#include "StdMeshers_FaceSide.hxx"
#include <BRepAdaptor_Curve2d.hxx>
+#include <BRepAdaptor_Surface.hxx>
+#include <BRepLProp_SLProps.hxx>
#include <BRep_Tool.hxx>
#include <Bnd_B2d.hxx>
#include <Bnd_B3d.hxx>
#include <Geom_TrimmedCurve.hxx>
#include <Precision.hxx>
#include <Standard_ErrorHandler.hxx>
+#include <Standard_Failure.hxx>
#include <TColStd_Array1OfReal.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
// edges of _n2eMap. We keep same data in two containers because
// iteration over the map is 5 time longer than over the vector
vector< _LayerEdge* > _edges;
+ // edges on EDGE's with null _sWOL, whose _simplices are used to stop inflation
+ vector< _LayerEdge* > _simplexTestEdges;
// key: an id of shape (EDGE or VERTEX) shared by a FACE with
// layers and a FACE w/o layers
bool makeLayer(_SolidData& data);
bool setEdgeData(_LayerEdge& edge, const set<TGeomID>& subIds,
SMESH_MesherHelper& helper, _SolidData& data);
+ gp_XYZ getWeigthedNormal( const SMDS_MeshNode* n,
+ std::pair< TGeomID, gp_XYZ > fId2Normal[],
+ const int nbFaces );
bool findNeiborsOnEdge(const _LayerEdge* edge,
const SMDS_MeshNode*& n1,
const SMDS_MeshNode*& n2,
const set<TGeomID>& ingnoreShapes,
const _SolidData* dataToCheckOri = 0,
const bool toSort = false);
+ void findSimplexTestEdges( _SolidData& data,
+ vector< vector<_LayerEdge*> >& edgesByGeom);
bool sortEdges( _SolidData& data,
vector< vector<_LayerEdge*> >& edgesByGeom);
void limitStepSize( _SolidData& data,
// get average dir of edges going fromV
gp_XYZ edgeDir;
//if ( edges.size() > 1 )
- for ( size_t i = 0; i < edges.size(); ++i )
- {
- edgeDir = getEdgeDir( edges[i], fromV );
- double size2 = edgeDir.SquareModulus();
- if ( size2 > numeric_limits<double>::min() )
- edgeDir /= sqrt( size2 );
- else
- ok = false;
- dir += edgeDir;
- }
+ for ( size_t i = 0; i < edges.size(); ++i )
+ {
+ edgeDir = getEdgeDir( edges[i], fromV );
+ double size2 = edgeDir.SquareModulus();
+ if ( size2 > numeric_limits<double>::min() )
+ edgeDir /= sqrt( size2 );
+ else
+ ok = false;
+ dir += edgeDir;
+ }
gp_XYZ fromEdgeDir = getFaceDir( F, edges[0], node, helper, ok );
- if ( edges.size() == 1 )
- dir = fromEdgeDir;
- else if ( dir.SquareModulus() < 0.1 ) // ~< 20 degrees
- dir = fromEdgeDir + getFaceDir( F, edges[1], node, helper, ok );
- else if ( dir * fromEdgeDir < 0 )
- dir *= -1;
+ try {
+ if ( edges.size() == 1 )
+ dir = fromEdgeDir;
+ else if ( dir.SquareModulus() < 0.1 ) // ~< 20 degrees
+ dir = fromEdgeDir.Normalized() + getFaceDir( F, edges[1], node, helper, ok ).Normalized();
+ else if ( dir * fromEdgeDir < 0 )
+ dir *= -1;
+ }
+ catch ( Standard_Failure )
+ {
+ ok = false;
+ }
if ( ok )
{
//dir /= edges.size();
}
}
+ // add FACEs of other SOLIDs to _ignoreFaceIds
+ for ( size_t i = 0; i < _sdVec.size(); ++i )
+ {
+ shapes.Clear();
+ TopExp::MapShapes(_sdVec[i]._solid, TopAbs_FACE, shapes);
+
+ for ( exp.Init( _mesh->GetShapeToMesh(), TopAbs_FACE ); exp.More(); exp.Next() )
+ {
+ if ( !shapes.Contains( exp.Current() ))
