1 // Copyright (C) 2007-2015 CEA/DEN, EDF R&D, OPEN CASCADE
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
20 // File : NETGENPlugin_NETGEN_2D_ONLY.cxx
21 // Author : Edward AGAPOV (OCC)
24 #include "NETGENPlugin_NETGEN_2D_ONLY.hxx"
26 #include "NETGENPlugin_Mesher.hxx"
27 #include "NETGENPlugin_Hypothesis_2D.hxx"
29 #include <SMDS_MeshElement.hxx>
30 #include <SMDS_MeshNode.hxx>
31 #include <SMESHDS_Mesh.hxx>
32 #include <SMESH_Comment.hxx>
33 #include <SMESH_Gen.hxx>
34 #include <SMESH_Mesh.hxx>
35 #include <SMESH_MesherHelper.hxx>
36 #include <SMESH_subMesh.hxx>
37 #include <StdMeshers_FaceSide.hxx>
38 #include <StdMeshers_LengthFromEdges.hxx>
39 #include <StdMeshers_MaxElementArea.hxx>
40 #include <StdMeshers_QuadranglePreference.hxx>
41 #include <StdMeshers_ViscousLayers2D.hxx>
43 #include <Precision.hxx>
44 #include <Standard_ErrorHandler.hxx>
45 #include <Standard_Failure.hxx>
47 #include <utilities.h>
62 #include <occgeom.hpp>
63 #include <meshing.hpp>
64 //#include <meshtype.hpp>
67 extern int OCCGenerateMesh (OCCGeometry&, Mesh*&, MeshingParameters&, int, int);
69 extern int OCCGenerateMesh (OCCGeometry&, Mesh*&, int, int, char*);
71 extern MeshingParameters mparam;
72 extern void OCCSetLocalMeshSize(OCCGeometry & geom, Mesh & mesh);
76 using namespace netgen;
77 using namespace nglib;
79 //=============================================================================
83 //=============================================================================
85 NETGENPlugin_NETGEN_2D_ONLY::NETGENPlugin_NETGEN_2D_ONLY(int hypId,
88 : SMESH_2D_Algo(hypId, studyId, gen)
90 _name = "NETGEN_2D_ONLY";
92 _shapeType = (1 << TopAbs_FACE);// 1 bit /shape type
93 _onlyUnaryInput = false; // treat all FACEs at once
95 _compatibleHypothesis.push_back("MaxElementArea");
96 _compatibleHypothesis.push_back("LengthFromEdges");
97 _compatibleHypothesis.push_back("QuadranglePreference");
98 _compatibleHypothesis.push_back("NETGEN_Parameters_2D");
99 _compatibleHypothesis.push_back("ViscousLayers2D");
101 _hypMaxElementArea = 0;
102 _hypLengthFromEdges = 0;
103 _hypQuadranglePreference = 0;
107 //=============================================================================
111 //=============================================================================
113 NETGENPlugin_NETGEN_2D_ONLY::~NETGENPlugin_NETGEN_2D_ONLY()
115 MESSAGE("NETGENPlugin_NETGEN_2D_ONLY::~NETGENPlugin_NETGEN_2D_ONLY");
118 //=============================================================================
122 //=============================================================================
124 bool NETGENPlugin_NETGEN_2D_ONLY::CheckHypothesis (SMESH_Mesh& aMesh,
125 const TopoDS_Shape& aShape,
126 Hypothesis_Status& aStatus)
128 _hypMaxElementArea = 0;
129 _hypLengthFromEdges = 0;
130 _hypQuadranglePreference = 0;
134 const list<const SMESHDS_Hypothesis*>& hyps = GetUsedHypothesis(aMesh, aShape, false);
138 aStatus = HYP_OK; //SMESH_Hypothesis::HYP_MISSING;
139 return true; // (PAL13464) can work with no hypothesis, LengthFromEdges is default one
142 aStatus = HYP_MISSING;
145 list<const SMESHDS_Hypothesis*>::const_iterator ith;
146 for (ith = hyps.begin(); ith != hyps.end(); ++ith )
148 const SMESHDS_Hypothesis* hyp = (*ith);
150 string hypName = hyp->GetName();
152 if ( hypName == "MaxElementArea")
153 _hypMaxElementArea = static_cast<const StdMeshers_MaxElementArea*> (hyp);
