point to face.

Definition at line 198 of file faceIntersection.C.

References p.

Referenced by wallFace::update().

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◆ nearestPointClassify()

Foam::pointHit nearestPointClassify ( const point p,
const pointField meshPoints,
label nearType,
label nearLabel 
) const

Return nearest point to face and classify it:

+ near point (nearType=POINT, nearLabel=0, 1, 2) + near edge (nearType=EDGE, nearLabel=0, 1, 2) Note: edges are counted from starting vertex so e.g. edge n is from f[n] to f[0], where the face has n + 1 points

Definition at line 212 of file faceIntersection.C.

References PointHit< Point >::distance(), triangle< Point, PointRef >::EDGE, f(), PointHit< Point >::hit(), PointHit< Point >::hitPoint(), Foam::mag(), PointHit< Point >::missPoint(), triangle< Point, PointRef >::nearestPointClassify(), nPoints, p, triangle< Point, PointRef >::POINT, PointHit< Point >::setDistance(), PointHit< Point >::setHit(), PointHit< Point >::setMiss(), PointHit< Point >::setPoint(), and List< T >::size().

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◆ contactSphereDiameter()

Foam::scalar contactSphereDiameter ( const point p,
const vector n,
const pointField meshPoints 
) const

Return contact sphere diameter.

Definition at line 33 of file faceContactSphere.C.

References face::area(), face::centre(), Foam::mag(), n, and p.

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◆ areaInContact()

Foam::scalar areaInContact ( const pointField meshPoints,
const scalarField v 
) const

Return area in contact, given the displacement in vertices.

Definition at line 32 of file faceAreaInContact.C.

References face::face(), forAll, face::intersection(), face::mag(), List< T >::setSize(), List< label >::size(), and List< T >::size().

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◆ nEdges()

Foam::label nEdges ( ) const
inline

Return number of edges.

Definition at line 87 of file faceI.H.

◆ edges()

Foam::edgeList edges ( ) const

Return edges in face point ordering,.

i.e. edges()[0] is edge between [0] and [1]

Definition at line 406 of file face.C.

References Foam::e, UList< T >::last(), points, and List< T >::size().

Referenced by Foam::polyMeshZipUpCells().

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◆ faceEdge()

Foam::edge faceEdge ( const label  n) const
inline

Return n-th face edge.

Definition at line 94 of file faceI.H.

References n.

◆ edgeDirection()

int edgeDirection ( const edge e) const

Return the edge direction on the face.

Returns:

  • 0: edge not found on the face
  • +1: forward (counter-clockwise) on the face
  • -1: reverse (clockwise) on the face

Definition at line 424 of file face.C.

References Foam::e, and forAll.

◆ nTriangles()

Foam::label nTriangles ( ) const
inline

Size of the face's triangulation.

Definition at line 112 of file faceI.H.

◆ compare()

int compare ( const face a,
const face b 
)
static

Compare faces.

0: different +1: identical -1: same face, but different orientation

Definition at line 48 of file face.C.

References CirculatorBase::anticlockwise, b, ConstCirculator< ContainerType >::circulate(), CirculatorBase::clockwise, ConstCirculator< ContainerType >::setFulcrumToIterator(), ConstCirculator< ContainerType >::setIteratorToFulcrum(), and List< T >::size().

Referenced by Foam::operator!=(), Foam::operator==(), and Foam::primitivePatchGetZones().

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◆ sameVertices()

bool sameVertices ( const face a,
const face b 
)
static

Return true if the faces have the same vertices.

Definition at line 150 of file face.C.

References b, forAll, and List< T >::size().

Referenced by blockFace::compare().

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◆ operator=()

void operator= ( labelList &&  l)
inline

Move assignment labelList.

Definition at line 120 of file faceI.H.

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

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◆ area() [3/3]

Foam::vector area ( const PointField ps)

Definition at line 32 of file faceTemplates.C.

References UList< T >::fcIndex(), forAll, p, Foam::constant::mathematical::pi(), List< T >::size(), and Foam::Zero.

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◆ centre() [3/3]

Foam::point centre ( const PointField ps)

Definition at line 69 of file faceTemplates.C.

◆ areaAndCentre() [2/2]

Foam::Tuple2<Foam::vector, Foam::point> areaAndCentre ( const PointField ps)

Definition at line 79 of file faceTemplates.C.

References Foam::constant::universal::c, UList< T >::fcIndex(), forAll, Foam::normalised(), p, Foam::constant::mathematical::pi(), List< T >::size(), and Foam::Zero.

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◆ areaAndCentreStabilised() [2/2]

Friends And Related Function Documentation

◆ operator==

bool operator== ( const face a,
const face b 
)
friend

◆ operator!=

bool operator!= ( const face a,
const face b 
)
friend

◆ operator>>

Istream& operator>> ( Istream ,
face  
)
friend

Member Data Documentation

◆ typeName

const char *const typeName = "face"
static

Definition at line 89 of file face.H.


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