+ _sdVec[i]._ignoreFaceIds.insert( getMeshDS()->ShapeToIndex( exp.Current() ));
+ }
+ }
+
return true;
}
if ( data._stepSize < 1. )
data._epsilon *= data._stepSize;
- // Put _LayerEdge's into the vector data._edges
+ // fill data._simplexTestEdges
+ findSimplexTestEdges( data, edgesByGeom );
+ // Put _LayerEdge's into the vector data._edges
if ( !sortEdges( data, edgesByGeom ))
return false;
- // Set target nodes into _Simplex and _2NearEdges
+ // Set target nodes into _Simplex and _2NearEdges of _LayerEdge's
TNode2Edge::iterator n2e;
for ( size_t i = 0; i < data._edges.size(); ++i )
{
n = (*n2e).second->_nodes.back();
data._edges[i]->_2neibors->_edges[j] = n2e->second;
}
- else
- for ( size_t j = 0; j < data._edges[i]->_simplices.size(); ++j )
- {
- _Simplex& s = data._edges[i]->_simplices[j];
- s._nNext = data._n2eMap[ s._nNext ]->_nodes.back();
- s._nPrev = data._n2eMap[ s._nPrev ]->_nodes.back();
- }
+ //else
+ for ( size_t j = 0; j < data._edges[i]->_simplices.size(); ++j )
+ {
+ _Simplex& s = data._edges[i]->_simplices[j];
+ s._nNext = data._n2eMap[ s._nNext ]->_nodes.back();
+ s._nPrev = data._n2eMap[ s._nPrev ]->_nodes.back();
+ }
}
dumpFunctionEnd();
*/
//================================================================================
-void _ViscousBuilder::limitStepSize( _SolidData& data, const double minSize)
+void _ViscousBuilder::limitStepSize( _SolidData& data, const double minSize )
{
if ( minSize < data._stepSize )
{
}
}
+//================================================================================
+/*!
+ * Fill data._simplexTestEdges. These _LayerEdge's are used to stop inflation
+ * in the case where there are no _LayerEdge's on a curved convex FACE,
+ * as e.g. on a fillet surface with no internal nodes - issue 22580,
+ * so that collision of viscous internal faces is not detected by check of
+ * intersection of _LayerEdge's with the viscous internal faces.
+ */
+//================================================================================
+
+void _ViscousBuilder::findSimplexTestEdges( _SolidData& data,
+ vector< vector<_LayerEdge*> >& edgesByGeom)
+{
+ data._simplexTestEdges.clear();
+
+ SMESH_MesherHelper helper( *_mesh );
+
+ vector< vector<_LayerEdge*> * > ledgesOnEdges;
+ set< const SMDS_MeshNode* > usedNodes;
+
+ const double minCurvature = 1. / data._hyp->GetTotalThickness();
+
+ for ( size_t iS = 0; iS < edgesByGeom.size(); ++iS )
+ {
+ // look for a FACE with layers and w/o _LayerEdge's
+ const vector<_LayerEdge*>& eS = edgesByGeom[iS];
+ if ( !eS.empty() ) continue;
+ const TopoDS_Shape& S = getMeshDS()->IndexToShape( iS );
+ if ( S.IsNull() || S.ShapeType() != TopAbs_FACE ) continue;
+ if ( data._ignoreFaceIds.count( iS )) continue;
+
+ const TopoDS_Face& F = TopoDS::Face( S );
+
+ // look for _LayerEdge's on EDGEs with null _sWOL
+ ledgesOnEdges.clear();
+ TopExp_Explorer eExp( F, TopAbs_EDGE );
+ for ( ; eExp.More(); eExp.Next() )
+ {
+ TGeomID iE = getMeshDS()->ShapeToIndex( eExp.Current() );
