backgroundMeshDecomposition Class Reference

Store a background polyMesh to use for the decomposition of space and queries for parallel conformalVoronoiMesh. More...

#include <backgroundMeshDecomposition.H>

Public Member Functions
	ClassName ("backgroundMeshDecomposition")
	Runtime type information.
	backgroundMeshDecomposition (const Time &runTime, Random &rndGen, const conformationSurfaces &geometryToConformTo, const dictionary &coeffsDict, const fileName &decompDictFile="")
	Construct from components in foamyHexMesh operation.
	~backgroundMeshDecomposition ()=default
	Destructor.
autoPtr< mapDistributePolyMesh >	distribute (volScalarField &cellWeights)
	Redistribute the background mesh based on a supplied weight field,.
template<class PointType>
autoPtr< mapDistribute >	distributePoints (List< PointType > &points) const
	Distribute supplied the points to the appropriate processor.
bool	positionOnThisProcessor (const point &pt) const
	Is the given position inside the domain of this decomposition.
boolList	positionOnThisProcessor (const List< point > &pts) const
	Are the given positions inside the domain of this decomposition.
bool	overlapsThisProcessor (const treeBoundBox &box) const
	Does the given box overlap the faces of the boundary of this.
bool	overlapsThisProcessor (const point &centre, const scalar radiusSqr) const
	Does the given sphere overlap the faces of the boundary of this.
pointIndexHit	findLine (const point &start, const point &end) const
	Find nearest intersection of line between start and end, (exposing.
pointIndexHit	findLineAny (const point &start, const point &end) const
	Find any intersection of line between start and end, (exposing.
template<class PointType>
labelList	processorPosition (const List< PointType > &pts) const
	What processor is the given position on?
labelList	processorNearestPosition (const List< point > &pts) const
	What is the nearest processor to the given position?
List< List< pointIndexHit > >	intersectsProcessors (const List< point > &starts, const List< point > &ends, bool includeOwnProcessor=false) const
	Which processors are intersected by the line segment, returns all.
bool	overlapsOtherProcessors (const point &centre, const scalar &radiusSqr) const
labelList	overlapProcessors (const point &centre, const scalar radiusSqr) const
const fvMesh &	mesh () const
	Return access to the underlying mesh.
const indexedOctree< treeDataBPatch > &	tree () const
	Return access to the underlying tree.
const treeBoundBox &	procBounds () const
	Return the boundBox of this processor.
const labelList &	cellLevel () const
	Return the cell level of the underlying mesh.
const labelList &	pointLevel () const
	Return the point level of the underlying mesh.

Static Public Member Functions
static autoPtr< mapDistribute >	buildMap (const labelUList &toProc)
	Build a mapDistribute for the supplied destination processor data.

Detailed Description

Store a background polyMesh to use for the decomposition of space and queries for parallel conformalVoronoiMesh.

The requirements are:

• To have a decomposition of space which can quickly interrogate an arbitrary location from any processor to reliably and unambiguously determine which processor owns the space that the point is in, i.e. as the vertices move, or need inserted as part of the surface conformation, send them to the correct proc.
• To be able to be dynamically built, refined and redistributed to other procs the partitioning as the meshing progresses to balance the load.
• To be able to query whether a sphere (the circumsphere of a Delaunay tet) overlaps any part of the space defined by the structure, and whether a ray (Voronoi edge) penetrates any part of the space defined by the structure, this is what determines if points get referred to a processor.

Source files

• backgroundMeshDecomposition.H
• backgroundMeshDecompositionI.H
• backgroundMeshDecomposition.C

Definition at line 88 of file backgroundMeshDecomposition.H.

Constructor & Destructor Documentation

backgroundMeshDecomposition()

backgroundMeshDecomposition	(	const Time &	runTime,
		Random &	rndGen,
		const conformationSurfaces &	geometryToConformTo,
		const dictionary &	coeffsDict,
		const fileName &	decompDictFile = "" )

Construct from components in foamyHexMesh operation.

References rndGen, and runTime.

