Does polyTopoChanges to remove edges. Can remove faces due to edge collapse but can not remove cells due to face removal! Also removes unused points. More...

Collaboration diagram for edgeCollapser:

[legend]

Public Types
enum	collapseType { noCollapse = 0, toPoint = 1, toEdge = 2 }

Public Member Functions
	ClassName ("edgeCollapser")
	Runtime type information. More...

	edgeCollapser (const polyMesh &mesh)
	Construct from mesh. More...

	edgeCollapser (const polyMesh &mesh, const dictionary &dict)
	Construct from mesh and dict. More...

void	consistentCollapse (const globalIndex &globalPoints, const labelList &pointPriority, const Map< point > &collapsePointToLocation, PackedBoolList &collapseEdge, List< pointEdgeCollapse > &allPointInfo, const bool allowCellCollapse=false) const
	Ensure that the collapse is parallel consistent and update. More...

bool	setRefinement (const List< pointEdgeCollapse > &allPointInfo, polyTopoChange &meshMod) const
	Play commands into polyTopoChange to create mesh. More...

label	markSmallEdges (const scalarField &minEdgeLen, const labelList &pointPriority, PackedBoolList &collapseEdge, Map< point > &collapsePointToLocation) const
	Mark (in collapseEdge) any edges to collapse. More...

label	markMergeEdges (const scalar maxCos, const labelList &pointPriority, PackedBoolList &collapseEdge, Map< point > &collapsePointToLocation) const
	Mark (in collapseEdge) any edges to merge. More...

labelPair	markSmallSliverFaces (const scalarField &faceFilterFactor, const labelList &pointPriority, PackedBoolList &collapseEdge, Map< point > &collapsePointToLocation) const
	Find small faces and sliver faces in the mesh and mark the. More...

labelPair	markFaceZoneEdges (const faceZone &fZone, const scalarField &faceFilterFactor, const labelList &pointPriority, PackedBoolList &collapseEdge, Map< point > &collapsePointToLocation) const
	Marks edges in the faceZone indirectPatchFaces for collapse. More...

Static Public Member Functions
static HashSet< label >	checkBadFaces (const polyMesh &mesh, const dictionary &meshQualityDict)
	Calls motionSmoother::checkMesh and returns a set of bad faces. More...

static label	checkMeshQuality (const polyMesh &mesh, const dictionary &meshQualityDict, PackedBoolList &isErrorPoint)
	Check mesh and mark points on faces in error. More...

Private Member Functions
labelList	edgesFromPoints (const label &faceI, const labelList &pointLabels) const
	Create an edgeList of edges in faceI which have both their points. More...

void	collapseToEdge (const label faceI, const pointField &pts, const labelList &pointPriority, const vector &collapseAxis, const point &fC, const labelList &facePtsNeg, const labelList &facePtsPos, const scalarList &dNeg, const scalarList &dPos, const scalar dShift, PackedBoolList &collapseEdge, Map< point > &collapsePointToLocation) const
	Collapse a face to an edge, marking the collapsed edges and new. More...

void	collapseToPoint (const label &faceI, const pointField &pts, const labelList &pointPriority, const point &fC, const labelList &facePts, PackedBoolList &collapseEdge, Map< point > &collapsePointToLocation) const
	Collapse a face to a point, marking the collapsed edges and new. More...

void	faceCollapseAxisAndAspectRatio (const face &f, const point &fC, vector &collapseAxis, scalar &aspectRatio) const
	Do an eigenvector analysis of the face to get its collapse axis. More...

scalarField	calcTargetFaceSizes () const
	Return the target length scale for each face. More...

collapseType	collapseFace (const labelList &pointPriority, const face &f, const label faceI, const scalar targetFaceSize, PackedBoolList &collapseEdge, Map< point > &collapsePointToLocation, const scalarField &faceFilterFactor) const
	Decides whether a face should be collapsed (and if so it it is to a. More...

label	edgeMaster (const labelList &pointPriority, const edge &e) const
	Return label of point that has the highest priority. This will be. More...

void	checkBoundaryPointMergeEdges (const label pointI, const label otherPointI, const labelList &pointPriority, Map< point > &collapsePointToLocation) const
	Decides which points in an edge to collapse, based on their priority. More...

label	breakStringsAtEdges (const PackedBoolList &markedEdges, PackedBoolList &collapseEdge, List< pointEdgeCollapse > &allPointInfo) const
	Helper function that breaks strings of collapses if an edge is not. More...