+ vector<_LayerEdge*>& eE = edgesByGeom[iE];
+ if ( !eE.empty() && eE[0]->_sWOL.IsNull() )
+ ledgesOnEdges.push_back( & eE );
+ }
+ if ( ledgesOnEdges.empty() ) continue;
+
+ // check FACE convexity
+ const _LayerEdge* le = ledgesOnEdges[0]->back();
+ gp_XY uv = helper.GetNodeUV( F, le->_nodes[0] );
+ BRepAdaptor_Surface surf( F );
+ BRepLProp_SLProps surfProp( surf, uv.X(), uv.Y(), 2, 1e-6 );
+ if ( !surfProp.IsCurvatureDefined() )
+ continue;
+ double surfCurvature = Max( Abs( surfProp.MaxCurvature() ),
+ Abs( surfProp.MinCurvature() ));
+ if ( surfCurvature < minCurvature )
+ continue;
+ gp_Dir minDir, maxDir;
+ surfProp.CurvatureDirections( maxDir, minDir );
+ if ( F.Orientation() == TopAbs_REVERSED ) {
+ maxDir.Reverse(); minDir.Reverse();
+ }
+ const gp_XYZ& inDir = le->_normal;
+ if ( inDir * maxDir.XYZ() < 0 &&
+ inDir * minDir.XYZ() < 0 )
+ continue;
+
+ limitStepSize( data, 0.9 / surfCurvature );
+
+ // add _simplices to the _LayerEdge's
+ for ( size_t iE = 0; iE < ledgesOnEdges.size(); ++iE )
+ {
+ const vector<_LayerEdge*>& ledges = *ledgesOnEdges[iE];
+ for ( size_t iLE = 0; iLE < ledges.size(); ++iLE )
+ {
+ _LayerEdge* ledge = ledges[iLE];
+ const SMDS_MeshNode* srcNode = ledge->_nodes[0];
+ if ( !usedNodes.insert( srcNode ).second ) continue;
+
+ getSimplices( srcNode, ledge->_simplices, data._ignoreFaceIds, &data );
+ for ( size_t i = 0; i < ledge->_simplices.size(); ++i )
+ {
+ usedNodes.insert( ledge->_simplices[i]._nPrev );
+ usedNodes.insert( ledge->_simplices[i]._nNext );
+ }
+ data._simplexTestEdges.push_back( ledge );
+ }
+ }
+ }
+}
+
//================================================================================
/*!
* \brief Separate shapes (and _LayerEdge's on them) to smooth from the rest ones
{
vector<_LayerEdge*>& eS = edgesByGeom[iS];
if ( eS.empty() ) continue;
- TopoDS_Shape S = getMeshDS()->IndexToShape( iS );
+ const TopoDS_Shape& S = getMeshDS()->IndexToShape( iS );
bool needSmooth = false;
switch ( S.ShapeType() )
{
set<TGeomID>::iterator id = faceIds.begin();
TopoDS_Face F;
+ std::pair< TGeomID, gp_XYZ > id2Norm[20];
for ( ; id != faceIds.end(); ++id )
{
const TopoDS_Shape& s = getMeshDS()->IndexToShape( *id );
if ( s.IsNull() || s.ShapeType() != TopAbs_FACE || !subIds.count( *id ))
continue;
- totalNbFaces++;
F = TopoDS::Face( s );
gp_XY uv = helper.GetNodeUV( F, node, 0, &normOK );
}
if ( helper.GetSubShapeOri( data._solid, F ) != TopAbs_REVERSED )
geomNorm.Reverse();
+ id2Norm[ totalNbFaces ].first = *id;
+ id2Norm[ totalNbFaces ].second = geomNorm.XYZ();
+ totalNbFaces++;
edge._normal += geomNorm.XYZ();
}
if ( totalNbFaces == 0 )
return error(SMESH_Comment("Can't get normal to node ") << node->GetID(), data._index);
- edge._normal /= totalNbFaces;
+ if ( totalNbFaces < 3 )
+ {
+ //edge._normal /= totalNbFaces;
+ }
+ else
+ {
+ edge._normal = getWeigthedNormal( node, id2Norm, totalNbFaces );
+ }
switch ( posType )
{
return true;
}
+//================================================================================
+/*!
