Conformal-Voronoi 2D automatic mesher with grid or read initial points and point position relaxation with optional "squarification". More...

Inheritance diagram for CV2D:

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Collaboration diagram for CV2D:

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Public Types
typedef const point2D &	point2DFromPoint

typedef const Point &	PointFromPoint2D

Public Member Functions
	ClassName ("CV2D")
	Runtime type information. More...

	CV2D (const Time &runTime, const dictionary &controlDict)
	Construct for given surface. More...

	~CV2D ()
	Destructor. More...

const cv2DControls &	meshControls () const

const point2D &	toPoint2D (const point &) const

const point2DField	toPoint2D (const pointField &) const

point	toPoint3D (const point2D &) const

point2DFromPoint	toPoint2D (const Point &) const

PointFromPoint2D	toPoint (const point2D &) const

point	toPoint3D (const Point &) const

void	insertPoints (const point2DField &points, const scalar nearness)
	Create the initial mesh from the given internal points. More...

void	insertPoints (const fileName &pointFileName)
	Create the initial mesh from the internal points in the given. More...

void	insertGrid ()
	Create the initial mesh as a regular grid of points. More...

void	insertSurfacePointPairs ()
	Insert all surface point-pairs from. More...

void	boundaryConform ()
	Insert point-pairs where there are protrusions into. More...

void	removeSurfacePointPairs ()
	Remove the point-pairs introduced by insertSurfacePointPairs. More...

void	movePoint (const Vertex_handle &vh, const Point &P)

void	newPoints ()
	Move the internal points to the given new locations and update. More...

void	extractPatches (wordList &patchNames, labelList &patchSizes, EdgeMap< label > &mapEdgesRegion, EdgeMap< label > &indirectPatchEdge) const
	Extract patch names and sizes. More...

void	writePoints (const fileName &fName, bool internalOnly) const
	Write internal points to .obj file. More...

void	writeTriangles (const fileName &fName, bool internalOnly) const
	Write triangles as .obj file. More...

void	writeFaces (const fileName &fName, bool internalOnly) const
	Write dual faces as .obj file. More...

void	calcDual (point2DField &dualPoints, faceList &dualFaces, wordList &patchNames, labelList &patchSizes, EdgeMap< label > &mapEdgesRegion, EdgeMap< label > &indirectPatchEdge) const
	Calculates dual points (circumcentres of tets) and faces. More...

void	writePatch (const fileName &fName) const
	Write patch. More...

void	write () const

Detailed Description

Conformal-Voronoi 2D automatic mesher with grid or read initial points and point position relaxation with optional "squarification".

There are a substantial number of options to this mesher read from CV2DMesherDict file e.g.:

Min cell size used in tolerances when inserting points for boundary conforming. Also used to as the grid spacing usind in insertGrid. minCellSize 0.05;

Feature angle used to inser feature points 0 = all features, 180 = no features featureAngle 45;

Maximum quadrant angle allowed at a concave corner before additional "mitering" lines are added maxQuadAngle 110;

Should the mesh be square-dominated or of unbiased hexagons squares yes;

Near-wall region where cells are aligned with the wall specified as a number of cell layers nearWallAlignedDist 3;

Chose if the cell orientation should relax during the iterations or remain fixed to the x-y directions relaxOrientation no;

Insert near-boundary point mirror or point-pairs insertSurfaceNearestPointPairs yes;

Mirror near-boundary points rather than insert point-pairs mirrorPoints no;

Insert point-pairs vor dual-cell vertices very near the surface insertSurfaceNearPointPairs yes;

Choose if to randomise the initial grid created by insertGrid. randomiseInitialGrid yes;

Perturbation fraction, 1 = cell-size. randomPurturbation 0.1;

Number of relaxation iterations. nIterations 5;

Relaxation factor at the start of the iteration sequence. 0.5 is a sensible maximum and < 0.2 converges better. relaxationFactorStart 0.8;

Relaxation factor at the end of the iteration sequence. Should be <= relaxationFactorStart relaxationFactorEnd 0;

writeInitialTriangulation no; writeFeatureTriangulation no; writeNearestTriangulation no; writeInsertedPointPairs no; writeFinalTriangulation yes;

Maximum number of iterations used in boundaryConform. maxBoundaryConformingIter 5;

minEdgeLenCoeff 0.5; maxNotchLenCoeff 0.3; minNearPointDistCoeff 0.25; ppDistCoeff 0.05;

Source files

Definition at line 146 of file CV2D.H.