154 else if ( hypName == "LengthFromEdges" )
155 _hypLengthFromEdges = static_cast<const StdMeshers_LengthFromEdges*> (hyp);
156 else if ( hypName == "QuadranglePreference" )
157 _hypQuadranglePreference = static_cast<const StdMeshers_QuadranglePreference*>(hyp);
158 else if ( hypName == "NETGEN_Parameters_2D" )
159 _hypParameters = static_cast<const NETGENPlugin_Hypothesis_2D*>(hyp);
160 else if ( hypName == StdMeshers_ViscousLayers2D::GetHypType() )
163 aStatus = HYP_INCOMPATIBLE;
168 int nbHyps = bool(_hypMaxElementArea) + bool(_hypLengthFromEdges) + bool(_hypParameters );
170 aStatus = HYP_CONCURENT;
172 error( StdMeshers_ViscousLayers2D::CheckHypothesis( aMesh, aShape, aStatus ));
176 if ( aStatus == HYP_OK && _hypParameters && _hypQuadranglePreference )
178 aStatus = HYP_INCOMPAT_HYPS;
179 return error(SMESH_Comment("\"") << _hypQuadranglePreference->GetName()
180 << "\" and \"" << _hypParameters->GetName()
181 << "\" are incompatible hypotheses");
184 return ( aStatus == HYP_OK );
189 void limitSize( netgen::Mesh* ngMesh,
193 netgen::Point3d pmin, pmax;
194 ngMesh->GetBox( pmin, pmax, 0 );
195 const double dx = pmax.X() - pmin.X();
196 const double dy = pmax.Y() - pmin.Y();
197 const double dz = pmax.Z() - pmin.Z();
199 const int nbX = Max( 2, int( dx / maxh * 3 ));
200 const int nbY = Max( 2, int( dy / maxh * 3 ));
201 const int nbZ = Max( 2, int( dz / maxh * 3 ));
203 if ( ! & ngMesh->LocalHFunction() )
204 ngMesh->SetLocalH( pmin, pmax, 0.1 );
207 for ( int i = 0; i <= nbX; ++i )
209 p.X() = pmin.X() + i * dx / nbX;
210 for ( int j = 0; j <= nbY; ++j )
212 p.Y() = pmin.Y() + j * dy / nbY;
213 for ( int k = 0; k <= nbZ; ++k )
215 p.Z() = pmin.Z() + k * dz / nbZ;
216 ngMesh->RestrictLocalH( p, maxh );
223 //=============================================================================
225 *Here we are going to use the NETGEN mesher
227 //=============================================================================
229 bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
230 const TopoDS_Shape& aShape)
232 netgen::multithread.terminate = 0;
233 //netgen::multithread.task = "Surface meshing";
235 SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
236 SMESH_MesherHelper helper(aMesh);
237 helper.SetElementsOnShape( true );
239 NETGENPlugin_NetgenLibWrapper ngLib;
240 ngLib._isComputeOk = false;
242 netgen::Mesh ngMeshNoLocSize;
243 netgen::Mesh * ngMeshes[2] = { (netgen::Mesh*) ngLib._ngMesh, & ngMeshNoLocSize };
244 netgen::OCCGeometry occgeoComm;
246 // min / max sizes are set as follows:
247 // if ( _hypParameters )
248 // min and max are defined by the user
249 // else if ( _hypLengthFromEdges )
250 // min = aMesher.GetDefaultMinSize()
251 // max = average segment len of a FACE
252 // else if ( _hypMaxElementArea )
253 // min = aMesher.GetDefaultMinSize()
254 // max = f( _hypMaxElementArea )
256 // min = aMesher.GetDefaultMinSize()
257 // max = max segment len of a FACE
259 NETGENPlugin_Mesher aMesher( &aMesh, aShape, /*isVolume=*/false);
260 aMesher.SetParameters( _hypParameters ); // _hypParameters -> netgen::mparam
261 const bool toOptimize = _hypParameters ? _hypParameters->GetOptimize() : true;
262 if ( _hypMaxElementArea )
264 netgen::mparam.maxh = sqrt( 2. * _hypMaxElementArea->GetMaxArea() / sqrt(3.0) );
266 if ( _hypQuadranglePreference )
267 netgen::mparam.quad = true;
269 // local size is common for all FACEs in aShape?
