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Implement better check for over-constrained volumes and faces

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This commit is contained in:
Massimiliano Leoni 2022-01-21 18:44:00 +01:00 committed by Yoann Audouin
parent a9219e5f12
commit 067472c5cf
5 changed files with 31 additions and 35 deletions
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4
doc/salome/examples/quality_controls_ex09.py
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@ -22,6 +22,6 @@ n2 = mesh.AddNode(10,0,0)
edge = mesh.AddEdge([n1,n2]) edge = mesh.AddEdge([n1,n2])
assert( not mesh.GetIdsFromFilter( faceFilter )) assert( not mesh.GetIdsFromFilter( faceFilter ))
# make faces # make faces
mesh.ExtrusionSweep([edge], smesh.MakeDirStruct(0,7,0), 5) mesh.ExtrusionSweep([edge], smesh.MakeDirStruct(0,7,0), 5)
assert( 2 == len( mesh.GetIdsFromFilter( faceFilter ))) assert( 5 == len( mesh.GetIdsFromFilter( faceFilter )))

2
doc/salome/examples/quality_controls_ex10.py
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@ -22,4 +22,4 @@ n2 = mesh.AddNode(10,0,0)
edge = mesh.AddEdge([n1,n2]) edge = mesh.AddEdge([n1,n2])
mesh.ExtrusionSweep([edge], smesh.MakeDirStruct(0,7,0), 1) mesh.ExtrusionSweep([edge], smesh.MakeDirStruct(0,7,0), 1)
mesh.ExtrusionSweep( mesh.GetElementsByType(SMESH.FACE), smesh.MakeDirStruct(0,0,5), 7) mesh.ExtrusionSweep( mesh.GetElementsByType(SMESH.FACE), smesh.MakeDirStruct(0,0,5), 7)
assert( 2 == len( mesh.GetIdsFromFilter( volumeFilter ))) assert( 7 == len( mesh.GetIdsFromFilter( volumeFilter )))

4
doc/salome/gui/SMESH/input/over_constrained_faces.rst
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@ -4,7 +4,7 @@
Over-constrained faces Over-constrained faces
********************** **********************
This mesh quality control highlights faces sharing only one border with other faces. This mesh quality control highlights faces having all their points on the border.
.. note:: .. note::
The highlighted faces are actually over-constrained only if, at the computation time, the boundary conditions on the borders where the nodes are located are all Dirichlet boundary conditions. The highlighted faces are actually over-constrained only if, at the computation time, the boundary conditions on the borders where the nodes are located are all Dirichlet boundary conditions.
@ -15,6 +15,6 @@ This mesh quality control highlights faces sharing only one border with other fa
.. centered:: .. centered::
Over-constrained face is displayed in red Over-constrained face is displayed in red
**See Also** a sample TUI Script of a :ref:`tui_over_constrained_faces` filter. **See Also** a sample TUI Script of a :ref:`tui_over_constrained_faces` filter.

4
doc/salome/gui/SMESH/input/over_constrained_volumes.rst
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@ -4,7 +4,7 @@
Over-constrained volumes Over-constrained volumes
************************ ************************
This mesh quality control highlights volumes sharing only one border with other volumes. This mesh quality control highlights volumes having all their points on the border.
.. note:: .. note::
@ -16,4 +16,4 @@ This mesh quality control highlights volumes sharing only one border with other
.. centered:: .. centered::
Over-constrained volume is displayed in red. Over-constrained volume is displayed in red.
**See Also** a sample TUI Script of a :ref:`tui_over_constrained_volumes` filter. **See Also** a sample TUI Script of a :ref:`tui_over_constrained_volumes` filter.

52
src/Controls/SMESH_Controls.cxx
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@ -2469,16 +2469,22 @@ bool BareBorderFace::IsSatisfy(long theElementId )
bool OverConstrainedVolume::IsSatisfy(long theElementId ) bool OverConstrainedVolume::IsSatisfy(long theElementId )
{ {
// An element is over-constrained if it has N-1 free borders where // An element is over-constrained if all its nodes are on the boundary.
// N is the number of edges/faces for a 2D/3D element. // A node is on the boundary if it is connected to one or more faces.
SMDS_VolumeTool myTool; SMDS_VolumeTool myTool;
if ( myTool.Set( myMesh->FindElement(theElementId))) if (myTool.Set(myMesh->FindElement(theElementId)))
{ {
int nbSharedFaces = 0; auto nodes = myTool.GetNodes();
for ( int iF = 0; iF < myTool.NbFaces(); ++iF )
if ( !myTool.IsFreeFace( iF ) && ++nbSharedFaces > 1 ) for (int i = 0; i < myTool.NbNodes(); ++i)
break; {
return ( nbSharedFaces == 1 ); auto node = nodes[i];
if (node->NbInverseElements(SMDSAbs_Face) == 0)
{
return false;
}
}
return true;
} }
return false; return false;
} }
@ -2491,29 +2497,19 @@ bool OverConstrainedVolume::IsSatisfy(long theElementId )
bool OverConstrainedFace::IsSatisfy(long theElementId ) bool OverConstrainedFace::IsSatisfy(long theElementId )
{ {
// An element is over-constrained if it has N-1 free borders where // An element is over-constrained if all its nodes are on the boundary.
// N is the number of edges/faces for a 2D/3D element. // A node is on the boundary if it is connected to one or more faces.
if ( const SMDS_MeshElement* face = myMesh->FindElement(theElementId)) if (const SMDS_MeshElement *face = myMesh->FindElement(theElementId))
if ( face->GetType() == SMDSAbs_Face ) if (face->GetType() == SMDSAbs_Face)
{ {
int nbSharedBorders = 0;
int nbN = face->NbCornerNodes(); int nbN = face->NbCornerNodes();
for ( int i = 0; i < nbN; ++i ) for (int i = 0; i < nbN; ++i)
{ {
// check if a link is shared by another face const SMDS_MeshNode *n1 = face->GetNode(i);
const SMDS_MeshNode* n1 = face->GetNode( i ); if (n1->NbInverseElements(SMDSAbs_Edge) == 0)
const SMDS_MeshNode* n2 = face->GetNode( (i+1)%nbN ); return false;
SMDS_ElemIteratorPtr fIt = n1->GetInverseElementIterator( SMDSAbs_Face );
bool isShared = false;
while ( !isShared && fIt->more() )
{
const SMDS_MeshElement* f = fIt->next();
isShared = ( f != face && f->GetNodeIndex(n2) != -1 );
}
if ( isShared && ++nbSharedBorders > 1 )
break;
} }
return ( nbSharedBorders == 1 ); return true;
} }
return false; return false;
} }