~backgroundMeshDecomposition()

~backgroundMeshDecomposition ( )

default

Destructor.

Member Function Documentation

ClassName()

ClassName

(

"backgroundMeshDecomposition"

)

Runtime type information.

buildMap()

autoPtr< mapDistribute > buildMap ( const labelUList & toProc )

static

Build a mapDistribute for the supplied destination processor data.

distribute()

autoPtr< mapDistributePolyMesh > distribute

(

volScalarField &

cellWeights

)

Redistribute the background mesh based on a supplied weight field,.

returning a map to use to redistribute vertices.

distributePoints()

template<class PointType>

autoPtr< mapDistribute > distributePoints

(

List< PointType > &

points

)

const

Distribute supplied the points to the appropriate processor.

References points.

positionOnThisProcessor() [1/2]

bool positionOnThisProcessor

(

const point &

pt

)

const

Is the given position inside the domain of this decomposition.

positionOnThisProcessor() [2/2]

boolList positionOnThisProcessor

(

const List< point > &

pts

)

const

Are the given positions inside the domain of this decomposition.

References pts.

overlapsThisProcessor() [1/2]

bool overlapsThisProcessor

(

const treeBoundBox &

box

)

const

Does the given box overlap the faces of the boundary of this.

processor

overlapsThisProcessor() [2/2]

bool overlapsThisProcessor	(	const point &	centre,
		const scalar	radiusSqr ) const

Does the given sphere overlap the faces of the boundary of this.

processor

findLine()

pointIndexHit findLine	(	const point &	start,
		const point &	end ) const

Find nearest intersection of line between start and end, (exposing.

underlying indexedOctree)

findLineAny()

pointIndexHit findLineAny	(	const point &	start,
		const point &	end ) const

Find any intersection of line between start and end, (exposing.

underlying indexedOctree)

processorPosition()

template<class PointType>

labelList processorPosition

(

const List< PointType > &

pts

)

const

What processor is the given position on?

References pts.

processorNearestPosition()

labelList processorNearestPosition

(

const List< point > &

pts

)

const

What is the nearest processor to the given position?

References pts.

intersectsProcessors()

List< List< pointIndexHit > > intersectsProcessors	(	const List< point > &	starts,
		const List< point > &	ends,
		bool	includeOwnProcessor = false ) const

Which processors are intersected by the line segment, returns all.

processors whose boundary patch is intersected by the sphere. By default this does not return the processor that the query is launched from, it is assumed that the point is on that processor. The index data member of the pointIndexHit is replaced with the processor index.

overlapsOtherProcessors()

bool overlapsOtherProcessors	(	const point &	centre,
		const scalar &	radiusSqr ) const

overlapProcessors()

labelList overlapProcessors	(	const point &	centre,
		const scalar	radiusSqr ) const

mesh()

const Foam::fvMesh & mesh ( ) const

inline

Return access to the underlying mesh.

Definition at line 23 of file backgroundMeshDecompositionI.H.

tree()

const Foam::indexedOctree< Foam::treeDataBPatch > & tree ( ) const

inline

Return access to the underlying tree.

Definition at line 30 of file backgroundMeshDecompositionI.H.

procBounds()

const Foam::treeBoundBox & procBounds ( ) const

inline

Return the boundBox of this processor.

Definition at line 37 of file backgroundMeshDecompositionI.H.

References UPstream::myProcNo().

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cellLevel()

const Foam::labelList & cellLevel ( ) const

inline

Return the cell level of the underlying mesh.

Definition at line 43 of file backgroundMeshDecompositionI.H.

pointLevel()

const Foam::labelList & pointLevel ( ) const

inline

Return the point level of the underlying mesh.

Definition at line 49 of file backgroundMeshDecompositionI.H.

---

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

• applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/backgroundMeshDecomposition/backgroundMeshDecomposition.H
• applications/utilities/mesh/generation/foamyMesh/conformalVoronoiMesh/backgroundMeshDecomposition/backgroundMeshDecompositionI.H