mmg2d9.c File Reference

Lagrangian meshing. More...

#include "mmg2d.h"

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Macros
#define	MMG2D_DEGTOL   5.e-1

Functions
double	MMG2D_estavglen (MMG5_pMesh mesh)
static double	MMG2D_caltri_iso_3pt (double *a, double *b, double *c)
int	MMG2D_chkmovmesh (MMG5_pMesh mesh, MMG5_pSol disp, short t, int *triIdx)
short	MMG2D_dikomv (MMG5_pMesh mesh, MMG5_pSol disp, short *lastt)
int	MMG2D_dispmesh (MMG5_pMesh mesh, MMG5_pSol disp, short t, int itdeg)
int	MMG2D_spllag (MMG5_pMesh mesh, MMG5_pSol disp, MMG5_pSol met, int itdeg, int *warn)
static int	MMG2D_coleltlag (MMG5_pMesh mesh, MMG5_pSol met, int itdeg)
int	MMG2D_swpmshlag (MMG5_pMesh mesh, MMG5_pSol met, double crit, int itdeg)
int	MMG2D_saveDisp (MMG5_pMesh mesh, MMG5_pSol disp)
int	MMG2D_movtrilag (MMG5_pMesh mesh, MMG5_pSol met, int itdeg)
int	MMG2D_mmg2d9 (MMG5_pMesh mesh, MMG5_pSol disp, MMG5_pSol met, int **invalidTrias)

Detailed Description

Lagrangian meshing.

Velocity extension for Lagrangian meshing.

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

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

Macro Definition Documentation

MMG2D_DEGTOL

#define MMG2D_DEGTOL   5.e-1

Function Documentation

MMG2D_caltri_iso_3pt()

static double MMG2D_caltri_iso_3pt ( double *  a, double *  b, double *  c  )

inlinestatic

Compute quality of a triangle from the datum of its 3 vertices

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MMG2D_chkmovmesh()

int MMG2D_chkmovmesh	(	MMG5_pMesh	mesh,
		MMG5_pSol	disp,
		short	t,
		int *	triIdx
	)

Parameters

mesh	pointer toward the mesh structure
disp	pointer toward the displacement structure.
t	fraction of displacement to test
tetIdx	to fill with the list of non valid tria if provided.

Returns

0 if success (movement can be achieved), 1 or the number of invalid tria otherwise.

Check if moving mesh with disp for a fraction t yields a valid mesh.

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MMG2D_coleltlag()

static int MMG2D_coleltlag ( MMG5_pMesh  mesh, MMG5_pSol  met, int  itdeg  )

static

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
itdeg	degraded elements.

Returns

-1 if failed.

number of collapsed points.

Attempt to collapse small internal edges in the Lagrangian mode; only affects tria with cc itdeg.

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MMG2D_dikomv()

short MMG2D_dikomv	(	MMG5_pMesh	mesh,
		MMG5_pSol	disp,
		short *	lastt
	)

Parameters

mesh	pointer toward the mesh structure
disp	pointer toward the displacement field
lastt	0 if a movement is possible, pointer toward the last tested fraction otherwise

Return the largest fraction t that makes the motion along disp valid.

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MMG2D_dispmesh()

int MMG2D_dispmesh	(	MMG5_pMesh	mesh,
		MMG5_pSol	disp,
		short	t,
		int	itdeg
	)

Perform mesh motion along disp, for a fraction t, and the corresponding updates

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MMG2D_estavglen()

double MMG2D_estavglen

(

MMG5_pMesh

mesh

)

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MMG2D_mmg2d9()

int MMG2D_mmg2d9	(	MMG5_pMesh	mesh,
		MMG5_pSol	disp,
		MMG5_pSol	met,
		int **	invalidTrias
	)

Parameters

mesh	mesh structure
disp	displacement structure
met	metric structure
invalidTriax	array to store the list of invalid tria if we are unable to move

Returns

0 if fail, 1 if success to move, the opposite of the number of non valid trias if we can't move (-ninvalidTrias).

Lagrangian node displacement and meshing. Code for options: info.lag >= 0 -> displacement, info.lag > 0 -> displacement+remeshing with swap and moves info.lag > 1 -> displacement+remeshing with split+collapse+swap+move

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MMG2D_movtrilag()

int MMG2D_movtrilag	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		int	itdeg
	)

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
itdeg	degraded elements.

Returns

-1 if failed, number of moved points otherwise.

Analyze trias with cc = itdeg and move internal points so as to make mesh more uniform.

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MMG2D_saveDisp()

int MMG2D_saveDisp	(	MMG5_pMesh	mesh,
		MMG5_pSol	disp
	)

For debugging purposes: save disp

MMG2D_spllag()

int MMG2D_spllag	(	MMG5_pMesh	mesh,
		MMG5_pSol	disp,
		MMG5_pSol	met,
		int	itdeg,
		int *	warn
	)

Parameters

mesh	pointer toward the mesh structure.
disp	pointer toward the displacement structure.
met	pointer toward the metric structure.
itdeg	degraded elements.
*warn	warn is set to 1 if not enough memory is available to complete mesh.

Returns

-1 if failed.

number of new points.

Split edges of length bigger than MMG5_LOPTL, in the Lagrangian mode. Only affects triangles with cc itdeg

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MMG2D_swpmshlag()

int MMG2D_swpmshlag	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		double	crit,
		int	itdeg
	)

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
crit	coefficient of quality improvment.
itdeg	degraded elements.

Internal edge flipping in the Lagrangian mode; only affects trias with cc itdeg

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