opttyp_3d.c File Reference

Functions for the optimization of very bad elements. More...

#include "inlined_functions_3d.h"

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Functions
static int	MMG3D_typelt (MMG5_pMesh mesh, int iel, int *item)
int	MMG3D_swpItem (MMG5_pMesh mesh, MMG5_pSol met, MMG3D_pPROctree PROctree, int k, int iar)
static int	MMG3D_swpalmostall (MMG5_pMesh mesh, MMG5_pSol met, MMG3D_pPROctree PROctree, int k, int iar)
int	MMG3D_splitItem (MMG5_pMesh mesh, MMG5_pSol met, MMG3D_pPROctree PROctree, int k, int iar, double OCRIT)
static int	MMG3D_splitalmostall (MMG5_pMesh mesh, MMG5_pSol met, MMG3D_pPROctree PROctree, int k, int iar)
int	MMG3D_opttyp (MMG5_pMesh mesh, MMG5_pSol met, MMG3D_pPROctree PROctree, int testmark)

Detailed Description

Functions for the optimization of very bad elements.

Author

Cécile Dobrzynski (Bx INP/Inria/UBordeaux)

Algiane Froehly (Inria/UBordeaux)

Version

5

Copyright

GNU Lesser General Public License.

Function Documentation

MMG3D_opttyp()

int MMG3D_opttyp	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		MMG3D_pPROctree	PROctree,
		int	testmark
	)

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
PROctree	pointer toward the PROctree structure.
testmark	all the tets with a mark less than testmark will not be treated.

Returns

0 if fail, number of improved elts otherwise.

Travel across the mesh to detect element with very bad quality (less than 0.2) and try to improve them by every means.

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MMG3D_splitalmostall()

static int MMG3D_splitalmostall ( MMG5_pMesh  mesh, MMG5_pSol  met, MMG3D_pPROctree  PROctree, int  k, int  iar  )

inlinestatic

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
PROctree	pointer toward the PROctree structure.
k	elt index.
iar	index of edge to not split.

Returns

1 if success, 0 otherwise

Try to split evry edge of tetra k except of edge number iar.

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MMG3D_splitItem()

int MMG3D_splitItem	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		MMG3D_pPROctree	PROctree,
		int	k,
		int	iar,
		double	OCRIT
	)

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
PROctree	pointer toward the PROctree structure.
k	elt index.
iar	index of edge to split.
OCRIT	quality threshold.

Returns

1 if success, 0 otherwise

Try to split edge number iar of tetra k

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MMG3D_swpalmostall()

static int MMG3D_swpalmostall ( MMG5_pMesh  mesh, MMG5_pSol  met, MMG3D_pPROctree  PROctree, int  k, int  iar  )

inlinestatic

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
PROctree	pointer toward the PROctree structure.
k	elt index.
iar	index of edge to not try to swap.

Returns

-1 if fail, 0 if we don't swap anything, 1 otherwise.

Try to swap all edges of tetra k except of the edge number iar.

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MMG3D_swpItem()

int MMG3D_swpItem	(	MMG5_pMesh	mesh,
		MMG5_pSol	met,
		MMG3D_pPROctree	PROctree,
		int	k,
		int	iar
	)

Parameters

mesh	pointer toward the mesh structure.
met	pointer toward the metric structure.
PROctree	pointer toward the PROctree structure.
k	elt index.
iar	index of edge to not try to swap.

Returns

-1 if fail, 0 if we don't swap anything, 1 otherwise.

Try to swap edge iar of tetra k.

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MMG3D_typelt()

static int MMG3D_typelt ( MMG5_pMesh  mesh, int  iel, int *  item  )

static

Parameters

mesh	pointer toward the mesh structure.
iel	element index.
item	bad entity.

Returns

-1 if fail, element type otherwise.

Identify the type of element.
Type:

• 0: element is ok.
• 1: empty volume but 4 valid faces (sliver)
• 2: empty volume and a vertex close to the opposite face. 4 valid faces (chinese hat).
• 3: 3 valid faces, 1 obtuse face (aileron)
• 4: 2 valid faces, 2 acute faces (=> 1 small edge)
• 5: 1 valid face, 3 small edges
• 6: 2 faces with big edges, 2 faces with small edges
• 7: 4 faces with big edges

Element caracteristics by type:

• 0: 0 obtuse face, 0 acute face, 0 big edge, 0 small edge.
• 1: 0 obtuse face, 0 acute face, 0 big edge, 0 small edge.
• 2: 0 obtuse face, 0 acute face, 0 big edge, 0 small edge.
• 3: 1 obtuse face, 0 acute face, 1 big edge, 0 small edge.
• 4: 0 obtuse face, 2 acute face, 0 big edge, 1 small edge.
• 5: 0 obtuse face, 3 acute face, 0 big edge, 3 small edge.
• 6: 2 obtuse face, 2 acute face, 1 big edge, 1 small edge.
• 7: 0 obtuse face, 4 acute face, 0 big edge, 2 small edge.

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