1 // Copyright (C) 2007-2014 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License, or (at your option) any later version.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
23 //=============================================================================
24 // File : NETGENPlugin_NETGEN_3D.cxx
25 // Moved here from SMESH_NETGEN_3D.cxx
26 // Created : lundi 27 Janvier 2003
27 // Author : Nadir BOUHAMOU (CEA)
29 //=============================================================================
31 #include "NETGENPlugin_NETGEN_3D.hxx"
33 #include "NETGENPlugin_Hypothesis.hxx"
35 #include <SMDS_MeshElement.hxx>
36 #include <SMDS_MeshNode.hxx>
37 #include <SMESHDS_Mesh.hxx>
38 #include <SMESH_Comment.hxx>
39 #include <SMESH_ControlsDef.hxx>
40 #include <SMESH_Gen.hxx>
41 #include <SMESH_Mesh.hxx>
42 #include <SMESH_MeshEditor.hxx>
43 #include <SMESH_MesherHelper.hxx>
44 #include <SMESH_subMesh.hxx>
45 #include <StdMeshers_MaxElementVolume.hxx>
46 #include <StdMeshers_QuadToTriaAdaptor.hxx>
47 #include <StdMeshers_ViscousLayers.hxx>
49 #include <BRepGProp.hxx>
50 #include <BRep_Tool.hxx>
51 #include <GProp_GProps.hxx>
53 #include <TopExp_Explorer.hxx>
54 #include <TopTools_ListIteratorOfListOfShape.hxx>
57 #include <Standard_Failure.hxx>
58 #include <Standard_ErrorHandler.hxx>
60 #include <utilities.h>
73 #include <occgeom.hpp>
79 extern int OCCGenerateMesh (OCCGeometry&, Mesh*&, MeshingParameters&, int, int);
81 extern int OCCGenerateMesh (OCCGeometry&, Mesh*&, int, int, char*);
83 extern MeshingParameters mparam;
84 extern volatile multithreadt multithread;
86 using namespace nglib;
89 //=============================================================================
93 //=============================================================================
95 NETGENPlugin_NETGEN_3D::NETGENPlugin_NETGEN_3D(int hypId, int studyId,
97 : SMESH_3D_Algo(hypId, studyId, gen)
99 MESSAGE("NETGENPlugin_NETGEN_3D::NETGENPlugin_NETGEN_3D");
101 _shapeType = (1 << TopAbs_SHELL) | (1 << TopAbs_SOLID);// 1 bit /shape type
102 _compatibleHypothesis.push_back("MaxElementVolume");
103 _compatibleHypothesis.push_back("NETGEN_Parameters");
104 _compatibleHypothesis.push_back("ViscousLayers");
106 _maxElementVolume = 0.;
108 _hypMaxElementVolume = NULL;
109 _hypParameters = NULL;
110 _viscousLayersHyp = NULL;
112 _requireShape = false; // can work without shape
115 //=============================================================================
119 //=============================================================================
121 NETGENPlugin_NETGEN_3D::~NETGENPlugin_NETGEN_3D()
123 MESSAGE("NETGENPlugin_NETGEN_3D::~NETGENPlugin_NETGEN_3D");
126 //=============================================================================
130 //=============================================================================
132 bool NETGENPlugin_NETGEN_3D::CheckHypothesis (SMESH_Mesh& aMesh,
133 const TopoDS_Shape& aShape,
134 Hypothesis_Status& aStatus)
136 MESSAGE("NETGENPlugin_NETGEN_3D::CheckHypothesis");
138 _hypMaxElementVolume = NULL;
139 _hypParameters = NULL;
140 _viscousLayersHyp = NULL;
141 _maxElementVolume = DBL_MAX;
143 // for correct work of GetProgress():
144 netgen::multithread.percent = 0.;
145 netgen::multithread.task = "Volume meshing";
146 _progressByTic = -1.;
148 list<const SMESHDS_Hypothesis*>::const_iterator itl;
149 const SMESHDS_Hypothesis* theHyp;