270 const bool isCommonLocalSize = ( !_hypLengthFromEdges && !_hypMaxElementArea && netgen::mparam.uselocalh );
271 const bool isDefaultHyp = ( !_hypLengthFromEdges && !_hypMaxElementArea && !_hypParameters );
273 if ( isCommonLocalSize ) // compute common local size in ngMeshes[0]
275 //list< SMESH_subMesh* > meshedSM[4]; --> all sub-shapes are added to occgeoComm
276 aMesher.PrepareOCCgeometry( occgeoComm, aShape, aMesh );//, meshedSM );
278 // local size set at MESHCONST_ANALYSE step depends on
279 // minh, face_maxh, grading and curvaturesafety; find minh if not set by the user
280 if ( !_hypParameters || netgen::mparam.minh < DBL_MIN )
282 if ( !_hypParameters )
283 netgen::mparam.maxh = occgeoComm.GetBoundingBox().Diam() / 3.;
284 netgen::mparam.minh = aMesher.GetDefaultMinSize( aShape, netgen::mparam.maxh );
286 // set local size depending on curvature and NOT closeness of EDGEs
287 netgen::occparam.resthcloseedgeenable = false;
288 //netgen::occparam.resthcloseedgefac = 1.0 + netgen::mparam.grading;
289 occgeoComm.face_maxh = netgen::mparam.maxh;
290 netgen::OCCSetLocalMeshSize( occgeoComm, *ngMeshes[0] );
291 occgeoComm.emap.Clear();
292 occgeoComm.vmap.Clear();
294 // set local size according to size of existing segments
295 const double factor = netgen::occparam.resthcloseedgefac;
296 TopTools_IndexedMapOfShape edgeMap;
297 TopExp::MapShapes( aMesh.GetShapeToMesh(), TopAbs_EDGE, edgeMap );
298 for ( int iE = 1; iE <= edgeMap.Extent(); ++iE )
300 const TopoDS_Shape& edge = edgeMap( iE );
301 if ( SMESH_Algo::isDegenerated( TopoDS::Edge( edge ))/* ||
302 helper.IsSubShape( edge, aShape )*/)
304 SMESHDS_SubMesh* smDS = meshDS->MeshElements( edge );
305 if ( !smDS ) continue;
306 SMDS_ElemIteratorPtr segIt = smDS->GetElements();
307 while ( segIt->more() )
309 const SMDS_MeshElement* seg = segIt->next();
310 SMESH_TNodeXYZ n1 = seg->GetNode(0);
311 SMESH_TNodeXYZ n2 = seg->GetNode(1);
312 gp_XYZ p = 0.5 * ( n1 + n2 );
313 netgen::Point3d pi(p.X(), p.Y(), p.Z());
314 ngMeshes[0]->RestrictLocalH( pi, factor * ( n1 - n2 ).Modulus() );
318 netgen::mparam.uselocalh = toOptimize; // restore as it is used at surface optimization
320 // ==================
322 // ==================
324 vector< const SMDS_MeshNode* > nodeVec;
326 TopExp_Explorer fExp( aShape, TopAbs_FACE );
327 for ( int iF = 0; fExp.More(); fExp.Next(), ++iF )
329 TopoDS_Face F = TopoDS::Face( fExp.Current() /*.Oriented( TopAbs_FORWARD )*/);
330 int faceID = meshDS->ShapeToIndex( F );
331 SMESH_ComputeErrorPtr& faceErr = aMesh.GetSubMesh( F )->GetComputeError();
333 _quadraticMesh = helper.IsQuadraticSubMesh( F );
334 const bool ignoreMediumNodes = _quadraticMesh;
336 // build viscous layers if required
337 if ( F.Orientation() != TopAbs_FORWARD &&
338 F.Orientation() != TopAbs_REVERSED )
339 F.Orientation( TopAbs_FORWARD ); // avoid pb with TopAbs_INTERNAL
340 SMESH_ProxyMesh::Ptr proxyMesh = StdMeshers_ViscousLayers2D::Compute( aMesh, F );
344 // ------------------------
345 // get all EDGEs of a FACE
346 // ------------------------
348 StdMeshers_FaceSide::GetFaceWires( F, aMesh, ignoreMediumNodes, faceErr, proxyMesh );
