*/
//=============================================================================
+/**
+ * @brief Get an iterator on the Surface element with their orientation
+ *
+ */
+
+ bool getSurfaceElements(
+ SMESH_Mesh& aMesh,
+ const TopoDS_Shape& aShape,
+ SMESH_ProxyMesh::Ptr proxyMesh,
+ NETGENPlugin_Internals &internals,
+ SMESH_MesherHelper &helper,
+ netgen_params &aParams,
+ std::map<const SMDS_MeshElement*, tuple<bool, bool>>& listElements
+)
+{
+ SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
+ TopAbs_ShapeEnum mainType = aMesh.GetShapeToMesh().ShapeType();
+ bool checkReverse = ( mainType == TopAbs_COMPOUND || mainType == TopAbs_COMPSOLID );
+
+ for ( TopExp_Explorer exFa( aShape, TopAbs_FACE ); exFa.More(); exFa.Next())
+ {
+ const TopoDS_Shape& aShapeFace = exFa.Current();
+ int faceID = meshDS->ShapeToIndex( aShapeFace );
+ bool isInternalFace = internals.isInternalShape( faceID );
+ bool isRev = false;
+ if ( checkReverse && !isInternalFace &&
+ helper.NbAncestors(aShapeFace, aMesh, aShape.ShapeType()) > 1 )
+ // IsReversedSubMesh() can work wrong on strongly curved faces,
+ // so we use it as less as possible
+ isRev = helper.IsReversedSubMesh( TopoDS::Face( aShapeFace ));
+
+ const SMESHDS_SubMesh * aSubMeshDSFace = proxyMesh->GetSubMesh( aShapeFace );
+ if ( !aSubMeshDSFace ) continue;
+
+ SMDS_ElemIteratorPtr iteratorElem = aSubMeshDSFace->GetElements();
+ if ( aParams._quadraticMesh &&
+ dynamic_cast< const SMESH_ProxyMesh::SubMesh*>( aSubMeshDSFace ))
+ {
+ // add medium nodes of proxy triangles to helper (#16843)
+ while ( iteratorElem->more() )
+ helper.AddTLinks( static_cast< const SMDS_MeshFace* >( iteratorElem->next() ));
+
+ iteratorElem = aSubMeshDSFace->GetElements();
+ }
+ while(iteratorElem->more()){
+ const SMDS_MeshElement* elem = iteratorElem->next();
+ // check mesh face
+ if ( !elem ){
+ aParams._error = COMPERR_BAD_INPUT_MESH;
+ aParams._comment = "Null element encounters";
+ return true;
+ }
+ if ( elem->NbCornerNodes() != 3 ){
+ aParams._error = COMPERR_BAD_INPUT_MESH;
+ aParams._comment = "Not triangle element encounters";
+ return true;
+ }
+ listElements[elem] = tuple(isRev, isInternalFace);
+ }
+ }
+
+ return false;
+}
+
bool NETGENPlugin_NETGEN_3D::computeFillNgMesh(
SMESH_Mesh& aMesh,
// ---------------------------------
// Feed the Netgen with surface mesh
// ---------------------------------
-
- TopAbs_ShapeEnum mainType = aMesh.GetShapeToMesh().ShapeType();
- bool checkReverse = ( mainType == TopAbs_COMPOUND || mainType == TopAbs_COMPSOLID );
+ bool isRev=false;
+ bool isInternalFace=false;
SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
if ( aParams._viscousLayersHyp )
proxyMesh.reset( Adaptor );
}
- for ( TopExp_Explorer exFa( aShape, TopAbs_FACE ); exFa.More(); exFa.Next())
+ std::map<const SMDS_MeshElement*, tuple<bool, bool>> listElements;
+ bool ret = getSurfaceElements(aMesh, aShape, proxyMesh, internals, helper, aParams, listElements);
+ if(ret)
+ return ret;
+
+ for ( auto const& [elem, info] : listElements ) // loop on elements on a geom face
{
- const TopoDS_Shape& aShapeFace = exFa.Current();
- int faceID = meshDS->ShapeToIndex( aShapeFace );
- bool isInternalFace = internals.isInternalShape( faceID );
- bool isRev = false;
- if ( checkReverse && !isInternalFace &&
- helper.NbAncestors(aShapeFace, aMesh, aShape.ShapeType()) > 1 )
- // IsReversedSubMesh() can work wrong on strongly curved faces,
- // so we use it as less as possible
- isRev = helper.IsReversedSubMesh( TopoDS::Face( aShapeFace ));
-
- const SMESHDS_SubMesh * aSubMeshDSFace = proxyMesh->GetSubMesh( aShapeFace );
- if ( !aSubMeshDSFace ) continue;
-
- SMDS_ElemIteratorPtr iteratorElem = aSubMeshDSFace->GetElements();