void	determineDuplicatePointsOnFace (const face &f, PackedBoolList &markedPoints, labelHashSet &uniqueCollapses, labelHashSet &duplicateCollapses, List< pointEdgeCollapse > &allPointInfo) const
	Prevent face pinching by finding points in a face that will be. More...

label	countEdgesOnFace (const face &f, List< pointEdgeCollapse > &allPointInfo) const
	Count the number of edges on the face that will exist as a result. More...

bool	isFaceCollapsed (const face &f, List< pointEdgeCollapse > &allPointInfo) const
	Does the face have fewer than 3 edges as a result of the potential. More...

label	syncCollapse (const globalIndex &globalPoints, const labelList &boundaryPoint, const PackedBoolList &collapseEdge, const Map< point > &collapsePointToLocation, List< pointEdgeCollapse > &allPointInfo) const
	Given the collapse information, propagates the information using. More...

void	filterFace (const Map< DynamicList< label > > &collapseStrings, const List< pointEdgeCollapse > &allPointInfo, face &f) const
	Renumber f with new vertices. Removes consecutive duplicates. More...

	edgeCollapser (const edgeCollapser &)
	Disallow default bitwise copy construct. More...

void	operator= (const edgeCollapser &)
	Disallow default bitwise assignment. More...

Private Attributes
const polyMesh &	mesh_
	Reference to mesh. More...

const scalar	guardFraction_
	Controls collapse of a face to an edge. More...

const scalar	maxCollapseFaceToPointSideLengthCoeff_
	Only collapse face to a point if high aspect ratio. More...

const Switch	allowEarlyCollapseToPoint_
	Allow a face to be collapsed to a point early, before the test. More...

const scalar	allowEarlyCollapseCoeff_
	Fraction of maxCollapseFaceToPointSideLengthCoeff_ to use when. More...

Detailed Description

Does polyTopoChanges to remove edges. Can remove faces due to edge collapse but can not remove cells due to face removal! Also removes unused points.

Source files

Definition at line 66 of file edgeCollapser.H.

Member Enumeration Documentation

◆ collapseType

enum collapseType

Enumerator
noCollapse
toPoint
toEdge

Definition at line 71 of file edgeCollapser.H.

Constructor & Destructor Documentation

◆ edgeCollapser() [1/3]

edgeCollapser ( const edgeCollapser & )

private

Disallow default bitwise copy construct.

◆ edgeCollapser() [2/3]

edgeCollapser ( const polyMesh & mesh )

Construct from mesh.

Definition at line 1214 of file edgeCollapser.C.

◆ edgeCollapser() [3/3]

edgeCollapser	(	const polyMesh &	mesh,
		const dictionary &	dict
	)

Construct from mesh and dict.

Definition at line 1225 of file edgeCollapser.C.

References Foam::endl(), Foam::Info, and Foam::nl.

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Member Function Documentation

◆ edgesFromPoints()

Foam::labelList edgesFromPoints	(	const label &	faceI,
		const labelList &	pointLabels
	)		const

private

Create an edgeList of edges in faceI which have both their points.

in pointLabels

Definition at line 121 of file edgeCollapser.C.

References Foam::constant::electromagnetic::e, forAll, pointLabels(), List::setSize(), and List::size().

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◆ collapseToEdge()

void collapseToEdge	(	const label	faceI,
		const pointField &	pts,
		const labelList &	pointPriority,
		const vector &	collapseAxis,
		const point &	fC,
		const labelList &	facePtsNeg,
		const labelList &	facePtsPos,
		const scalarList &	dNeg,
		const scalarList &	dPos,
		const scalar	dShift,
		PackedBoolList &	collapseEdge,
		Map< point > &	collapsePointToLocation
	)		const

private

Collapse a face to an edge, marking the collapsed edges and new.

locations for points that will move as a result of the collapse

Definition at line 170 of file edgeCollapser.C.

References DynamicList::append(), DynamicList::clear(), collapseEdge(), forAll, Foam::labelMin, Foam::max(), and List::size().

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◆ collapseToPoint()

void collapseToPoint	(	const label &	faceI,
		const pointField &	pts,
		const labelList &	pointPriority,
		const point &	fC,
		const labelList &	facePts,
		PackedBoolList &	collapseEdge,
		Map< point > &	collapsePointToLocation
	)		const

private

Collapse a face to a point, marking the collapsed edges and new.

locations for points that will move as a result of the collapse

Definition at line 288 of file edgeCollapser.C.

References DynamicList::append(), DynamicList::clear(), collapseEdge(), f(), forAll, and Foam::labelMin.