349 if ( faceErr && !faceErr->IsOK() )
351 int nbWires = wires.size();
355 ( new SMESH_ComputeError
356 ( COMPERR_ALGO_FAILED, "Problem in StdMeshers_FaceSide::GetFaceWires()" ));
359 if ( wires[0]->NbSegments() < 3 ) // ex: a circle with 2 segments
362 ( new SMESH_ComputeError
363 ( COMPERR_BAD_INPUT_MESH, SMESH_Comment("Too few segments: ")<<wires[0]->NbSegments()) );
367 // ----------------------
368 // compute maxh of a FACE
369 // ----------------------
371 if ( !_hypParameters )
373 double edgeLength = 0;
374 if (_hypLengthFromEdges )
376 // compute edgeLength as an average segment length
378 for ( int iW = 0; iW < nbWires; ++iW )
380 edgeLength += wires[ iW ]->Length();
381 nbSegments += wires[ iW ]->NbSegments();
384 edgeLength /= nbSegments;
385 netgen::mparam.maxh = edgeLength;
387 else if ( isDefaultHyp )
389 // set edgeLength by a longest segment
391 for ( int iW = 0; iW < nbWires; ++iW )
393 const UVPtStructVec& points = wires[ iW ]->GetUVPtStruct();
394 if ( points.empty() )
395 return error( COMPERR_BAD_INPUT_MESH );
396 gp_Pnt pPrev = SMESH_TNodeXYZ( points[0].node );
397 for ( size_t i = 1; i < points.size(); ++i )
399 gp_Pnt p = SMESH_TNodeXYZ( points[i].node );
400 maxSeg2 = Max( maxSeg2, p.SquareDistance( pPrev ));
404 edgeLength = sqrt( maxSeg2 ) * 1.05;
405 netgen::mparam.maxh = edgeLength;
407 if ( netgen::mparam.maxh < DBL_MIN )
408 netgen::mparam.maxh = occgeoComm.GetBoundingBox().Diam();
410 if ( !isCommonLocalSize )
412 netgen::mparam.minh = aMesher.GetDefaultMinSize( F, netgen::mparam.maxh );
417 netgen::OCCGeometry occgeom;
419 occgeom.fmap.Add( F );
420 occgeom.CalcBoundingBox();
421 occgeom.facemeshstatus.SetSize(1);
422 occgeom.facemeshstatus = 0;
423 occgeom.face_maxh_modified.SetSize(1);
424 occgeom.face_maxh_modified = 0;
425 occgeom.face_maxh.SetSize(1);
426 occgeom.face_maxh = netgen::mparam.maxh;
428 // -------------------------
430 // -------------------------
432 // MESHCONST_ANALYSE step may lead to a failure, so we make an attempt
433 // w/o MESHCONST_ANALYSE at the second loop
435 enum { LOC_SIZE, NO_LOC_SIZE };
436 int iLoop = isCommonLocalSize ? 0 : 1;
437 for ( ; iLoop < 2; iLoop++ )
439 //bool isMESHCONST_ANALYSE = false;
442 netgen::Mesh * ngMesh = ngMeshes[ iLoop ];
443 ngMesh->DeleteMesh();
445 if ( iLoop == NO_LOC_SIZE )
447 ngMesh->SetGlobalH ( mparam.maxh );
448 ngMesh->SetMinimalH( mparam.minh );
449 Box<3> bb = occgeom.GetBoundingBox();
450 bb.Increase (bb.Diam()/10);
451 ngMesh->SetLocalH (bb.PMin(), bb.PMax(), mparam.grading);
455 faceErr = aMesher.AddSegmentsToMesh( *ngMesh, occgeom, wires, helper, nodeVec,
456 /*overrideMinH=*/!_hypParameters);
457 if ( faceErr && !faceErr->IsOK() )
460 //if ( !isCommonLocalSize )
461 //limitSize( ngMesh, mparam.maxh * 0.8);
463 // -------------------------
464 // Generate surface mesh
465 // -------------------------
467 const int startWith = MESHCONST_MESHSURFACE;
468 const int endWith = toOptimize ? MESHCONST_OPTSURFACE : MESHCONST_MESHSURFACE;
475 err = netgen::OCCGenerateMesh(occgeom, ngMesh, netgen::mparam, startWith, endWith);
