A tetrahedron primitive. More...

Classes
class	dummyOp
	Dummy. More...

class	storeOp
	Store resulting tets. More...

class	sumVolOp
	Sum resulting volumes. More...

Public Types
enum	{ nVertices = 4 , nEdges = 6 }

typedef FixedList< tetPoints, 200 >	tetIntersectionList
	Storage type for tets originating from intersecting tets. More...

Public Member Functions
	tetrahedron (const Point &a, const Point &b, const Point &c, const Point &d)
	Construct from points. More...

	tetrahedron (const UList< Point > &points, const FixedList< label, 4 > &indices)
	Construct from four points in the list of points. More...

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

const Point &	a () const
	Return vertices. More...

const Point &	b () const

const Point &	c () const

const Point &	d () const

triPointRef	tri (const label facei) const
	Return i-th face. More...

vector	Sa () const
	Face area normal for side a. More...

vector	Sb () const
	Face area normal for side b. More...

vector	Sc () const
	Face area normal for side c. More...

vector	Sd () const
	Face area normal for side d. More...

Point	centre () const
	Return centre (centroid) More...

scalar	mag () const
	Return volume. More...

Point	circumCentre () const
	Return circum-centre. More...

scalar	circumRadius () const
	Return circum-radius. More...

scalar	quality () const
	Return quality: Ratio of tetrahedron and circum-sphere. More...

Point	randomPoint (Random &rndGen) const
	Return a random point in the tetrahedron from a. More...

Point	barycentricToPoint (const barycentric &bary) const
	Calculate the point from the given barycentric coordinates. More...

barycentric	pointToBarycentric (const point &pt) const
	Calculate the barycentric coordinates from the given point. More...

scalar	pointToBarycentric (const point &pt, barycentric &bary) const
	Calculate the barycentric coordinates from the given point. More...

pointHit	nearestPoint (const point &p) const
	Return nearest point to p on tetrahedron. Is p itself. More...

bool	inside (const point &pt) const
	Return true if point is inside tetrahedron. More...

template<class AboveTetOp , class BelowTetOp >
void	sliceWithPlane (const plane &pl, AboveTetOp &aboveOp, BelowTetOp &belowOp) const
	Decompose tet into tets above and below plane. More...

void	tetOverlap (const tetrahedron< Point, PointRef > &tetB, tetIntersectionList &insideTets, label &nInside, tetIntersectionList &outsideTets, label &nOutside) const
	Decompose tet into tets inside and outside other tet. More...

pointHit	containmentSphere (const scalar tol) const
	Return (min)containment sphere, i.e. the smallest sphere with. More...

void	gradNiSquared (scalarField &buffer) const
	Fill buffer with shape function products. More...

void	gradNiDotGradNj (scalarField &buffer) const

void	gradNiGradNi (tensorField &buffer) const

void	gradNiGradNj (tensorField &buffer) const

boundBox	bounds () const
	Calculate the bounding box. More...

Friends
Istream &	operator>> (Istream &, tetrahedron &)

Ostream &	operator (Ostream &, const tetrahedron &)

Detailed Description

template<class Point, class PointRef>
class Foam::tetrahedron< Point, PointRef >

A tetrahedron primitive.

Ordering of edges needs to be the same for a tetrahedron class, a tetrahedron cell shape model and a tetCell.

Source files

Definition at line 86 of file tetrahedron.H.

Member Typedef Documentation

◆ tetIntersectionList

typedef FixedList<tetPoints, 200> tetIntersectionList

Storage type for tets originating from intersecting tets.

(can possibly be smaller than 200)

Definition at line 94 of file tetrahedron.H.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

Enumerator
nVertices
nEdges

Definition at line 165 of file tetrahedron.H.

Constructor & Destructor Documentation

◆ tetrahedron() [1/3]

tetrahedron	(	const Point &	a,
		const Point &	b,
		const Point &	c,
		const Point &	d
	)

inline

Construct from points.

Definition at line 37 of file tetrahedronI.H.

◆ tetrahedron() [2/3]

tetrahedron	(	const UList< Point > &	points,
		const FixedList< label, 4 > &	indices
	)

inline

Construct from four points in the list of points.

Definition at line 53 of file tetrahedronI.H.

◆ tetrahedron() [3/3]

tetrahedron ( Istream & is )

inline

Construct from Istream.

Definition at line 67 of file tetrahedronI.H.