+ * \brief Return normal at a node weighted with angles taken by FACEs
+ * \param [in] n - the node
+ * \param [in] fId2Normal - FACE ids and normals
+ * \param [in] nbFaces - nb of FACEs meeting at the node
+ * \return gp_XYZ - computed normal
+ */
+//================================================================================
+
+gp_XYZ _ViscousBuilder::getWeigthedNormal( const SMDS_MeshNode* n,
+ std::pair< TGeomID, gp_XYZ > fId2Normal[],
+ const int nbFaces )
+{
+ gp_XYZ resNorm(0,0,0);
+ TopoDS_Shape V = SMESH_MesherHelper::GetSubShapeByNode( n, getMeshDS() );
+ if ( V.ShapeType() != TopAbs_VERTEX )
+ {
+ for ( int i = 0; i < nbFaces; ++i )
+ resNorm += fId2Normal[i].second / nbFaces ;
+ return resNorm;
+ }
+
+ double angles[30];
+ for ( int i = 0; i < nbFaces; ++i )
+ {
+ const TopoDS_Face& F = TopoDS::Face( getMeshDS()->IndexToShape( fId2Normal[i].first ));
+
+ // look for two EDGEs shared by F and other FACEs within fId2Normal
+ TopoDS_Edge ee[2];
+ int nbE = 0;
+ PShapeIteratorPtr eIt = SMESH_MesherHelper::GetAncestors( V, *_mesh, TopAbs_EDGE );
+ while ( const TopoDS_Shape* E = eIt->next() )
+ {
+ if ( !SMESH_MesherHelper::IsSubShape( *E, F ))
+ continue;
+ bool isSharedEdge = false;
+ for ( int j = 0; j < nbFaces && !isSharedEdge; ++j )
+ {
+ if ( i == j ) continue;
+ const TopoDS_Shape& otherF = getMeshDS()->IndexToShape( fId2Normal[j].first );
+ isSharedEdge = SMESH_MesherHelper::IsSubShape( *E, otherF );
+ }
+ if ( !isSharedEdge )
+ continue;
+ ee[ nbE ] = TopoDS::Edge( *E );
+ ee[ nbE ].Orientation( SMESH_MesherHelper::GetSubShapeOri( F, *E ));
+ if ( ++nbE == 2 )
+ break;
+ }
+
+ // get an angle between the two EDGEs
+ angles[i] = 0;
+ if ( nbE < 1 ) continue;
+ if ( nbE == 1 )
+ {
+ ee[ 1 ] == ee[ 0 ];
+ }
+ else
+ {
+ TopoDS_Vertex v10 = SMESH_MesherHelper::IthVertex( 1, ee[ 0 ]);
+ TopoDS_Vertex v01 = SMESH_MesherHelper::IthVertex( 0, ee[ 1 ]);
+ if ( !v10.IsSame( v01 ))
+ std::swap( ee[0], ee[1] );
+ }
+ angles[i] = SMESH_MesherHelper::GetAngle( ee[0], ee[1], F );
+ }
+
+ // compute a weighted normal
+ double sumAngle = 0;
+ for ( int i = 0; i < nbFaces; ++i )
+ {
+ angles[i] = ( angles[i] > 2*M_PI ) ? 0 : M_PI - angles[i];
+ sumAngle += angles[i];
+ }
+ for ( int i = 0; i < nbFaces; ++i )
+ resNorm += angles[i] / sumAngle * fId2Normal[i].second;
+
+ return resNorm;
+}
+
//================================================================================
/*!