478 err = netgen::OCCGenerateMesh(occgeom, ngMesh, startWith, endWith, optstr);
480 if ( netgen::multithread.terminate )
483 str << "Error in netgen::OCCGenerateMesh() at " << netgen::multithread.task;
485 catch (Standard_Failure& ex)
488 str << "Exception in netgen::OCCGenerateMesh()"
489 << " at " << netgen::multithread.task
490 << ": " << ex.DynamicType()->Name();
491 if ( ex.GetMessageString() && strlen( ex.GetMessageString() ))
492 str << ": " << ex.GetMessageString();
496 str << "Exception in netgen::OCCGenerateMesh()"
497 << " at " << netgen::multithread.task;
501 if ( aMesher.FixFaceMesh( occgeom, *ngMesh, 1 ))
503 if ( iLoop == LOC_SIZE )
505 netgen::mparam.minh = netgen::mparam.maxh;
506 netgen::mparam.maxh = 0;
507 for ( int iW = 0; iW < wires.size(); ++iW )
509 StdMeshers_FaceSidePtr wire = wires[ iW ];
510 const vector<UVPtStruct>& uvPtVec = wire->GetUVPtStruct();
511 for ( size_t iP = 1; iP < uvPtVec.size(); ++iP )
513 SMESH_TNodeXYZ p( uvPtVec[ iP ].node );
514 netgen::Point3d np( p.X(),p.Y(),p.Z());
515 double segLen = p.Distance( uvPtVec[ iP-1 ].node );
516 double size = ngMesh->GetH( np );
517 netgen::mparam.minh = Min( netgen::mparam.minh, size );
518 netgen::mparam.maxh = Max( netgen::mparam.maxh, segLen );
521 //cerr << "min " << netgen::mparam.minh << " max " << netgen::mparam.maxh << endl;
522 netgen::mparam.minh *= 0.9;
523 netgen::mparam.maxh *= 1.1;
528 faceErr.reset( new SMESH_ComputeError( COMPERR_ALGO_FAILED, str ));
533 // ----------------------------------------------------
534 // Fill the SMESHDS with the generated nodes and faces
535 // ----------------------------------------------------
537 int nbNodes = ngMesh->GetNP();
538 int nbFaces = ngMesh->GetNSE();
540 int nbInputNodes = nodeVec.size()-1;
541 nodeVec.resize( nbNodes+1, 0 );
544 for ( int ngID = nbInputNodes + 1; ngID <= nbNodes; ++ngID )
546 const MeshPoint& ngPoint = ngMesh->Point( ngID );
547 SMDS_MeshNode * node = meshDS->AddNode(ngPoint(0), ngPoint(1), ngPoint(2));
548 nodeVec[ ngID ] = node;
553 vector<const SMDS_MeshNode*> nodes;
554 for ( i = 1; i <= nbFaces ; ++i )
556 const Element2d& elem = ngMesh->SurfaceElement(i);
557 nodes.resize( elem.GetNP() );
558 for (j=1; j <= elem.GetNP(); ++j)
560 int pind = elem.PNum(j);
563 nodes[ j-1 ] = nodeVec[ pind ];
564 if ( nodes[ j-1 ]->GetPosition()->GetTypeOfPosition() == SMDS_TOP_3DSPACE )
566 const PointGeomInfo& pgi = elem.GeomInfoPi(j);
567 meshDS->SetNodeOnFace( nodes[ j-1 ], faceID, pgi.u, pgi.v);
570 if ( j > elem.GetNP() )
572 SMDS_MeshFace* face = 0;
573 if ( elem.GetType() == TRIG )
574 face = helper.AddFace(nodes[0],nodes[1],nodes[2]);
576 face = helper.AddFace(nodes[0],nodes[1],nodes[2],nodes[3]);
587 void NETGENPlugin_NETGEN_2D_ONLY::CancelCompute()
589 SMESH_Algo::CancelCompute();
590 netgen::multithread.terminate = 1;
593 //================================================================================
595 * \brief Return progress of Compute() [0.,1]
597 //================================================================================
599 double NETGENPlugin_NETGEN_2D_ONLY::GetProgress() const
602 // const char* task1 = "Surface meshing";
