Perform volume and surface mesh adaptation in delaunay mode. More...

#include "libmmg3d.h"
#include "libmmg3d_private.h"
#include "mmg3dexterns_private.h"

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Macros
#define	MMG3D_THRES_DEL 1.6

#define	MMG3D_LOPTL_DEL 1.41

#define	MMG3D_LFILTS_DEL 0.7

#define	MMG3D_LFILTL_DEL 0.2

Functions
static int	MMG3D_mmg3d1_delone_split (MMG5_pMesh mesh, MMG5_pSol met, MMG3D_pPROctree PROctree, MMG5_int k, int8_t imax, double lmax, double lmaxtet, int8_t chkRidTet, MMG5_int ifilt, MMG5_int ns, int warn, int8_t *countMemFailure)

static int	MMG3D_mmg3d1_delone_splcol (MMG5_pMesh mesh, MMG5_pSol met, MMG3D_pPROctree PROctree, MMG5_int k, int8_t imin, double lmin, int8_t imax, double lmax, double lmaxtet, int8_t chkRidTet, MMG5_int ifilt, MMG5_int ns, MMG5_int nc, int *warn)

static int	MMG5_adpsplcol (MMG5_pMesh mesh, MMG5_pSol met, MMG3D_pPROctree PROctree, MMG5_int ne, MMG5_int ifilt, MMG5_int ns, MMG5_int nc, int *warn)

static int	MMG5_optbad (MMG5_pMesh mesh, MMG5_pSol met, MMG3D_pPROctree PROctree)

static int	MMG5_adpdel (MMG5_pMesh mesh, MMG5_pSol met, MMG3D_pPROctree PROctree, int warn)

static int	MMG5_optetLES (MMG5_pMesh mesh, MMG5_pSol met, MMG3D_pPROctree PROctree)

static int	MMG5_optet (MMG5_pMesh mesh, MMG5_pSol met, MMG3D_pPROctree PROctree)

static int	MMG5_adptet_delone (MMG5_pMesh mesh, MMG5_pSol met, MMG3D_pPROctree PROctree, MMG5_int permNodGlob)

int	MMG5_mmg3d1_delone (MMG5_pMesh mesh, MMG5_pSol met, MMG5_int *permNodGlob)

Variables
int8_t	ddb

Detailed Description

Perform volume and surface mesh adaptation in delaunay mode.

Author: Cécile Dobrzynski (Bx INP/Inria/UBordeaux)

Version: 5

Copyright: GNU Lesser General Public License.

Perform volume and surface mesh adaptation in delaunay mode (MMG_PATTERN preprocessor flag set to OFF).

Definition in file mmg3d1_delone.c.

Macro Definition Documentation

◆ MMG3D_LFILTL_DEL

#define MMG3D_LFILTL_DEL 0.2

Definition at line 47 of file mmg3d1_delone.c.

◆ MMG3D_LFILTS_DEL

#define MMG3D_LFILTS_DEL 0.7

Definition at line 46 of file mmg3d1_delone.c.

◆ MMG3D_LOPTL_DEL

#define MMG3D_LOPTL_DEL 1.41

Definition at line 45 of file mmg3d1_delone.c.

◆ MMG3D_THRES_DEL

#define MMG3D_THRES_DEL 1.6

Definition at line 44 of file mmg3d1_delone.c.

Function Documentation

◆ MMG3D_mmg3d1_delone_splcol()

static int MMG3D_mmg3d1_delone_splcol	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		MMG3D_pPROctree *	PROctree,
		MMG5_int	k,
		int8_t	imin,
		double	lmin,
		int8_t	imax,
		double	lmax,
		double	lmaxtet,
		int8_t	chkRidTet,
		MMG5_int *	ifilt,
		MMG5_int *	ns,
		MMG5_int *	nc,
		int *	warn
	)

inlinestatic

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
PROctree	pointer toward the PROctree structure.
k	index of tetra in which we work.
imin	index in k of edge that we consider for split.
lmin	length of edge imax.
imax	index in k of edge that we consider for split.
lmax	length of edge imax.
lmaxtet	length of largest edge of tetra k.
1	if we want to check tetra with 4 ridge metrics.
ifilt	pointer to store the number of vertices filtered by the PROctree.
ns	pointer toward count of splits (has to be updated)
nc	pointer toward count of collapses (has to be updated)
warn	pointer to store a flag that warn the user in case of reallocation error.

Returns: -2 for low failure (mesh has to be saved).; -1 for strong failure.; 0 if edge cannot be modified and if we want to pass to next loop step (next element or next tetra edge); 1 if edge cannot be modified and we want to treat next elt; 2 if edge has been modified and we want to treat next element.; 3 if nothing has been done (no error but no edge modification either).

Try to split imax edge if too large and to collapse imin edge if too small.

If unable to treat edge with ier==1 return value or if edge has not been splitted but slpit_delone has not raised any error: try to collapse short edge.

Try to merge small edge: if collapse is not possible, pass to next element

Definition at line 355 of file mmg3d1_delone.c.

