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020674: EDF 870 SMESH: Mesh generated by Netgen not usable by GHS3D

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avoid creating degenetrated faces
This commit is contained in:
eap 2010-02-01 13:29:23 +00:00
parent d7c779851c
commit 8d2789db83
1 changed files with 35 additions and 8 deletions
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43
src/StdMeshers/StdMeshers_MEFISTO_2D.cxx
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@ -604,8 +604,31 @@ bool StdMeshers_MEFISTO_2D::LoadPoints(TWireVector & wires,
// set UV
uvslf[m].x = uvPt->u * scalex;
uvslf[m].y = uvPt->v * scaley;
if ( uvPt->node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX )
switch ( uvPt->node->GetPosition()->GetTypeOfPosition())
{
case SMDS_TOP_VERTEX:
mOnVertex.push_back( m );
break;
case SMDS_TOP_EDGE:
// In order to detect degenerated faces easily, we replace
// nodes on a degenerated edge by node on the vertex of that edge
if ( myTool->IsDegenShape( uvPt->node->GetPosition()->GetShapeId() ))
{
int edgeID = uvPt->node->GetPosition()->GetShapeId();
SMESH_subMesh* edgeSM = myTool->GetMesh()->GetSubMeshContaining( edgeID );
SMESH_subMeshIteratorPtr smIt = edgeSM->getDependsOnIterator( /*includeSelf=*/0,
/*complexShapeFirst=*/0);
if ( smIt->more() )
{
SMESH_subMesh* vertexSM = smIt->next();
SMDS_NodeIteratorPtr nIt = vertexSM->GetSubMeshDS()->GetNodes();
if ( nIt->more() )
mefistoToDS[m] = nIt->next();
}
}
break;
default:;
}
m++;
}
@ -778,13 +801,17 @@ void StdMeshers_MEFISTO_2D::StoreResult(Z nbst, R2 * uvst, Z nbt, Z * nust,
const SMDS_MeshNode * n2 = mefistoToDS[ nust[m++] - 1 ];
const SMDS_MeshNode * n3 = mefistoToDS[ nust[m++] - 1 ];
SMDS_MeshElement * elt;
if (triangleIsWellOriented)
elt = myTool->AddFace(n1, n2, n3);
else
elt = myTool->AddFace(n1, n3, n2);
meshDS->SetMeshElementOnShape(elt, faceID);
// avoid creating degenetrated faces
bool isDegen = ( myTool->HasDegenenaratedEdges() && ( n1 == n2 || n1 == n3 || n2 == n3 ));
if ( !isDegen )
{
SMDS_MeshElement * elt;
if (triangleIsWellOriented)
elt = myTool->AddFace(n1, n2, n3);
else
elt = myTool->AddFace(n1, n3, n2);
meshDS->SetMeshElementOnShape(elt, faceID);
}
m++;
}