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◆ faceCollapseAxisAndAspectRatio()

void faceCollapseAxisAndAspectRatio	(	const face &	f,
		const point &	fC,
		vector &	collapseAxis,
		scalar &	aspectRatio
	)		const

private

Do an eigenvector analysis of the face to get its collapse axis.

and aspect ratio

Definition at line 390 of file edgeCollapser.C.

References Foam::det(), Foam::constant::electromagnetic::e, Foam::eigenValues(), Foam::eigenVector(), f(), Foam::longestEdge(), Foam::mag(), Foam::magSqr(), Foam::max(), Foam::sqrt(), Vector< Cmpt >::x(), and Vector< Cmpt >::y().

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◆ calcTargetFaceSizes()

Foam::scalarField calcTargetFaceSizes ( ) const

private

Return the target length scale for each face.

Definition at line 474 of file edgeCollapser.C.

References polyMesh::boundaryMesh(), primitiveMesh::cellVolumes(), polyPatch::coupled(), polyPatch::faceCells(), polyMesh::faceNeighbour(), polyMesh::faceOwner(), forAll, Foam::max(), edgeCollapser::mesh_, primitiveMesh::nFaces(), primitiveMesh::nInternalFaces(), patches, Foam::pow(), polyPatch::start(), and syncTools::swapBoundaryFaceList().

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◆ collapseFace()

Foam::edgeCollapser::collapseType collapseFace	(	const labelList &	pointPriority,
		const face &	f,
		const label	faceI,
		const scalar	targetFaceSize,
		PackedBoolList &	collapseEdge,
		Map< point > &	collapsePointToLocation,
		const scalarField &	faceFilterFactor
	)		const

private

Decides whether a face should be collapsed (and if so it it is to a.

point or an edge)

Definition at line 563 of file edgeCollapser.C.

References collapseEdge(), Foam::endl(), f(), UList< T >::first(), forAll, Foam::inplaceReorder(), Foam::invert(), UList< T >::last(), Foam::magSqr(), List::size(), UList< T >::size(), Foam::sortedOrder(), Foam::sqr(), Foam::toPoint(), WarningInFunction, and Vector< scalar >::zero.

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◆ edgeMaster()

Foam::label edgeMaster	(	const labelList &	pointPriority,
		const edge &	e
	)		const

private

Return label of point that has the highest priority. This will be.

the point on the edge that will be collapsed to.

Definition at line 750 of file edgeCollapser.C.

References Foam::e.

◆ checkBoundaryPointMergeEdges()

void checkBoundaryPointMergeEdges	(	const label	pointI,
		const label	otherPointI,
		const labelList &	pointPriority,
		Map< point > &	collapsePointToLocation
	)		const

private

Decides which points in an edge to collapse, based on their priority.

Definition at line 808 of file edgeCollapser.C.

References points.

◆ breakStringsAtEdges()

Foam::label breakStringsAtEdges	(	const PackedBoolList &	markedEdges,
		PackedBoolList &	collapseEdge,
		List< pointEdgeCollapse > &	allPointInfo
	)		const

private

Helper function that breaks strings of collapses if an edge is not.

labelled to collapse, but its points both collapse to the same location

Definition at line 856 of file edgeCollapser.C.

References collapseEdge(), Foam::e, and forAll.

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◆ determineDuplicatePointsOnFace()

void determineDuplicatePointsOnFace	(	const face &	f,
		PackedBoolList &	markedPoints,
		labelHashSet &	uniqueCollapses,
		labelHashSet &	duplicateCollapses,
		List< pointEdgeCollapse > &	allPointInfo
	)		const

private

Prevent face pinching by finding points in a face that will be.

collapsed to the same location, but that are not ordered consecutively in the face

Definition at line 918 of file edgeCollapser.C.

References HashTable::clear(), f(), forAll, HashTable::found(), and HashSet< Key, Hash >::insert().

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◆ countEdgesOnFace()

Foam::label countEdgesOnFace	(	const face &	f,
		List< pointEdgeCollapse > &	allPointInfo
	)		const

private

Count the number of edges on the face that will exist as a result.

of the collapse

Definition at line 958 of file edgeCollapser.C.

References f(), and forAll.

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◆ isFaceCollapsed()

bool isFaceCollapsed	(	const face &	f,
		List< pointEdgeCollapse > &	allPointInfo
	)		const

private

Does the face have fewer than 3 edges as a result of the potential.

collapse

Definition at line 992 of file edgeCollapser.C.

References f().

