enum UIndex { U_TGT = 1, U_SRC, LEN_TGT };
const double theMinSmoothCosin = 0.1;
+ const double theSmoothThickToElemSizeRatio = 0.3;
+
+ bool needSmoothing( double cosin, double tgtThick, double elemSize )
+ {
+ return cosin * tgtThick > theSmoothThickToElemSizeRatio * elemSize;
+ }
/*!
* \brief SMESH_ProxyMesh computed by _ViscousBuilder for a SOLID.
set<TGeomID> _reversedFaceIds;
set<TGeomID> _ignoreFaceIds; // WOL FACEs and FACEs of other SOLIDS
- double _stepSize, _stepSizeCoeff;
+ double _stepSize, _stepSizeCoeff, _geomSize;
const SMDS_MeshNode* _stepSizeNodes[2];
TNode2Edge _n2eMap; // nodes and _LayerEdge's based on them
const bool toSort = false);
void findSimplexTestEdges( _SolidData& data,
vector< vector<_LayerEdge*> >& edgesByGeom);
+ void computeGeomSize( _SolidData& data );
bool sortEdges( _SolidData& data,
vector< vector<_LayerEdge*> >& edgesByGeom);
void limitStepSizeByCurvature( _SolidData& data );
return _surface->Value( uv.X(), uv.Y() ).XYZ();
}
};
+
} // namespace VISCOUS_3D
}
return false;
}
+ //================================================================================
+ /*!
+ * \brief Computes mimimal distance of face in-FACE nodes from an EDGE
+ * \param [in] face - the mesh face to treat
+ * \param [in] nodeOnEdge - a node on the EDGE
+ * \param [out] faceSize - the computed distance
+ * \return bool - true if faceSize computed
+ */
+ //================================================================================
+
+ bool getDistFromEdge( const SMDS_MeshElement* face,
+ const SMDS_MeshNode* nodeOnEdge,
+ double & faceSize )
+ {
+ faceSize = Precision::Infinite();
+ bool done = false;
+
+ int nbN = face->NbCornerNodes();
+ int iOnE = face->GetNodeIndex( nodeOnEdge );
+ int iNext[2] = { SMESH_MesherHelper::WrapIndex( iOnE+1, nbN ),
+ SMESH_MesherHelper::WrapIndex( iOnE-1, nbN ) };
+ const SMDS_MeshNode* nNext[2] = { face->GetNode( iNext[0] ),
+ face->GetNode( iNext[1] ) };
+ gp_XYZ segVec, segEnd = SMESH_TNodeXYZ( nodeOnEdge ); // segment on EDGE
+ double segLen = -1.;
+ // look for two neighbor not in-FACE nodes of face
+ for ( int i = 0; i < 2; ++i )
+ {
+ if ( nNext[i]->GetPosition()->GetDim() != 2 &&
+ nNext[i]->GetID() < nodeOnEdge->GetID() )
+ {
+ // look for an in-FACE node
+ for ( int iN = 0; iN < nbN; ++iN )
+ {
+ if ( iN == iOnE || iN == iNext[i] )
+ continue;
+ SMESH_TNodeXYZ pInFace = face->GetNode( iN );
+ gp_XYZ v = pInFace - segEnd;
+ if ( segLen < 0 )
+ {
+ segVec = SMESH_TNodeXYZ( nNext[i] ) - segEnd;
+ segLen = segVec.Modulus();
+ }
+ double distToSeg = v.Crossed( segVec ).Modulus() / segLen;
+ faceSize = Min( faceSize, distToSeg );
+ done = true;
+ }
+ segLen = -1;
+ }
+ }
+ return done;
+ }
+
//--------------------------------------------------------------------------------
// DEBUG. Dump intermediate node positions into a python script
// HOWTO use: run python commands written in a console to see
bool _ViscousBuilder::sortEdges( _SolidData& data,
vector< vector<_LayerEdge*> >& edgesByGeom)
{
+ // define allowed thickness
+ computeGeomSize( data ); // compute data._geomSize
+ const double tgtThick = Min( 0.5 * data._geomSize, data._hyp->GetTotalThickness() );
+
// Find shapes needing smoothing; such a shape has _LayerEdge._normal on it's
- // boundry inclined at a sharp angle to the shape
+ // boundry inclined to the shape at a sharp angle
list< TGeomID > shapesToSmooth;
TGeomID iV = getMeshDS()->ShapeToIndex( vIt.Value() );