Member Function Documentation

◆ a()

const Point & a

inline

Return vertices.

Definition at line 76 of file tetrahedronI.H.

Referenced by Foam::operator<<().

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◆ b()

const Point & b

inline

Definition at line 83 of file tetrahedronI.H.

Referenced by Foam::operator<<().

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◆ c()

const Point & c

inline

Definition at line 90 of file tetrahedronI.H.

Referenced by Foam::operator<<().

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◆ d()

const Point & d

inline

Definition at line 97 of file tetrahedronI.H.

Referenced by Foam::operator<<().

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◆ tri()

Foam::triPointRef tri ( const label facei ) const

inline

Return i-th face.

Definition at line 104 of file tetrahedronI.H.

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

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◆ Sa()

Foam::vector Sa

inline

Face area normal for side a.

Definition at line 137 of file tetrahedronI.H.

References triangle< Point, PointRef >::areaNormal().

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◆ Sb()

Foam::vector Sb

inline

Face area normal for side b.

Definition at line 144 of file tetrahedronI.H.

References triangle< Point, PointRef >::areaNormal().

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◆ Sc()

Foam::vector Sc

inline

Face area normal for side c.

Definition at line 151 of file tetrahedronI.H.

References triangle< Point, PointRef >::areaNormal().

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◆ Sd()

Foam::vector Sd

inline

Face area normal for side d.

Definition at line 158 of file tetrahedronI.H.

References triangle< Point, PointRef >::areaNormal().

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◆ centre()

Point centre

inline

Return centre (centroid)

Definition at line 165 of file tetrahedronI.H.

Referenced by nearWallFields::calcAddressing().

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◆ mag()

Foam::scalar mag

inline

Return volume.

Definition at line 172 of file tetrahedronI.H.

Referenced by Dual< Type >::Dual(), Moment< Type >::Moment(), and wallBoundedParticle::trackToEdge().

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◆ circumCentre()

Point circumCentre

inline

Return circum-centre.

Definition at line 179 of file tetrahedronI.H.

References b, lambda(), Foam::mag(), Foam::magSqr(), and mu.

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◆ circumRadius()

Foam::scalar circumRadius

inline

Return circum-radius.

Definition at line 206 of file tetrahedronI.H.

References b, lambda(), Foam::mag(), Foam::magSqr(), and mu.

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◆ quality()

Foam::scalar quality

inline

Return quality: Ratio of tetrahedron and circum-sphere.

volume, scaled so that a regular tetrahedron has a quality of 1

Definition at line 232 of file tetrahedronI.H.

References Foam::mag(), Foam::min(), Foam::pow3(), and Foam::sqrt().

Referenced by polyMeshTetDecomposition::minQuality().

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◆ randomPoint()

Point randomPoint ( Random & rndGen ) const

inline

Return a random point in the tetrahedron from a.

uniform distribution

Definition at line 245 of file tetrahedronI.H.

References Foam::barycentric01(), and rndGen.

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◆ barycentricToPoint()

Point barycentricToPoint ( const barycentric & bary ) const

inline

Calculate the point from the given barycentric coordinates.

Definition at line 255 of file tetrahedronI.H.

Referenced by interpolation< Type >::interpolate().

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◆ pointToBarycentric() [1/2]

Foam::barycentric pointToBarycentric ( const point & pt ) const

inline

Calculate the barycentric coordinates from the given point.

Definition at line 265 of file tetrahedronI.H.

Referenced by cellPointWeight::findTetrahedron().

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◆ pointToBarycentric() [2/2]

Foam::scalar pointToBarycentric	(	const point &	pt,
		barycentric &	bary
	)		const

inline

Calculate the barycentric coordinates from the given point.

Returns the determinant.

Definition at line 277 of file tetrahedronI.H.

References Foam::cmptSum(), Foam::det(), Foam::inv(), Foam::mag(), Vector< Cmpt >::x(), Vector< Cmpt >::y(), and Vector< Cmpt >::z().

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◆ nearestPoint()

Foam::pointHit nearestPoint ( const point & p ) const

inline

Return nearest point to p on tetrahedron. Is p itself.

if inside.

Definition at line 320 of file tetrahedronI.H.

References PointHit< PointType >::distance(), triangle< Point, PointRef >::nearestPoint(), p, and PointHit< PointType >::rawPoint().