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◆ syncCollapse()

Foam::label syncCollapse	(	const globalIndex &	globalPoints,
		const labelList &	boundaryPoint,
		const PackedBoolList &	collapseEdge,
		const Map< point > &	collapsePointToLocation,
		List< pointEdgeCollapse > &	allPointInfo
	)		const

private

Given the collapse information, propagates the information using.

PointEdgeWave. Result is a list of new point locations and indices

Definition at line 1016 of file edgeCollapser.C.

References Foam::abort(), DynamicList::append(), List::clear(), collapseEdge(), Foam::e, Foam::FatalError, FatalErrorInFunction, forAll, Foam::labelMax, Foam::labelMin, List::setSize(), and Vector< scalar >::zero.

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◆ filterFace()

void filterFace	(	const Map< DynamicList< label > > &	collapseStrings,
		const List< pointEdgeCollapse > &	allPointInfo,
		face &	f
	)		const

private

Renumber f with new vertices. Removes consecutive duplicates.

Definition at line 1122 of file edgeCollapser.C.

References Foam::endl(), f(), Foam::findIndex(), forAll, List::setSize(), and WarningInFunction.

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◆ operator=()

void operator= ( const edgeCollapser & )

private

Disallow default bitwise assignment.

◆ ClassName()

ClassName ( "edgeCollapser" )

Runtime type information.

◆ checkBadFaces()

Foam::HashSet< Foam::label > checkBadFaces	(	const polyMesh &	mesh,
		const dictionary &	meshQualityDict
	)

static

Calls motionSmoother::checkMesh and returns a set of bad faces.

Definition at line 46 of file edgeCollapser.C.

References DynamicList::append(), Foam::polyMeshGenChecks::checkMesh(), Foam::endl(), forAll, Foam::Info, Foam::mag(), and mesh.

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◆ checkMeshQuality()

Foam::label checkMeshQuality	(	const polyMesh &	mesh,
		const dictionary &	meshQualityDict,
		PackedBoolList &	isErrorPoint
	)

static

Check mesh and mark points on faces in error.

Returns boolList with points in error set

Definition at line 82 of file edgeCollapser.C.

References f(), forAll, forAllConstIter(), mesh, Foam::returnReduce(), and HashTable::size().

Referenced by polyMeshFilter::filterEdges(), and polyMeshFilter::filterFacesLoop().

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◆ consistentCollapse()

void consistentCollapse	(	const globalIndex &	globalPoints,
		const labelList &	pointPriority,
		const Map< point > &	collapsePointToLocation,
		PackedBoolList &	collapseEdge,
		List< pointEdgeCollapse > &	allPointInfo,
		const bool	allowCellCollapse = `false`
	)		const

Ensure that the collapse is parallel consistent and update.

allPointInfo. Returns a list of edge collapses that is consistent across coupled boundaries and a list of pointEdgeCollapses.

Definition at line 1637 of file edgeCollapser.C.

References Foam::abort(), cells, collapseEdge(), Foam::endl(), f(), Foam::FatalError, FatalErrorInFunction, forAll, Foam::Info, Foam::nl, Foam::reduce(), Foam::returnReduce(), List::size(), syncTools::syncEdgeList(), and syncTools::syncPointList().

Referenced by polyMeshFilter::filterEdges(), polyMeshFilter::filterFaces(), and main().

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◆ setRefinement()

bool setRefinement	(	const List< pointEdgeCollapse > &	allPointInfo,
		polyTopoChange &	meshMod
	)		const

Play commands into polyTopoChange to create mesh.

Return true if anything changed.

Definition at line 1265 of file edgeCollapser.C.

References boundaryMesh::boundaryMesh(), cells, pointEdgeCollapse::collapseIndex(), Foam::decrIndent(), Foam::endl(), f(), faceZone::flipMap(), forAll, forAllConstIter(), Foam::incrIndent(), Foam::indent(), Foam::Info, polyTopoChange::modifyFace(), polyTopoChange::modifyPoint(), Foam::nl, nPoints, Foam::Pout, Foam::reduce(), polyTopoChange::removeCell(), polyTopoChange::removeFace(), polyTopoChange::removePoint(), List::size(), faceZone::whichFace(), boundaryMesh::whichPatch(), and ZoneMesh::whichZone().

Referenced by polyMeshFilter::filterEdges(), polyMeshFilter::filterFaces(), and main().

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◆ markSmallEdges()

Foam::label markSmallEdges	(	const scalarField &	minEdgeLen,
		const labelList &	pointPriority,
		PackedBoolList &	collapseEdge,
		Map< point > &	collapsePointToLocation
	)		const

Mark (in collapseEdge) any edges to collapse.

Definition at line 1828 of file edgeCollapser.C.

