colver_3d.c File Reference

Functions for vertices collapsing. More...

#include "inlined_functions_3d.h"

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Functions
int	MMG5_chkcol_int (MMG5_pMesh mesh, MMG5_pSol met, int k, int8_t iface, int8_t iedg, int *list, int ilist, int8_t typchk)
static int	MMG5_topchkcol_bdy (MMG5_pMesh mesh, int k, int iface, int8_t iedg, int *lists, int ilists)
int	MMG5_chkcol_bdy (MMG5_pMesh mesh, MMG5_pSol met, int k, int8_t iface, int8_t iedg, int *listv, int ilistv, int *lists, int ilists, int refmin, int refplus, int8_t typchk, int isnm)
int	MMG5_chkcol_nomint (MMG5_pMesh mesh, MMG5_pSol met, int k, int8_t iface, int8_t iedg, int *listv, int ilistv, int8_t typchk)
int	MMG5_colver (MMG5_pMesh mesh, MMG5_pSol met, int *list, int ilist, int8_t indq, int8_t typchk)

Variables
int8_t	ddb

Detailed Description

Functions for vertices collapsing.

Author

Charles Dapogny (UPMC)

Cécile Dobrzynski (Bx INP/Inria/UBordeaux)

Pascal Frey (UPMC)

Algiane Froehly (Inria/UBordeaux)

Version

5

Copyright

GNU Lesser General Public License.

Todo:

doxygen documentation.

Function Documentation

MMG5_chkcol_bdy()

int MMG5_chkcol_bdy	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		int	k,
		int8_t	iface,
		int8_t	iedg,
		int *	listv,
		int	ilistv,
		int *	lists,
		int	ilists,
		int	refmin,
		int	refplus,
		int8_t	typchk,
		int	isnm
	)

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
k	index of element in which we collapse.
iface	face through wich we perform the collapse
iedg	edge to collapse (in local face num)
listv	pointer toward the list of the tetra in the ball of p0.
ilistv	number of tetra in the ball of p0.
lists	pointer toward the surfacic ball of p0.
ilists	number of tetra in the surfacic ball of p0.
refmin	reference of one of the two subdomains in presence
refplus	reference of the other subdomain in presence
typchk	typchk type of checking permformed for edge length (hmax or MMG3D_LLONG criterion).
isnm	1 if edge is non-manifold

Returns

ilistv if success, 0 if the point cannot be collapsed, -1 if fail.

Check whether collapse ip -> iq could be performed, ip boundary point ; 'mechanical' tests (positive jacobian) are not performed here ; iface = boundary face on which lie edge iedg - in local face num. (pq, or ia in local tet notation). If isnm is 1, the collapse occurs along an external MG_NOM edge.

Remarks

we don't check edge lengths.

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MMG5_chkcol_int()

int MMG5_chkcol_int	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		int	k,
		int8_t	iface,
		int8_t	iedg,
		int *	list,
		int	ilist,
		int8_t	typchk
	)

Check whether collapse ip -> iq could be performed, ip internal ; 'mechanical' tests (positive jacobian) are not performed here

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MMG5_chkcol_nomint()

int MMG5_chkcol_nomint	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		int	k,
		int8_t	iface,
		int8_t	iedg,
		int *	listv,
		int	ilistv,
		int8_t	typchk
	)

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
k	index of element in which we collapse.
iface	face through wich we perform the collapse
iedg	edge to collapse (in local face num)
listv	pointer toward the list of the tetra in the ball of p0.
ilistv	number of tetra in the ball of p0.
typchk	typchk type of checking permformed for edge length (hmax or MMG3D_LLONG criterion).

Returns

1 if success, 0 if the point cannot be collapsed, -1 if fail.

Check whether collapse ip -> iq could be performed, ip internal non manifold point; 'mechanical' tests (positive jacobian) are not performed here ; iface = boundary face on which lie edge iedg - in local face num. (pq, or ia in local tet notation).

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MMG5_colver()

int MMG5_colver	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		int *	list,
		int	ilist,
		int8_t	indq,
		int8_t	typchk
	)

Parameters

mesh	pointer toward the mesh
met	pointer toward the metric
list	pointer toward the ball of the point
ilist	number of elements in the ball of the point
indq	local index of the point on which we collapse
typchk	type of check performed depending on the remeshing step

Returns

np the index of the collpased point if success, 0 if we cannot collapse, -1 if we fail.

Collapse vertex p = list[0]%4 of tetra list[0]/4 over vertex indq of tetra list[0]/4. Only physical tests (positive jacobian) are done (i.e. approximation of the surface, etc... must be performed outside).

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MMG5_topchkcol_bdy()

static int MMG5_topchkcol_bdy ( MMG5_pMesh  mesh, int  k, int  iface, int8_t  iedg, int *  lists, int  ilists  )

static

Parameters

mesh	pointer toward the mesh structure.
k	index of the starting tetra.
iface	local index of the starting face in the tetra k.
ideg	local index of the starting edge in the face iface.
lists	surfacic ball of p.
ilists	number of elements in the surfacic ball of p.

Returns

0 if the check of the topology fails, 1 if success, -1 if the function fails.

Topological check on the surface ball of np and nq in collapsing np->nq ; iface = boundary face on which lie edge iedg - in local face num. (pq, or ia in local tet notation). See the Mmg Google Drive/Documentation/mmg3d/topchkcol_bdy3D.pdf for a picture of the configuration.

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Variable Documentation

ddb

int8_t ddb