vector<_LayerEdge*>& eV = edgesByGeom[ iV ];
if ( eV.empty() ) continue;
- // double cosin = eV[0]->_cosin;
- // bool badCosin =
- // ( !eV[0]->_sWOL.IsNull() && ( eV[0]->_sWOL.ShapeType() == TopAbs_EDGE || !isShrinkEdge));
- // if ( badCosin )
- // {
- // gp_Vec dir1, dir2;
- // if ( eV[0]->_sWOL.ShapeType() == TopAbs_EDGE )
- // dir1 = getEdgeDir( TopoDS::Edge( eV[0]->_sWOL ), TopoDS::Vertex( vIt.Value() ));
- // else
- // dir1 = getFaceDir( TopoDS::Face( eV[0]->_sWOL ), TopoDS::Vertex( vIt.Value() ),
- // eV[0]->_nodes[0], helper, ok);
- // dir2 = getEdgeDir( TopoDS::Edge( S ), TopoDS::Vertex( vIt.Value() ));
- // double angle = dir1.Angle( dir2 );
- // cosin = cos( angle );
- // }
gp_Vec eDir = getEdgeDir( TopoDS::Edge( S ), TopoDS::Vertex( vIt.Value() ));
double angle = eDir.Angle( eV[0]->_normal );
double cosin = Cos( angle );
- needSmooth = ( cosin > theMinSmoothCosin );
+ if ( cosin > theMinSmoothCosin )
+ {
+ // compare tgtThick with the length of an end segment
+ SMDS_ElemIteratorPtr eIt = eV[0]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Edge);
+ while ( eIt->more() )
+ {
+ const SMDS_MeshElement* endSeg = eIt->next();
+ if ( endSeg->getshapeId() == iS )
+ {
+ double segLen =
+ SMESH_TNodeXYZ( endSeg->GetNode(0) ).Distance( endSeg->GetNode(1 ));
+ needSmooth = needSmoothing( cosin, tgtThick, segLen );
+ break;
+ }
+ }
+ }
}
break;
}
TGeomID iE = getMeshDS()->ShapeToIndex( eExp.Current() );
vector<_LayerEdge*>& eE = edgesByGeom[ iE ];
if ( eE.empty() ) continue;
- if ( eE[0]->_sWOL.IsNull() )
- {
- for ( size_t i = 0; i < eE.size() && !needSmooth; ++i )
- needSmooth = ( eE[i]->_cosin > theMinSmoothCosin );
- }
- else
+ // TopLoc_Location loc;
+ // Handle(Geom_Surface) surface = BRep_Tool::Surface( TopoDS::Face( S ), loc );
+ // bool isPlane = GeomLib_IsPlanarSurface( surface ).IsPlanar();
+ //if ( eE[0]->_sWOL.IsNull() )
{
- const TopoDS_Face& F1 = TopoDS::Face( S );
- const TopoDS_Face& F2 = TopoDS::Face( eE[0]->_sWOL );
- const TopoDS_Edge& E = TopoDS::Edge( eExp.Current() );
+ double faceSize;
for ( size_t i = 0; i < eE.size() && !needSmooth; ++i )
- {
- gp_Vec dir1 = getFaceDir( F1, E, eE[i]->_nodes[0], helper, ok );
- gp_Vec dir2 = getFaceDir( F2, E, eE[i]->_nodes[0], helper, ok );
- double angle = dir1.Angle( dir2 );
- double cosin = cos( angle );
- needSmooth = ( cosin > theMinSmoothCosin );
- }
+ if ( eE[i]->_cosin > theMinSmoothCosin )
+ {
+ SMDS_ElemIteratorPtr fIt = eE[i]->_nodes[0]->GetInverseElementIterator(SMDSAbs_Face);
+ while ( fIt->more() && !needSmooth )
+ {
+ const SMDS_MeshElement* face = fIt->next();
+ if ( getDistFromEdge( face, eE[i]->_nodes[0], faceSize ))
+ needSmooth = needSmoothing( eE[i]->_cosin, tgtThick, faceSize );
+ }
+ }
}
+ // else
+ // {
+ // const TopoDS_Face& F1 = TopoDS::Face( S );
+ // const TopoDS_Face& F2 = TopoDS::Face( eE[0]->_sWOL );
+ // const TopoDS_Edge& E = TopoDS::Edge( eExp.Current() );
+ // for ( size_t i = 0; i < eE.size() && !needSmooth; ++i )
+ // {
+ // gp_Vec dir1 = getFaceDir( F1, E, eE[i]->_nodes[0], helper, ok );
+ // gp_Vec dir2 = getFaceDir( F2, E, eE[i]->_nodes[0], helper, ok );
+ // double angle = dir1.Angle( );
+ // double cosin = cos( angle );
+ // needSmooth = ( cosin > theMinSmoothCosin );
+ // }
+ // }
}
break;
}
continue;
default:;
}
+
if ( needSmooth )
{
if ( S.ShapeType() == TopAbs_EDGE ) shapesToSmooth.push_front( iS );
#endif
}
+//================================================================================
+/*!
+ * \brief Find maximal _LayerEdge length (layer thickness) limited by geometry
+ */
+//================================================================================
+
+void _ViscousBuilder::computeGeomSize( _SolidData& data )
+{
+ data._geomSize = Precision::Infinite();
+ double intersecDist;
+ auto_ptr<SMESH_ElementSearcher> searcher
+ ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
+ data._proxyMesh->GetFaces( data._solid )) );
+
+ TNode2Edge::iterator n2e = data._n2eMap.begin(), n2eEnd = data._n2eMap.end();
+ for ( ; n2e != n2eEnd; ++n2e )
+ {
+ _LayerEdge* edge = n2e->second;
+ if ( edge->IsOnEdge() ) continue;
+ edge->FindIntersection( *searcher, intersecDist, data._epsilon );
+ if ( data._geomSize > intersecDist && intersecDist > 0 )
+ data._geomSize = intersecDist;
+ }
+}
+
//================================================================================
/*!
* \brief Increase length of _LayerEdge's to reach the required thickness of layers
// Limit inflation step size by geometry size found by itersecting
// normals of _LayerEdge's with mesh faces
- double geomSize = Precision::Infinite(), intersecDist;
- auto_ptr<SMESH_ElementSearcher> searcher
- ( SMESH_MeshAlgos::GetElementSearcher( *getMeshDS(),
- data._proxyMesh->GetFaces( data._solid )) );
- for ( size_t i = 0; i < data._edges.size(); ++i )
- {
- if ( data._edges[i]->IsOnEdge() ) continue;
- data._edges[i]->FindIntersection( *searcher, intersecDist, data._epsilon );
- if ( geomSize > intersecDist && intersecDist > 0 )
- geomSize = intersecDist;
- }
- if ( data._stepSize > 0.3 * geomSize )
- limitStepSize( data, 0.3 * geomSize );
+ if ( data._stepSize > 0.3 * data._geomSize )
+ limitStepSize( data, 0.3 * data._geomSize );
const double tgtThick = data._hyp->GetTotalThickness();
if ( data._stepSize > tgtThick )
if ( data._stepSize < 1. )
data._epsilon = data._stepSize * 1e-7;
- debugMsg( "-- geomSize = " << geomSize << ", stepSize = " << data._stepSize );
+ debugMsg( "-- geomSize = " << data._geomSize << ", stepSize = " << data._stepSize );
double avgThick = 0, curThick = 0, distToIntersection = Precision::Infinite();
int nbSteps = 0, nbRepeats = 0;
{
SMESH_MesherHelper helper( *_mesh );
+ vector< const SMDS_MeshNode* > faceNodes;
+
for ( size_t i = 0; i < _sdVec.size(); ++i )
{
_SolidData& data = _sdVec[i];
if ( nbSharedPyram > 1 )
continue; // not free border of the pyramid
- if ( getMeshDS()->FindFace( ledges[0]->_nodes[0], ledges[0]->_nodes[1],
- ledges[1]->_nodes[0], ledges[1]->_nodes[1]))
+ faceNodes.clear();
+ faceNodes.push_back( ledges[0]->_nodes[0] );
+ faceNodes.push_back( ledges[1]->_nodes[0] );
+ if ( ledges[0]->_nodes.size() > 1 ) faceNodes.push_back( ledges[0]->_nodes[1] );
+ if ( ledges[1]->_nodes.size() > 1 ) faceNodes.push_back( ledges[1]->_nodes[1] );
+
+ if ( getMeshDS()->FindElement( faceNodes, SMDSAbs_Face, /*noMedium=*/true))
continue; // faces already created
}
for ( ++u2n; u2n != u2nodes.end(); ++u2n )