Referenced by cellPointWeight::findTetrahedron().

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◆ inside()

bool inside ( const point & pt ) const

inline

Return true if point is inside tetrahedron.

Definition at line 415 of file tetrahedronI.H.

References Foam::mag(), n, and Foam::Zero.

Referenced by polyMeshTetDecomposition::findTet().

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◆ sliceWithPlane()

void sliceWithPlane	(	const plane &	pl,
		AboveTetOp &	aboveOp,
		BelowTetOp &	belowOp
	)		const

inline

Decompose tet into tets above and below plane.

Definition at line 1021 of file tetrahedronI.H.

◆ tetOverlap()

void tetOverlap	(	const tetrahedron< Point, PointRef > &	tetB,
		tetIntersectionList &	insideTets,
		label &	nInside,
		tetIntersectionList &	outsideTets,
		label &	nOutside
	)		const

inline

Decompose tet into tets inside and outside other tet.

◆ containmentSphere()

Foam::pointHit containmentSphere ( const scalar tol ) const

Return (min)containment sphere, i.e. the smallest sphere with.

all points inside. Returns pointHit with:

hit : if sphere is equal to circumsphere (biggest sphere)
point : centre of sphere
distance : radius of sphere
eligiblemiss: false Tol (small compared to 1, e.g. 1e-9) is used to determine whether point is inside: mag(pt - ctr) < (1+tol)*radius.

Definition at line 35 of file tetrahedron.C.

References triangle< Point, PointRef >::circumCentre(), Foam::magSqr(), PointHit< PointType >::rawPoint(), PointHit< PointType >::setDistance(), PointHit< PointType >::setHit(), PointHit< PointType >::setMiss(), PointHit< PointType >::setPoint(), and Foam::sqrt().

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◆ gradNiSquared()

void gradNiSquared ( scalarField & buffer ) const

Fill buffer with shape function products.

Definition at line 247 of file tetrahedron.C.

References Foam::mag(), and Foam::magSqr().

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◆ gradNiDotGradNj()

void gradNiDotGradNj ( scalarField & buffer ) const

Definition at line 268 of file tetrahedron.C.

References Foam::mag().

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◆ gradNiGradNi()

void gradNiGradNi ( tensorField & buffer ) const

Definition at line 298 of file tetrahedron.C.

References Foam::mag(), and Foam::sqr().

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◆ gradNiGradNj()

void gradNiGradNj ( tensorField & buffer ) const

Definition at line 316 of file tetrahedron.C.

References Foam::mag().

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◆ bounds()

Foam::boundBox bounds

Calculate the bounding box.

Definition at line 342 of file tetrahedron.C.

References b, max(), and Foam::min().

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Friends And Related Function Documentation

◆ operator>>

Istream & operator>>	(	Istream &	,
		tetrahedron< Point, PointRef > &
	)

friend

◆ operator

Ostream & operator	(	Ostream &	,
		const tetrahedron< Point, PointRef > &
	)

friend

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

src/OpenFOAM/meshes/primitiveShapes/tetrahedron/tetrahedron.H
src/OpenFOAM/meshes/primitiveShapes/tetrahedron/tetrahedron.C
src/OpenFOAM/meshes/primitiveShapes/tetrahedron/tetrahedronI.H

Classes

Public Types

Public Member Functions

Friends

Detailed Description

Member Typedef Documentation

◆ tetIntersectionList

Member Enumeration Documentation

◆ anonymous enum

Constructor & Destructor Documentation

◆ tetrahedron() [1/3]

◆ tetrahedron() [2/3]

◆ tetrahedron() [3/3]

Member Function Documentation

◆ a()

◆ b()

◆ c()

◆ d()

◆ tri()

◆ Sa()

◆ Sb()

◆ Sc()

◆ Sd()

◆ centre()

◆ mag()

◆ circumCentre()

◆ circumRadius()

◆ quality()

◆ randomPoint()

◆ barycentricToPoint()

◆ pointToBarycentric() [1/2]

◆ pointToBarycentric() [2/2]

◆ nearestPoint()

◆ inside()

◆ sliceWithPlane()

◆ tetOverlap()

◆ containmentSphere()

◆ gradNiSquared()

◆ gradNiDotGradNj()

◆ gradNiGradNi()

◆ gradNiGradNj()

◆ bounds()

Friends And Related Function Documentation

◆ operator>>

◆ operator