References Foam::average(), collapseEdge(), Foam::e, forAll, and points.

Referenced by polyMeshFilter::filterEdges().

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◆ markMergeEdges()

Foam::label markMergeEdges	(	const scalar	maxCos,
		const labelList &	pointPriority,
		PackedBoolList &	collapseEdge,
		Map< point > &	collapsePointToLocation
	)		const

Mark (in collapseEdge) any edges to merge.

Definition at line 1880 of file edgeCollapser.C.

References collapseEdge(), removePoints::countPointUsage(), forAll, Foam::mag(), points, and List::size().

Referenced by polyMeshFilter::filterEdges().

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◆ markSmallSliverFaces()

Foam::labelPair markSmallSliverFaces	(	const scalarField &	faceFilterFactor,
		const labelList &	pointPriority,
		PackedBoolList &	collapseEdge,
		Map< point > &	collapsePointToLocation
	)		const

Find small faces and sliver faces in the mesh and mark the.

edges that need to be collapsed in order to remove these faces. Also returns a map of new locations for points that will move as a result of the collapse. Use in conjuctions with edgeCollapser to synchronise the collapses and modify the mesh

Definition at line 1967 of file edgeCollapser.C.

References Foam::abort(), collapseEdge(), f(), Foam::FatalError, FatalErrorInFunction, forAll, and Foam::toPoint().

Referenced by polyMeshFilter::filterFaces().

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◆ markFaceZoneEdges()

Foam::labelPair markFaceZoneEdges	(	const faceZone &	fZone,
		const scalarField &	faceFilterFactor,
		const labelList &	pointPriority,
		PackedBoolList &	collapseEdge,
		Map< point > &	collapsePointToLocation
	)		const

Marks edges in the faceZone indirectPatchFaces for collapse.

Definition at line 2028 of file edgeCollapser.C.

References Foam::abort(), collapseEdge(), f(), Foam::FatalError, FatalErrorInFunction, forAll, Foam::toPoint(), and faceZone::whichFace().

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Field Documentation

◆ mesh_

const polyMesh& mesh_

private

Reference to mesh.

Definition at line 84 of file edgeCollapser.H.

Referenced by edgeCollapser::calcTargetFaceSizes().

◆ guardFraction_

const scalar guardFraction_

private

Controls collapse of a face to an edge.

Definition at line 87 of file edgeCollapser.H.

◆ maxCollapseFaceToPointSideLengthCoeff_

const scalar maxCollapseFaceToPointSideLengthCoeff_

private

Only collapse face to a point if high aspect ratio.

Definition at line 90 of file edgeCollapser.H.

◆ allowEarlyCollapseToPoint_

const Switch allowEarlyCollapseToPoint_

private

Allow a face to be collapsed to a point early, before the test.

to collapse to an edge

Definition at line 94 of file edgeCollapser.H.

◆ allowEarlyCollapseCoeff_

const scalar allowEarlyCollapseCoeff_

private

Fraction of maxCollapseFaceToPointSideLengthCoeff_ to use when.

allowEarlyCollapseToPoint_ is on

Definition at line 98 of file edgeCollapser.H.

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

src/dynamicMesh/polyTopoChange/polyTopoChange/edgeCollapser.H
src/dynamicMesh/polyTopoChange/polyTopoChange/edgeCollapser.C

Public Types

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Member Enumeration Documentation

◆ collapseType

Constructor & Destructor Documentation

◆ edgeCollapser() [1/3]

◆ edgeCollapser() [2/3]

◆ edgeCollapser() [3/3]

Member Function Documentation

◆ edgesFromPoints()

◆ collapseToEdge()

◆ collapseToPoint()

◆ faceCollapseAxisAndAspectRatio()

◆ calcTargetFaceSizes()

◆ collapseFace()

◆ edgeMaster()

◆ checkBoundaryPointMergeEdges()

◆ breakStringsAtEdges()

◆ determineDuplicatePointsOnFace()

◆ countEdgesOnFace()

◆ isFaceCollapsed()

◆ syncCollapse()

◆ filterFace()

◆ operator=()

◆ ClassName()

◆ checkBadFaces()

◆ checkMeshQuality()

◆ consistentCollapse()

◆ setRefinement()

◆ markSmallEdges()

◆ markMergeEdges()

◆ markSmallSliverFaces()

◆ markFaceZoneEdges()

Field Documentation

◆ mesh_

◆ guardFraction_

◆ maxCollapseFaceToPointSideLengthCoeff_

◆ allowEarlyCollapseToPoint_

◆ allowEarlyCollapseCoeff_