- if ( aParams._quadraticMesh &&
- dynamic_cast< const SMESH_ProxyMesh::SubMesh*>( aSubMeshDSFace ))
- {
- // add medium nodes of proxy triangles to helper (#16843)
- while ( iteratorElem->more() )
- helper.AddTLinks( static_cast< const SMDS_MeshFace* >( iteratorElem->next() ));
+ isRev = get<0>(info);
+ isInternalFace = get<1>(info);
+ // Add nodes of triangles and triangles them-selves to netgen mesh
- iteratorElem = aSubMeshDSFace->GetElements();
- }
- while ( iteratorElem->more() ) // loop on elements on a geom face
+ // add three nodes of triangle
+ bool hasDegen = false;
+ for ( int iN = 0; iN < 3; ++iN )
{
- // check mesh face
- const SMDS_MeshElement* elem = iteratorElem->next();
- if ( !elem ){
- aParams._error = COMPERR_BAD_INPUT_MESH;
- aParams._comment = "Null element encounters";
- return true;
- }
- if ( elem->NbCornerNodes() != 3 ){
- aParams._error = COMPERR_BAD_INPUT_MESH;
- aParams._comment = "Not triangle element encounters";
- return true;
+ const SMDS_MeshNode* node = elem->GetNode( iN );
+ const int shapeID = node->getshapeId();
+ if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_EDGE &&
+ helper.IsDegenShape( shapeID ))
+ {
+ // ignore all nodes on degeneraged edge and use node on its vertex instead
+ TopoDS_Shape vertex = TopoDS_Iterator( meshDS->IndexToShape( shapeID )).Value();
+ node = SMESH_Algo::VertexNode( TopoDS::Vertex( vertex ), meshDS );
+ hasDegen = true;
}
-
- // Add nodes of triangles and triangles them-selves to netgen mesh
-
- // add three nodes of triangle
- bool hasDegen = false;
- for ( int iN = 0; iN < 3; ++iN )
+ int& ngID = nodeToNetgenID.insert(TN2ID( node, invalid_ID )).first->second;
+ if ( ngID == invalid_ID )
{
- const SMDS_MeshNode* node = elem->GetNode( iN );
- const int shapeID = node->getshapeId();
- if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_EDGE &&
- helper.IsDegenShape( shapeID ))
- {
- // ignore all nodes on degeneraged edge and use node on its vertex instead
- TopoDS_Shape vertex = TopoDS_Iterator( meshDS->IndexToShape( shapeID )).Value();
- node = SMESH_Algo::VertexNode( TopoDS::Vertex( vertex ), meshDS );
- hasDegen = true;
- }
- int& ngID = nodeToNetgenID.insert(TN2ID( node, invalid_ID )).first->second;
- if ( ngID == invalid_ID )
- {
- ngID = ++Netgen_NbOfNodes;
- Netgen_point [ 0 ] = node->X();
- Netgen_point [ 1 ] = node->Y();
- Netgen_point [ 2 ] = node->Z();
- Ng_AddPoint(Netgen_mesh, Netgen_point);
- }
- Netgen_triangle[ isRev ? 2-iN : iN ] = ngID;
+ ngID = ++Netgen_NbOfNodes;
+ Netgen_point [ 0 ] = node->X();
+ Netgen_point [ 1 ] = node->Y();
+ Netgen_point [ 2 ] = node->Z();
+ Ng_AddPoint(Netgen_mesh, Netgen_point);
}
- // add triangle
- if ( hasDegen && (Netgen_triangle[0] == Netgen_triangle[1] ||
- Netgen_triangle[0] == Netgen_triangle[2] ||
- Netgen_triangle[2] == Netgen_triangle[1] ))
- continue;
+ Netgen_triangle[ isRev ? 2-iN : iN ] = ngID;
+ }
+ // add triangle
+ if ( hasDegen && (Netgen_triangle[0] == Netgen_triangle[1] ||
+ Netgen_triangle[0] == Netgen_triangle[2] ||
+ Netgen_triangle[2] == Netgen_triangle[1] ))
+ continue;
- Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
+ Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
- if ( isInternalFace && !proxyMesh->IsTemporary( elem ))
- {
- swap( Netgen_triangle[1], Netgen_triangle[2] );
- Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
- }
- } // loop on elements on a face
- } // loop on faces of a SOLID or SHELL
+ if ( isInternalFace && !proxyMesh->IsTemporary( elem ))
+ {
+ swap( Netgen_triangle[1], Netgen_triangle[2] );
+ Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
+ }
+ } // loop on elements on a face
// insert old nodes into nodeVec
nodeVec.resize( nodeToNetgenID.size() + 1, 0 );