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◆ MMG3D_mmg3d1_delone_split()

static int MMG3D_mmg3d1_delone_split	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		MMG3D_pPROctree *	PROctree,
		MMG5_int	k,
		int8_t	imax,
		double	lmax,
		double	lmaxtet,
		int8_t	chkRidTet,
		MMG5_int *	ifilt,
		MMG5_int *	ns,
		int *	warn,
		int8_t *	countMemFailure
	)

inlinestatic

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
PROctree	pointer toward the PROctree structure.
k	index of tetra in which we work.
imax	index in k of edge that we consider for split.
lmax	length of edge imax.
lmaxtet	length of largest edge of tetra k.
1	if we want to check tetra with 4 ridge metrics.
ifilt	pointer to store the number of vertices filtered by the PROctree.
ns	pointer toward count of splits (has to be updated)
warn	pointer to store a flag that warn the user in case of reallocation error.
countMemFailure	number of memory errors (to update)

Returns: -2 for low failure (mesh has to be saved).; -1 for strong failure.; 0 if edge cannot be splitted and if we want to pass to next loop step (next element or next tetra edge); 1 if edge cannot be splitted and we want to try to collapse too long edge.; 2 if edge has been splitted and we want to treat next element.; 3 if nothing has been done (no error but no split either).

Try to split imax if too large.

Get edge infos

Check edge length

Edge belongs to a boundary face: try to split using patterns

b/ Edge splitting

Case of a tetra without xtetra (no boundary faces): split non-bdy edges with Delauney kernel.

Definition at line 82 of file mmg3d1_delone.c.

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◆ MMG5_adpdel()

static int MMG5_adpdel	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		MMG3D_pPROctree *	PROctree,
		int *	warn
	)

static

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
PROctree	pointer toward the PROctree structure.
warn	set to 1 if we can't insert point due to lack of memory.

Returns: -1 if fail and we dont try to end the remesh process, 0 if fail but we try to end the remesh process and 1 if success.

Split edges longer than MMG3D_LOPTL_DEL and collapse edges shorter than MMG3D_LOPTS.

Definition at line 638 of file mmg3d1_delone.c.

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◆ MMG5_adpsplcol()

static int MMG5_adpsplcol	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		MMG3D_pPROctree *	PROctree,
		MMG5_int	ne,
		MMG5_int *	ifilt,
		MMG5_int *	ns,
		MMG5_int *	nc,
		int *	warn
	)

inlinestatic

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
PROctree	pointer toward the PROctree structure.
ne	number of elements.
ifilt	pointer to store the number of vertices filtered by the PROctree.
ns	pointer to store the number of vertices insertions.
nc	pointer to store the number of collapse.
warn	pointer to store a flag that warn the user in case of reallocation difficulty.

Returns: -1 if fail and we don't save the mesh, 0 if fail but we try to save the mesh, 1 otherwise.

adpsplcol loop: split edges longer than MMG3D_LOPTL_DEL and collapse edges shorter than MMG3D_LOPTS.

Step 1: find longest and shortest edge (and try to manage them)

Step 2: longest and shortest edges are stucked => try the other edges

Try to split too long edge

Definition at line 423 of file mmg3d1_delone.c.

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◆ MMG5_adptet_delone()

static int MMG5_adptet_delone	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		MMG3D_pPROctree *	PROctree,
		MMG5_int *	permNodGlob
	)

static

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
PROctree	pointer toward the PROctree structure.
permNodGlob	if provided, strore the global permutation of nodes

Returns: 0 if failed, 1 otherwise.

Analyze tetrahedra and split long / collapse short, according to prescribed metric.

Step 1: few iters of swaps

Step 2: few iters of splits, collapses, swaps and moves

Step 3: Last wave of improvements: few iters of bad elts treatment, swaps and moves

Definition at line 955 of file mmg3d1_delone.c.

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◆ MMG5_mmg3d1_delone()

int MMG5_mmg3d1_delone	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		MMG5_int *	permNodGlob
	)

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
permNodGlob	if provided, strore the global permutation of nodes

Returns: 0 if failed, 1 if success.

Main adaptation routine.

— stage 1: geometric mesh

— stage 2: computational mesh

Definition at line 1028 of file mmg3d1_delone.c.

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◆ MMG5_optbad()

static int MMG5_optbad	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		MMG3D_pPROctree	PROctree
	)

static

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
PROctree	pointer toward the PROctree structure.

Returns: 0 if failed, 1 otherwise.

Mesh optimization during insertion phase.

Definition at line 562 of file mmg3d1_delone.c.

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◆ MMG5_optet()

static int MMG5_optet	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		MMG3D_pPROctree	PROctree
	)

static

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
PROctree	pointer toward the PROctree structure.

Returns: 0 if failed, 1 otherwise.

Mesh optimization using egde swapping and point relocation.

Definition at line 846 of file mmg3d1_delone.c.

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◆ MMG5_optetLES()

static int MMG5_optetLES	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		MMG3D_pPROctree	PROctree
	)

static

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
PROctree	pointer toward the PROctree structure.

Returns: 0 if failed, 1 otherwise.

Mesh optimization for LES computation (improve the element skewness).

Definition at line 752 of file mmg3d1_delone.c.

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Variable Documentation

◆ ddb

int8_t ddb

Definition at line 42 of file mmg3d1_delone.c.

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ MMG3D_LFILTL_DEL

◆ MMG3D_LFILTS_DEL

◆ MMG3D_LOPTL_DEL

◆ MMG3D_THRES_DEL

Function Documentation

◆ MMG3D_mmg3d1_delone_splcol()

◆ MMG3D_mmg3d1_delone_split()

◆ MMG5_adpdel()

◆ MMG5_adpsplcol()

◆ MMG5_adptet_delone()

◆ MMG5_mmg3d1_delone()

◆ MMG5_optbad()

◆ MMG5_optet()

◆ MMG5_optetLES()

Variable Documentation

◆ ddb