* \brief Find 2 neigbor nodes of a node on EDGE
void _LayerEdge::SetCosin( double cosin )
{
_cosin = cosin;
- _lenFactor = ( _cosin > 0.1 ) ? 1./sqrt(1-_cosin*_cosin) : 1.0;
+ _lenFactor = ( Abs( _cosin ) > 0.1 ) ? 1./sqrt(1-_cosin*_cosin) : 1.0;
}
//================================================================================
}
} // loop on shapes to smooth
+ // Check orientation of simplices of _simplexTestEdges
+ for ( size_t i = 0; i < data._simplexTestEdges.size(); ++i )
+ {
+ const _LayerEdge* edge = data._simplexTestEdges[i];
+ SMESH_TNodeXYZ tgtXYZ( edge->_nodes.back() );
+ for ( size_t j = 0; j < edge->_simplices.size(); ++j )
+ if ( !edge->_simplices[j].IsForward( edge->_nodes[0], &tgtXYZ ))
+ {
+#ifdef __myDEBUG
+ cout << "Bad simplex of _simplexTestEdges ("
+ << " "<< edge->_nodes[0]->GetID()<< " "<< tgtXYZ._node->GetID()
+ << " "<< edge->_simplices[j]._nPrev->GetID()
+ << " "<< edge->_simplices[j]._nNext->GetID() << " )" << endl;
+#endif
+ return false;
+ }
+ }
+
// Check if the last segments of _LayerEdge intersects 2D elements;
// checked elements are either temporary faces or faces on surfaces w/o the layers
if ( FF1[0].IsNull() || FF2[0].IsNull() )
continue;
-// // get a new normal for edge1
+ // get a new normal for edge1
bool ok;
gp_Vec dir1 = edge1->_normal, dir2 = edge2->_normal;
if ( edge1->_cosin < 0 )
dir1 = getFaceDir( FF1[0], E1, edge1->_nodes[0], helper, ok ).Normalized();
if ( edge2->_cosin < 0 )
dir2 = getFaceDir( FF2[0], E2, edge2->_nodes[0], helper, ok ).Normalized();
- // gp_Vec dir1 = getFaceDir( FF1[0], E1, edge1->_nodes[0], helper, ok );
-// gp_Vec dir2 = getFaceDir( FF2[0], E2, edge2->_nodes[0], helper, ok2 );
-// double wgt1 = ( edge1->_cosin + 1 ) / ( edge1->_cosin + edge2->_cosin + 2 );
-// double wgt2 = ( edge2->_cosin + 1 ) / ( edge1->_cosin + edge2->_cosin + 2 );
-// gp_Vec newNorm = wgt1 * dir1 + wgt2 * dir2;
-// newNorm.Normalize();
+ // gp_Vec dir1 = getFaceDir( FF1[0], E1, edge1->_nodes[0], helper, ok );
+ // gp_Vec dir2 = getFaceDir( FF2[0], E2, edge2->_nodes[0], helper, ok2 );
+ // double wgt1 = ( edge1->_cosin + 1 ) / ( edge1->_cosin + edge2->_cosin + 2 );
+ // double wgt2 = ( edge2->_cosin + 1 ) / ( edge1->_cosin + edge2->_cosin + 2 );
+ // gp_Vec newNorm = wgt1 * dir1 + wgt2 * dir2;
+ // newNorm.Normalize();
double wgt1 = ( edge1->_cosin + 1 ) / ( edge1->_cosin + edge2->_cosin + 2 );
double wgt2 = ( edge2->_cosin + 1 ) / ( edge1->_cosin + edge2->_cosin + 2 );
n1 = edge1->_2neibors->_edges[0]->_nodes[0];
n2 = edge1->_2neibors->_edges[1]->_nodes[0];
//if ( !findNeiborsOnEdge( edge1, n1, n2, data ))
- //continue;
+ // continue;
edge1->SetDataByNeighbors( n1, n2, helper );
gp_Vec dirInFace;
if ( edge1->_cosin < 0 )
