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

#include <CV2D.H>

Inheritance diagram for CV2D:

[legend]

Collaboration diagram for CV2D:

[legend]

Public Types
typedef const point2D &	point2DFromPoint
typedef const Point &	PointFromPoint2D

Public Member Functions
	ClassName ("CV2D")
	Runtime type information.
	CV2D (const Time &runTime, const dictionary &controlDict)
	Construct for given surface.
	~CV2D ()
	Destructor.
const cv2DControls &	meshControls () const
const point2D &	toPoint2D (const Foam::point &) const
const point2DField	toPoint2D (const pointField &) const
Foam::point	toPoint3D (const point2D &) const
point2DFromPoint	toPoint2D (const Point &) const
PointFromPoint2D	toPoint (const point2D &) const
Foam::point	toPoint3D (const Point &) const
void	insertPoints (const point2DField &points, const scalar nearness)
	Create the initial mesh from the given internal points.
void	insertPoints (const fileName &pointFileName)
	Create the initial mesh from the internal points in the given.
void	insertGrid ()
	Create the initial mesh as a regular grid of points.
void	insertSurfacePointPairs ()
	Insert all surface point-pairs from.
void	boundaryConform ()
	Insert point-pairs where there are protrusions into.
void	removeSurfacePointPairs ()
	Remove the point-pairs introduced by insertSurfacePointPairs.
void	movePoint (const Vertex_handle &vh, const Point &P)
void	newPoints ()
	Move the internal points to the given new locations and update.
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.
void	writePatch (const fileName &fName) const
	Write patch.
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 using in insertGrid. minCellSize 0.05;

Feature angle used to insert 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 142 of file CV2D.H.

Member Typedef Documentation

◆ point2DFromPoint

typedef const point2D& point2DFromPoint

Definition at line 426 of file CV2D.H.

◆ PointFromPoint2D

typedef const Point& PointFromPoint2D

Definition at line 427 of file CV2D.H.

Constructor & Destructor Documentation

◆ CV2D()

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

Construct for given surface.

References controlDict(), and runTime.

Here is the call graph for this function:

◆ ~CV2D()

~CV2D ( )

Destructor.

Member Function Documentation

◆ ClassName()

ClassName ( "CV2D" )

Runtime type information.

◆ meshControls()

const Foam::cv2DControls & meshControls ( ) const

inline

Definition at line 112 of file CV2DI.H.

◆ toPoint2D() [1/3]

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

inline

Definition at line 118 of file CV2DI.H.

References p.

◆ toPoint2D() [2/3]

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

inline

Definition at line 124 of file CV2DI.H.

References forAll, p, x, and y.

◆ toPoint3D() [1/2]

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

inline

Definition at line 135 of file CV2DI.H.

References p.

◆ toPoint2D() [3/3]

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

inline

Definition at line 156 of file CV2DI.H.

◆ toPoint()

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

inline

Definition at line 162 of file CV2DI.H.

References p.

◆ toPoint3D() [2/2]

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

inline

Definition at line 170 of file CV2DI.H.

◆ insertPoints() [1/2]

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.

References points.

◆ insertPoints() [2/2]

void insertPoints ( const fileName & pointFileName )

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

file. Points outside the geometry are ignored.

◆ insertGrid()

void insertGrid ( )

Create the initial mesh as a regular grid of points.

Points outside the geometry are ignored.

◆ insertSurfacePointPairs()

void insertSurfacePointPairs ( )

Insert all surface point-pairs from.

insertSurfaceNearestPointPairs and findIntersectionForOutsideCentroid

◆ boundaryConform()

void boundaryConform ( )

Insert point-pairs where there are protrusions into.

or out of the surface

◆ removeSurfacePointPairs()

void removeSurfacePointPairs ( )

Remove the point-pairs introduced by insertSurfacePointPairs.

and boundaryConform

◆ movePoint()

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

inline

Definition at line 176 of file CV2DI.H.

References insert().

Here is the call graph for this function:

◆ newPoints()

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

◆ extractPatches()

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

Extract patch names and sizes.

References patchNames().

Here is the call graph for this function:

◆ writePoints()

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

Write internal points to .obj file.

◆ writeTriangles()

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

Write triangles as .obj file.

◆ writeFaces()

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

Write dual faces as .obj file.

◆ calcDual()

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)

References patchNames().

Here is the call graph for this function:

◆ writePatch()

void writePatch ( const fileName & fName ) const

Write patch.

◆ write()

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

◆ point2DFromPoint

◆ PointFromPoint2D

Constructor & Destructor Documentation

◆ CV2D()

◆ ~CV2D()

Member Function Documentation

◆ ClassName()

◆ meshControls()

◆ toPoint2D() [1/3]

◆ toPoint2D() [2/3]

◆ toPoint3D() [1/2]

◆ toPoint2D() [3/3]

◆ toPoint()

◆ toPoint3D() [2/2]

◆ insertPoints() [1/2]

◆ insertPoints() [2/2]

◆ insertGrid()

◆ insertSurfacePointPairs()

◆ boundaryConform()

◆ removeSurfacePointPairs()

◆ movePoint()

◆ newPoints()

◆ extractPatches()

◆ writePoints()

◆ writeTriangles()

◆ writeFaces()

◆ calcDual()

◆ writePatch()

◆ write()