Member Typedef Documentation

typedef const point2D& point2DFromPoint

Definition at line 356 of file CV2D.H.

typedef const Point& PointFromPoint2D

Definition at line 357 of file CV2D.H.

Constructor & Destructor Documentation

CV2D	(	const Time &	runTime,
		const dictionary &	controlDict
	)

Construct for given surface.

~CV2D ( )

Destructor.

Member Function Documentation

ClassName ( "CV2D" )

Runtime type information.

const Foam::cv2DControls & meshControls ( ) const

inline

Definition at line 118 of file CV2DI.H.

const Foam::point2D & toPoint2D ( const point & p ) const

inline

Definition at line 124 of file CV2DI.H.

References p.

Referenced by CV2D::toPoint3D().

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const Foam::point2DField toPoint2D ( const pointField & p ) const

inline

Definition at line 130 of file CV2DI.H.

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

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Foam::point toPoint3D ( const point2D & p ) const

inline

Definition at line 141 of file CV2DI.H.

References p, CV2D::toPoint(), CV2D::toPoint2D(), Vector2D< Cmpt >::x(), and Vector2D< Cmpt >::y().

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Foam::CV2D::point2DFromPoint toPoint2D ( const Point & P ) const

inline

Definition at line 162 of file CV2DI.H.

Foam::CV2D::PointFromPoint2D toPoint ( const point2D & p ) const

inline

Definition at line 168 of file CV2DI.H.

References Vector2D< Cmpt >::x(), and Vector2D< Cmpt >::y().

Referenced by CV2D::toPoint3D().

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Foam::point toPoint3D ( const Point & P ) const

inline

Definition at line 176 of file CV2DI.H.

void insertPoints	(	const point2DField &	points,
		const scalar	nearness
	)

Create the initial mesh from the given internal points.

Points must be inside the boundary by at least nearness otherwise they are ignored.

void insertPoints ( const fileName & pointFileName )

Create the initial mesh from the internal points in the given.

file. Points outside the geometry are ignored.

void insertGrid ( )

Create the initial mesh as a regular grid of points.

Points outside the geometry are ignored.

void insertSurfacePointPairs ( )

Insert all surface point-pairs from.

insertSurfaceNearestPointPairs and findIntersectionForOutsideCentroid

void boundaryConform ( )

Insert point-pairs where there are protrusions into.

or out of the surface

void removeSurfacePointPairs ( )

Remove the point-pairs introduced by insertSurfacePointPairs.

and boundaryConform

void movePoint	(	const Vertex_handle &	vh,
		const Point &	P
	)

inline

Definition at line 182 of file CV2DI.H.

References insert().

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void newPoints ( )

Move the internal points to the given new locations and update.

the triangulation to ensure it is Delaunay void moveInternalPoints(const point2DField& newPoints);Calculate the displacements to create the new points

void extractPatches	(	wordList &	patchNames,
		labelList &	patchSizes,
		EdgeMap< label > &	mapEdgesRegion,
		EdgeMap< label > &	indirectPatchEdge
	)		const

Extract patch names and sizes.

void writePoints	(	const fileName &	fName,
		bool	internalOnly
	)		const

Write internal points to .obj file.

void writeTriangles	(	const fileName &	fName,
		bool	internalOnly
	)		const

Write triangles as .obj file.

void writeFaces	(	const fileName &	fName,
		bool	internalOnly
	)		const

Write dual faces as .obj file.

void calcDual	(	point2DField &	dualPoints,
		faceList &	dualFaces,
		wordList &	patchNames,
		labelList &	patchSizes,
		EdgeMap< label > &	mapEdgesRegion,
		EdgeMap< label > &	indirectPatchEdge
	)		const

Calculates dual points (circumcentres of tets) and faces.

(point-cell walk of tets). Returns:

dualPoints (in triangle ordering)
dualFaces (compacted)

void writePatch ( const fileName & fName ) const

Write patch.

void write ( ) const

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

applications/utilities/mesh/generation/foamyMesh/foamyQuadMesh/CV2D.H
applications/utilities/mesh/generation/foamyMesh/foamyQuadMesh/CV2DI.H

Public Types

Public Member Functions

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation