#include <utilities.h>
+#include <BRepAdaptor_Surface.hxx>
#include <BRepBuilderAPI_Copy.hxx>
+#include <BRepLProp_SLProps.hxx>
+#include <BRepMesh_IncrementalMesh.hxx>
+#include <BRep_Builder.hxx>
#include <BRep_Tool.hxx>
#include <Bnd_B3d.hxx>
+#include <GeomLib_IsPlanarSurface.hxx>
#include <NCollection_Map.hxx>
+#include <Poly_Triangulation.hxx>
#include <Standard_ErrorHandler.hxx>
#include <Standard_ProgramError.hxx>
#include <TColStd_MapOfInteger.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
+#include <TopLoc_Location.hxx>
#include <TopTools_DataMapIteratorOfDataMapOfShapeInteger.hxx>
#include <TopTools_DataMapIteratorOfDataMapOfShapeShape.hxx>
#include <TopTools_DataMapOfShapeInteger.hxx>
#include <TopTools_DataMapOfShapeShape.hxx>
#include <TopTools_MapOfShape.hxx>
#include <TopoDS.hxx>
+#include <TopoDS_Compound.hxx>
// Netgen include files
#ifndef OCCGEOMETRY
_optimize(true),
_fineness(NETGENPlugin_Hypothesis::GetDefaultFineness()),
_isViscousLayers2D(false),
+ _chordalError(-1), // means disabled
_ngMesh(NULL),
_occgeom(NULL),
_curShapeIndex(-1),
_fineness = hyp->GetFineness();
mparams.uselocalh = hyp->GetSurfaceCurvature();
netgen::merge_solids = hyp->GetFuseEdges();
+ _chordalError = hyp->GetChordalErrorEnabled() ? hyp->GetChordalError() : -1.;
_simpleHyp = NULL;
// mesh size file
mparams.meshsizefilename= hyp->GetMeshSizeFile().empty() ? 0 : hyp->GetMeshSizeFile().c_str();
- SMESH_Gen_i* smeshGen_i = SMESH_Gen_i::GetSMESHGen();
- CORBA::Object_var anObject = smeshGen_i->GetNS()->Resolve("/myStudyManager");
- SALOMEDS::StudyManager_var aStudyMgr = SALOMEDS::StudyManager::_narrow(anObject);
- SALOMEDS::Study_var myStudy = aStudyMgr->GetStudyByID(hyp->GetStudyId());
- if ( !myStudy->_is_nil() )
+ const NETGENPlugin_Hypothesis::TLocalSize& localSizes = hyp->GetLocalSizesAndEntries();
+ if ( !localSizes.empty() )
{
- const NETGENPlugin_Hypothesis::TLocalSize localSizes = hyp->GetLocalSizesAndEntries();
+ SMESH_Gen_i* smeshGen_i = SMESH_Gen_i::GetSMESHGen();
NETGENPlugin_Hypothesis::TLocalSize::const_iterator it = localSizes.begin();
for ( ; it != localSizes.end() ; it++)
{
double val = (*it).second;
// --
GEOM::GEOM_Object_var aGeomObj;
- SALOMEDS::SObject_var aSObj = myStudy->FindObjectID( entry.c_str() );
+ SALOMEDS::SObject_var aSObj = SMESH_Gen_i::getStudyServant()->FindObjectID( entry.c_str() );
if ( !aSObj->_is_nil() ) {
CORBA::Object_var obj = aSObj->GetObject();
aGeomObj = GEOM::GEOM_Object::_narrow(obj);
aSObj->UnRegister();
}
TopoDS_Shape S = smeshGen_i->GeomObjectToShape( aGeomObj.in() );
- ::SetLocalSize(S, val);
+ ::SetLocalSize(S, val);
}
}
}
void setLocalSize(const TopoDS_Edge& edge,
double size,
- netgen::Mesh& mesh)
+ netgen::Mesh& mesh,
+ const bool overrideMinH = true)
{
if ( size <= std::numeric_limits<double>::min() )
return;
TopoDS_Iterator vIt( edge );
if ( !vIt.More() ) return;
gp_Pnt p = BRep_Tool::Pnt( TopoDS::Vertex( vIt.Value() ));
- NETGENPlugin_Mesher::RestrictLocalSize( mesh, p.XYZ(), size );
+ NETGENPlugin_Mesher::RestrictLocalSize( mesh, p.XYZ(), size, overrideMinH );
}
else
{
{
Standard_Real u = u1 + delta*i;
gp_Pnt p = curve->Value(u);
- NETGENPlugin_Mesher::RestrictLocalSize( mesh, p.XYZ(), size );
+ NETGENPlugin_Mesher::RestrictLocalSize( mesh, p.XYZ(), size, overrideMinH );
netgen::Point3d pi(p.X(), p.Y(), p.Z());
double resultSize = mesh.GetH(pi);
if ( resultSize - size > 0.1*size )
// netgen does restriction iff oldH/newH > 1.2 (localh.cpp:136)
- NETGENPlugin_Mesher::RestrictLocalSize( mesh, p.XYZ(), resultSize/1.201 );
+ NETGENPlugin_Mesher::RestrictLocalSize( mesh, p.XYZ(), resultSize/1.201, overrideMinH );
}
}
}
+
+ //================================================================================
+ /*!
+ * \brief Return triangle size for a given chordalError and radius of curvature
+ */
+ //================================================================================
+
+ double elemSizeForChordalError( double chordalError, double radius )
+ {
+ if ( 2 * radius < chordalError )
+ return 1.5 * radius;
+ return Sqrt( 3 ) * Sqrt( chordalError * ( 2 * radius - chordalError ));
+ }
+
} // namespace
//================================================================================
//================================================================================
void NETGENPlugin_Mesher::SetLocalSize( netgen::OCCGeometry& occgeo,
- netgen::Mesh& ngMesh )
+ netgen::Mesh& ngMesh)
{
- for(std::map<int,double>::const_iterator it=EdgeId2LocalSize.begin(); it!=EdgeId2LocalSize.end(); it++)
+ // edges
+ std::map<int,double>::const_iterator it;
+ for( it=EdgeId2LocalSize.begin(); it!=EdgeId2LocalSize.end(); it++)
{
int key = (*it).first;
double hi = (*it).second;
const TopoDS_Shape& shape = ShapesWithLocalSize.FindKey(key);
setLocalSize( TopoDS::Edge(shape), hi, ngMesh );
}
- for(std::map<int,double>::const_iterator it=VertexId2LocalSize.begin(); it!=VertexId2LocalSize.end(); it++)
+ // vertices
+ for(it=VertexId2LocalSize.begin(); it!=VertexId2LocalSize.end(); it++)
{
int key = (*it).first;
double hi = (*it).second;
gp_Pnt p = BRep_Tool::Pnt( TopoDS::Vertex(shape) );
NETGENPlugin_Mesher::RestrictLocalSize( ngMesh, p.XYZ(), hi );
}
- for(map<int,double>::const_iterator it=FaceId2LocalSize.begin(); it!=FaceId2LocalSize.end(); it++)
+ // faces
+ for(it=FaceId2LocalSize.begin(); it!=FaceId2LocalSize.end(); it++)
{
int key = (*it).first;
double val = (*it).second;
ShapesWithControlPoints.insert( key );
}
}
- for(map<int,double>::const_iterator it=SolidId2LocalSize.begin(); it!=SolidId2LocalSize.end(); it++)
+ //solids
+ for(it=SolidId2LocalSize.begin(); it!=SolidId2LocalSize.end(); it++)
{
int key = (*it).first;
double val = (*it).second;
for ( size_t i = 0; i < ControlPoints.size(); ++i )
NETGENPlugin_Mesher::RestrictLocalSize( ngMesh, ControlPoints[i].XYZ(), ControlPoints[i].Size() );
}
+ return;
+}
+
+//================================================================================
+/*!
+ * \brief Restrict local size to achieve a required _chordalError
+ */
+//================================================================================
+
+void NETGENPlugin_Mesher::SetLocalSizeForChordalError( netgen::OCCGeometry& occgeo,
+ netgen::Mesh& ngMesh)
+{
+ if ( _chordalError <= 0. )
+ return;
+
+ TopLoc_Location loc;
+ BRepLProp_SLProps surfProp( 2, 1e-6 );
+ const double sizeCoef = 0.95;
+
+ // find non-planar FACEs with non-constant curvature
+ std::vector<int> fInd;
+ for ( int i = 1; i <= occgeo.fmap.Extent(); ++i )
+ {
+ const TopoDS_Face& face = TopoDS::Face( occgeo.fmap( i ));
+ BRepAdaptor_Surface surfAd( face, false );
+ switch ( surfAd.GetType() )
+ {
+ case GeomAbs_Plane:
+ continue;
+ case GeomAbs_Cylinder:
+ case GeomAbs_Sphere:
+ case GeomAbs_Torus: // constant curvature
+ {
+ surfProp.SetSurface( surfAd );
+ surfProp.SetParameters( 0, 0 );
+ double maxCurv = Max( Abs( surfProp.MaxCurvature()), Abs( surfProp.MinCurvature() ));
+ double size = elemSizeForChordalError( _chordalError, 1 / maxCurv );
+ occgeo.SetFaceMaxH( i, size * sizeCoef );
+ // limit size one edges
+ TopTools_MapOfShape edgeMap;
+ for ( TopExp_Explorer eExp( face, TopAbs_EDGE ); eExp.More(); eExp.Next() )
+ if ( edgeMap.Add( eExp.Current() ))
+ setLocalSize( TopoDS::Edge( eExp.Current() ), size, ngMesh, /*overrideMinH=*/false );
+ break;
+ }
+ default:
+ Handle(Geom_Surface) surf = BRep_Tool::Surface( face, loc );
+ if ( GeomLib_IsPlanarSurface( surf ).IsPlanar() )
+ continue;
+ fInd.push_back( i );
+ }
+ }
+ // set local size
+ if ( !fInd.empty() )
+ {
+ BRep_Builder b;
+ TopoDS_Compound allFacesComp;
+ b.MakeCompound( allFacesComp );
+ for ( size_t i = 0; i < fInd.size(); ++i )
+ b.Add( allFacesComp, occgeo.fmap( fInd[i] ));
+
+ // copy the shape to avoid spoiling its triangulation
+ TopoDS_Shape allFacesCompCopy = BRepBuilderAPI_Copy( allFacesComp );
+
+ // create triangulation with desired chordal error
+ BRepMesh_IncrementalMesh( allFacesCompCopy,
+ _chordalError,
+ /*isRelative = */Standard_False,
+ /*theAngDeflection = */ 0.5,
+ /*isInParallel = */Standard_True);
+
+ // loop on FACEs
+ for ( TopExp_Explorer fExp( allFacesCompCopy, TopAbs_FACE ); fExp.More(); fExp.Next() )
+ {
+ const TopoDS_Face& face = TopoDS::Face( fExp.Current() );
+ Handle(Poly_Triangulation) triangulation = BRep_Tool::Triangulation ( face, loc );
+ if ( triangulation.IsNull() ) continue;
+
+ BRepAdaptor_Surface surf( face, false );
+ surfProp.SetSurface( surf );
+
+ gp_XY uv[3];
+ gp_XYZ p[3];
+ double size[3];
+ for ( int i = 1; i <= triangulation->NbTriangles(); ++i )
+ {
+ Standard_Integer n1,n2,n3;
+ triangulation->Triangles()(i).Get( n1,n2,n3 );
+ p [0] = triangulation->Nodes()(n1).Transformed(loc).XYZ();
+ p [1] = triangulation->Nodes()(n2).Transformed(loc).XYZ();
+ p [2] = triangulation->Nodes()(n3).Transformed(loc).XYZ();
+ uv[0] = triangulation->UVNodes()(n1).XY();
+ uv[1] = triangulation->UVNodes()(n2).XY();
+ uv[2] = triangulation->UVNodes()(n3).XY();
+ surfProp.SetParameters( uv[0].X(), uv[0].Y() );
+ if ( !surfProp.IsCurvatureDefined() )
+ break;
+
+ for ( int n = 0; n < 3; ++n ) // get size at triangle nodes
+ {
+ surfProp.SetParameters( uv[n].X(), uv[n].Y() );
+ double maxCurv = Max( Abs( surfProp.MaxCurvature()), Abs( surfProp.MinCurvature() ));
+ size[n] = elemSizeForChordalError( _chordalError, 1 / maxCurv );
+ }
+ for ( int n1 = 0; n1 < 3; ++n1 ) // limit size along each triangle edge
+ {
+ int n2 = ( n1 + 1 ) % 3;
+ double minSize = size[n1], maxSize = size[n2];
+ if ( size[n1] > size[n2] )
+ minSize = size[n2], maxSize = size[n1];
+
+ if ( maxSize / minSize < 1.2 ) // netgen ignores size difference < 1.2
+ {
+ ngMesh.RestrictLocalHLine ( netgen::Point3d( p[n1].X(), p[n1].Y(), p[n1].Z() ),
+ netgen::Point3d( p[n2].X(), p[n2].Y(), p[n2].Z() ),
+ sizeCoef * minSize );
+ }
+ else
+ {
+ gp_XY uvVec( uv[n2] - uv[n1] );
+ double len = ( p[n1] - p[n2] ).Modulus();
+ int nb = int( len / minSize ) + 1;
+ for ( int j = 0; j <= nb; ++j )
+ {
+ double r = double( j ) / nb;
+ gp_XY uvj = uv[n1] + r * uvVec;
+
+ surfProp.SetParameters( uvj.X(), uvj.Y() );
+ double maxCurv = Max( Abs( surfProp.MaxCurvature()), Abs( surfProp.MinCurvature() ));
+ double h = elemSizeForChordalError( _chordalError, 1 / maxCurv );
+
+ const gp_Pnt& pj = surfProp.Value();
+ netgen::Point3d ngP( pj.X(), pj.Y(), pj.Z());
+ ngMesh.RestrictLocalH( ngP, h * sizeCoef );
+ }
+ }
+ }
+ }
+ }
+ }
}
//================================================================================
ofstream py(DUMP_TRIANGLES_SCRIPT);
py << "import SMESH"<< endl
<< "from salome.smesh import smeshBuilder"<<endl
- << "smesh = smeshBuilder.New(salome.myStudy)"<<endl
+ << "smesh = smeshBuilder.New()"<<endl
<< "m = smesh.Mesh(name='triangles')" << endl;
#endif
if ((int) nodeVec.size() < ngMesh.GetNP() )
netgen::Segment& prevSeg = ngMesh.LineSegment( i-1 );
if ( seg[0] == prevSeg[1] && seg[1] == prevSeg[0] )
{
- cout << "Segment: " << seg.edgenr << endl << "\tis REVRESE of the previous one" << endl;
+ cout << "Segment: " << seg.edgenr << endl << "\tis REVERSE of the previous one" << endl;
continue;
}
}
SMESHDS_Mesh* meshDS = sMesh.GetMeshDS();
// quadHelper is used for either
- // 1) making quadratic elements when a lower dimention mesh is loaded
- // to SMESH before convertion to quadratic by NETGEN
+ // 1) making quadratic elements when a lower dimension mesh is loaded
+ // to SMESH before conversion to quadratic by NETGEN
// 2) sewing of quadratic elements with quadratic elements of sub-meshes
if ( quadHelper && !quadHelper->GetIsQuadratic() && quadHelper->GetTLinkNodeMap().empty() )
quadHelper = 0;
{
// Local size on shapes
SetLocalSize( occgeo, *_ngMesh );
+ SetLocalSizeForChordalError( occgeo, *_ngMesh );
}
// Precompute internal edges (issue 0020676) in order to
sm->GetComputeError().reset( new SMESH_ComputeError( COMPERR_ALGO_FAILED ));
return false;
}
- if ( _simpleHyp )
- {
- // Pass 1D simple parameters to NETGEN
- // --------------------------------
- int nbSeg = _simpleHyp->GetNumberOfSegments();
- double segSize = _simpleHyp->GetLocalLength();
- for ( int iE = 1; iE <= occgeo.emap.Extent(); ++iE )
- {
- const TopoDS_Edge& e = TopoDS::Edge( occgeo.emap(iE));
- if ( nbSeg )
- segSize = SMESH_Algo::EdgeLength( e ) / ( nbSeg - 0.4 );
- setLocalSize( e, segSize, *ngMesh );
- }
- }
- else // if ( ! _simpleHyp )
- {
- // Local size on shapes
- SetLocalSize( occgeo, *ngMesh );
- }
+ // if ( _simpleHyp )
+ // {
+ // // Pass 1D simple parameters to NETGEN
+ // // --------------------------------
+ // int nbSeg = _simpleHyp->GetNumberOfSegments();
+ // double segSize = _simpleHyp->GetLocalLength();
+ // for ( int iE = 1; iE <= occgeo.emap.Extent(); ++iE )
+ // {
+ // const TopoDS_Edge& e = TopoDS::Edge( occgeo.emap(iE));
+ // if ( nbSeg )
+ // segSize = SMESH_Algo::EdgeLength( e ) / ( nbSeg - 0.4 );
+ // setLocalSize( e, segSize, *ngMesh );
+ // }
+ // }
+ // else // if ( ! _simpleHyp )
+ // {
+ // // Local size on shapes
+ // SetLocalSize( occgeo, *ngMesh );
+ // }
// calculate total nb of segments and length of edges
double fullLen = 0.0;
int fullNbSeg = 0;
outfile << "import salome, SMESH" << endl
<< "from salome.smesh import smeshBuilder" << endl
- << "smesh = smeshBuilder.New(salome.myStudy)" << endl
+ << "smesh = smeshBuilder.New()" << endl
<< "mesh = smesh.Mesh()" << endl << endl;
using namespace netgen;
}
string tmpDir = SALOMEDS_Tool::GetDirFromPath ( _outputFileName );
string aFileName = SALOMEDS_Tool::GetNameFromPath( _outputFileName ) + ".out";
- SALOMEDS::ListOfFileNames_var aFiles = new SALOMEDS::ListOfFileNames;
- aFiles->length(1);
- aFiles[0] = aFileName.c_str();
+ SALOMEDS_Tool::ListOfFiles aFiles;
+ aFiles.reserve(1);
+ aFiles.push_back(aFileName.c_str());
- SALOMEDS_Tool::RemoveTemporaryFiles( tmpDir.c_str(), aFiles.in(), true );
+ SALOMEDS_Tool::RemoveTemporaryFiles( tmpDir.c_str(), aFiles, true );
}
}
