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< T >
typedef SubList< TsubList
 Declare type of subList. More...
 
- Public Types inherited from UList< T >
typedef T value_type
 Type of values the UList contains. More...
 
typedef Treference
 Type that can be used for storing into. More...
 
typedef const Tconst_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 Titerator
 Random access iterator for traversing UList. More...
 
typedef const Tconst_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::point centre (const PointField &ps)
 
template<class PointField >
Foam::vector area (const PointField &ps)
 
- Public Member Functions inherited from List< T >
 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 label, const zero)
 Construct with given size initialising all elements to zero. More...
 
 List (const List< T > &)
 Copy constructor. More...
 
template<class T2 >
 List (const List< T2 > &)
 Copy constructor from list containing another type. More...
 
 List (List< T > &&)
 Move constructor. 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 (std::initializer_list< T >)
 Construct from an initialiser list. 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...
 
TnewElmt (const label)
 Return subscript-checked element of UList. More...
 
void shallowCopy (const UList< T > &)=delete
 Disallow implicit shallowCopy. More...
 
void operator= (const UList< T > &)
 Assignment to UList operator. Takes linear time. More...
 
void operator= (const List< T > &)
 Assignment operator. Takes linear time. More...
 
void operator= (List< T > &&)
 Move assignment operator. More...
 
void operator= (const SLList< T > &)
 Assignment to SLList operator. Takes linear time. More...
 
void operator= (const UIndirectList< T > &)
 Assignment to UIndirectList operator. Takes linear time. More...
 
void operator= (const BiIndirectList< T > &)
 Assignment to BiIndirectList operator. Takes linear time. More...
 
void operator= (std::initializer_list< T >)
 Assignment to an initialiser list. More...
 
void operator= (const T &)
 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< T >
 UList ()
 Null constructor. More...
 
 UList (T *__restrict__ v, label size)
 Construct from components. 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 Tcdata () const
 Return a const pointer to the first data element,. More...
 
Tdata ()
 Return a pointer to the first data element,. More...
 
Tfirst ()
 Return the first element of the list. More...
 
const Tfirst () const
 Return first element of the list. More...
 
Tlast ()
 Return the last element of the list. More...
 
const Tlast () 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< T > &)
 Copy the pointer held by the given UList. More...
 
void deepCopy (const UList< T > &)
 Copy elements of the given UList. More...
 
Toperator[] (const label)
 Return element of UList. More...
 
const Toperator[] (const label) const
 Return element of constant UList. More...
 
 operator const Foam::List< T > & () const
 Allow cast to a const List<T>&. More...
 
void operator= (const T &)
 Assignment of all entries to the given value. More...
 
void operator= (const zero)
 Assignment of all entries to zero. More...
 
iterator begin ()
 Return an iterator to begin traversing the UList. More...
 
iterator end ()
 Return an iterator to end traversing the 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...
 
const_iterator begin () const
 Return const_iterator to begin traversing the constant UList. More...
 
const_iterator end () const
 Return const_iterator to end traversing the constant UList. More...
 
reverse_iterator rbegin ()
 Return 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 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...
 
const_reverse_iterator rbegin () const
 Return const_reverse_iterator to begin reverse traversing the UList. More...
 
const_reverse_iterator rend () 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< T > &)
 Swap two ULists of the same type in constant time. More...
 
bool operator== (const UList< T > &) const
 Equality operation on ULists of the same type. More...
 
bool operator!= (const UList< T > &) const
 The opposite of the equality operation. Takes linear time. More...
 
bool operator< (const UList< T > &) const
 Compare two ULists lexicographically. Takes linear time. More...
 
bool operator> (const UList< T > &) const
 Compare two ULists lexicographically. Takes linear time. More...
 
bool operator<= (const UList< T > &) const
 Return true if !(a > b). Takes linear time. More...
 
bool operator>= (const UList< T > &) const
 Return true if !(a < b). Takes linear time. More...
 
template<>
const booloperator[] (const label i) const
 

Static Public Member Functions

template<class PointField >
static vector centre (const PointField &ps)
 Return centre point given face points. More...
 
template<class PointField >
static vector area (const PointField &ps)
 Return vector area given face points. 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< T >
static const List< T > & null ()
 Return a null List. More...
 
- Static Public Member Functions inherited from UList< T >
static const UList< T > & 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< T >
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 75 of file face.H.

Member Enumeration Documentation

◆ proxType

enum proxType

Return types for classify.