603 // //const char* task2 = "Optimizing surface";
604 // double& progress = const_cast<NETGENPlugin_NETGEN_2D_ONLY*>( this )->_progress;
605 // if ( _progressByTic < 0. &&
606 // strncmp( netgen::multithread.task, task1, 3 ) == 0 )
608 // progress = Min( 0.25, SMESH_Algo::GetProgressByTic() ); // [0, 0.25]
610 // else //if ( strncmp( netgen::multithread.task, task2, 3 ) == 0)
612 // if ( _progressByTic < 0 )
614 // NETGENPlugin_NETGEN_2D_ONLY* me = (NETGENPlugin_NETGEN_2D_ONLY*) this;
615 // me->_progressByTic = 0.25 / (_progressTic+1);
617 // const_cast<NETGENPlugin_NETGEN_2D_ONLY*>( this )->_progressTic++;
618 // progress = Max( progress, _progressByTic * _progressTic );
620 // //cout << netgen::multithread.task << " " << _progressTic << endl;
621 // return Min( progress, 0.99 );
624 //=============================================================================
628 //=============================================================================
630 bool NETGENPlugin_NETGEN_2D_ONLY::Evaluate(SMESH_Mesh& aMesh,
631 const TopoDS_Shape& aShape,
632 MapShapeNbElems& aResMap)
634 TopoDS_Face F = TopoDS::Face(aShape);
638 // collect info from edges
639 int nb0d = 0, nb1d = 0;
640 bool IsQuadratic = false;
642 double fullLen = 0.0;
643 TopTools_MapOfShape tmpMap;
644 for (TopExp_Explorer exp(F, TopAbs_EDGE); exp.More(); exp.Next()) {
645 TopoDS_Edge E = TopoDS::Edge(exp.Current());
646 if( tmpMap.Contains(E) )
649 SMESH_subMesh *aSubMesh = aMesh.GetSubMesh(exp.Current());
650 MapShapeNbElemsItr anIt = aResMap.find(aSubMesh);
651 if( anIt==aResMap.end() ) {
652 SMESH_subMesh *sm = aMesh.GetSubMesh(F);
653 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
654 smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated",this));
657 std::vector<int> aVec = (*anIt).second;
658 nb0d += aVec[SMDSEntity_Node];
659 nb1d += Max(aVec[SMDSEntity_Edge],aVec[SMDSEntity_Quad_Edge]);
660 double aLen = SMESH_Algo::EdgeLength(E);
663 IsQuadratic = (aVec[SMDSEntity_Quad_Edge] > aVec[SMDSEntity_Edge]);
669 // compute edge length
671 if (_hypLengthFromEdges || !_hypLengthFromEdges && !_hypMaxElementArea) {
673 ELen = fullLen / nb1d;
675 if ( _hypMaxElementArea ) {
676 double maxArea = _hypMaxElementArea->GetMaxArea();
677 ELen = sqrt(2. * maxArea/sqrt(3.0));
680 BRepGProp::SurfaceProperties(F,G);
681 double anArea = G.Mass();
683 const int hugeNb = numeric_limits<int>::max()/10;
684 if ( anArea / hugeNb > ELen*ELen )
686 SMESH_subMesh *sm = aMesh.GetSubMesh(F);
687 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
688 smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated.\nToo small element length",this));
691 int nbFaces = (int) ( anArea / ( ELen*ELen*sqrt(3.) / 4 ) );
692 int nbNodes = (int) ( ( nbFaces*3 - (nb1d-1)*2 ) / 6 + 1 );
693 std::vector<int> aVec(SMDSEntity_Last);
694 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aVec[i]=0;
696 aVec[SMDSEntity_Node] = nbNodes;
697 aVec[SMDSEntity_Quad_Triangle] = nbFaces;
700 aVec[SMDSEntity_Node] = nbNodes;
701 aVec[SMDSEntity_Triangle] = nbFaces;
703 SMESH_subMesh *sm = aMesh.GetSubMesh(F);
704 aResMap.insert(std::make_pair(sm,aVec));