Enumerator
NONE 
POINT 
EDGE 

Definition at line 82 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::reverseFace().

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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

◆ centre() [1/3]

static vector centre ( const PointField ps)
static

◆ area() [1/3]

static vector area ( const PointField ps)
static

◆ collapse()

Foam::label collapse ( )

Collapse face by removing duplicate point labels.

return the collapsed size

Definition at line 199 of file face.C.

References UList< T >::operator[](), List< T >::setSize(), and List< T >::size().

Referenced by STARCD::readCells().

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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, List< T >::size(), and Foam::Swap().

Referenced by hexRef8::faceLevel().

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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, UList< T >::operator[](), p, and List< T >::size().

Referenced by face::edges(), coupledPolyPatch::initOrder(), and AMIMethod::writeIntersectionOBJ().

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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.

References face::centre().

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◆ average()

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

Calculate average value at centroid of face.

Definition at line 141 of file faceTemplates.C.

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

Referenced by face::area().

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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.

References face::area().

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◆ mag()

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

Return scalar magnitude.

Definition at line 81 of file faceI.H.

References face::area(), and Foam::mag().

Referenced by face::areaInContact(), edgeCollapser::checkMeshQuality(), faceAreaWeightAMI::interArea(), and listPlusEqOp< T >::operator()().

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◆ normal()

Foam::vector normal ( const pointField points) const

Return unit normal.

Definition at line 250 of file face.C.

References face::area(), and Foam::normalised().

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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(), face::face(), and List< T >::size().

Referenced by NamedEnum< compressibleField, 8 >::names(), ifEqEqOp< value >::operator()(), hexRef8::setInstance(), removeCells::setRefinement(), and createShellMesh::setRefinement().

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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(), forAll, and face::sweptVol().

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◆ nextLabel()

◆ prevLabel()

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

Previous vertex on face.

Definition at line 106 of file faceI.H.

References UList< T >::operator[](), and UList< T >::rcIndex().

Referenced by edgeCollapser::checkMeshQuality(), and tetDecomposer::setRefinement().

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◆ 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 292 of file face.C.

References face::centre(), face::inertia(), nPoints, Foam::constant::mathematical::pi(), and List< T >::size().

Referenced by face::which().

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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 371 of file face.C.

References face::centre(), UList< T >::fcIndex(), forAll, List< T >::size(), and Foam::Zero.

Referenced by edgeCollapser::checkMeshQuality(), and face::sweptVol().

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◆ 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 34 of file faceIntersection.C.

References Foam::average(), PointHit< Point >::distance(), PointHit< Point >::eligibleMiss(), f(), PointHit< Point >::hit(), PointHit< Point >::hitPoint(), face::intersection(), Foam::mag(), PointHit< Point >::missPoint(), nPoints, points, PointHit< Point >::setDistance(), PointHit< Point >::setHit(), PointHit< Point >::setMiss(), and PointHit< Point >::setPoint().

Referenced by treeDataCell::findIntersectOp::operator()(), AMIInterpolation::srcPointFace(), and AMIInterpolation::tgtPointFace().

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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 141 of file faceIntersection.C.

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

Referenced by face::ray().

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◆ nearestPoint()

◆ 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 213 of file faceIntersection.C.

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

Referenced by face::nearestPoint().

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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 34 of file faceContactSphere.C.

References Foam::mag(), 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 33 of file faceAreaInContact.C.

References forAll, face::mag(), Foam::mag(), List< T >::setSize(), 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.

References List< T >::size().

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◆ 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(), face::points(), and List< T >::size().

Referenced by edgeCollapser::checkMeshQuality(), Foam::longestEdge(), and 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 UList< T >::fcIndex().

Referenced by Foam::levelSetFraction().

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◆ 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 edge::end(), UList< T >::fcIndex(), forAll, UList< T >::rcIndex(), and edge::start().

Referenced by patchFaceOrientation::updateEdge(), and patchFaceOrientation::updateFace().

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◆ nTriangles()

Foam::label nTriangles ( ) const
inline

Size of the face's triangulation.

Definition at line 112 of file faceI.H.

References List< T >::size().

Referenced by faceAreaIntersect::triangulate().

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◆ 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, 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 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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◆ centre() [3/3]

Foam::point centre ( const PointField ps)

Definition at line 32 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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◆ area() [3/3]

Foam::vector area ( const PointField ps)

Definition at line 100 of file faceTemplates.C.

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

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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 91 of file face.H.


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