151 const list<const SMESHDS_Hypothesis*>& hyps =
152 GetUsedHypothesis(aMesh, aShape, /*ignoreAuxiliary=*/false);
153 list <const SMESHDS_Hypothesis* >::const_iterator h = hyps.begin();
154 if ( h == hyps.end())
156 aStatus = SMESH_Hypothesis::HYP_OK;
157 return true; // can work with no hypothesis
161 for ( ; h != hyps.end(); ++h )
163 if ( !_hypMaxElementVolume )
164 _hypMaxElementVolume = dynamic_cast< const StdMeshers_MaxElementVolume*> ( *h );
165 // if ( !_viscousLayersHyp ) several _viscousLayersHyp's allowed
166 _viscousLayersHyp = dynamic_cast< const StdMeshers_ViscousLayers*> ( *h );
167 if ( ! _hypParameters )
168 _hypParameters = dynamic_cast< const NETGENPlugin_Hypothesis*> ( *h );
170 if ( *h != _hypMaxElementVolume &&
171 *h != _viscousLayersHyp &&
172 *h != _hypParameters)
173 aStatus = HYP_INCOMPATIBLE;
175 if ( _hypMaxElementVolume && _hypParameters )
176 aStatus = HYP_INCOMPATIBLE;
177 else if ( aStatus == HYP_OK && _viscousLayersHyp )
178 error( _viscousLayersHyp->CheckHypothesis( aMesh, aShape, aStatus ));
180 if ( _hypMaxElementVolume )
181 _maxElementVolume = _hypMaxElementVolume->GetMaxVolume();
183 return aStatus == HYP_OK;
186 //=============================================================================
188 *Here we are going to use the NETGEN mesher
190 //=============================================================================
192 bool NETGENPlugin_NETGEN_3D::Compute(SMESH_Mesh& aMesh,
193 const TopoDS_Shape& aShape)
195 netgen::multithread.terminate = 0;
196 _progressByTic = -1.;
198 SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
200 SMESH_MesherHelper helper(aMesh);
201 bool _quadraticMesh = helper.IsQuadraticSubMesh(aShape);
202 helper.SetElementsOnShape( true );
204 int Netgen_NbOfNodes = 0;
205 double Netgen_point[3];
206 int Netgen_triangle[3];
208 NETGENPlugin_NetgenLibWrapper ngLib;
209 Ng_Mesh * Netgen_mesh = ngLib._ngMesh;
211 // vector of nodes in which node index == netgen ID
212 vector< const SMDS_MeshNode* > nodeVec;
214 const int invalid_ID = -1;
216 SMESH::Controls::Area areaControl;
217 SMESH::Controls::TSequenceOfXYZ nodesCoords;
219 // maps nodes to ng ID
220 typedef map< const SMDS_MeshNode*, int, TIDCompare > TNodeToIDMap;
221 typedef TNodeToIDMap::value_type TN2ID;
222 TNodeToIDMap nodeToNetgenID;
224 // find internal shapes
225 NETGENPlugin_Internals internals( aMesh, aShape, /*is3D=*/true );
227 // ---------------------------------
228 // Feed the Netgen with surface mesh
229 // ---------------------------------
231 TopAbs_ShapeEnum mainType = aMesh.GetShapeToMesh().ShapeType();
232 bool checkReverse = ( mainType == TopAbs_COMPOUND || mainType == TopAbs_COMPSOLID );
234 SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
235 if ( _viscousLayersHyp )
237 proxyMesh = _viscousLayersHyp->Compute( aMesh, aShape );
241 if ( aMesh.NbQuadrangles() > 0 )
243 StdMeshers_QuadToTriaAdaptor* Adaptor = new StdMeshers_QuadToTriaAdaptor;
244 Adaptor->Compute(aMesh,aShape,proxyMesh.get());
245 proxyMesh.reset( Adaptor );
248 for ( TopExp_Explorer exFa( aShape, TopAbs_FACE ); exFa.More(); exFa.Next())
250 const TopoDS_Shape& aShapeFace = exFa.Current();
251 int faceID = meshDS->ShapeToIndex( aShapeFace );
252 bool isInternalFace = internals.isInternalShape( faceID );
254 if ( checkReverse && !isInternalFace &&
255 helper.NbAncestors(aShapeFace, aMesh, aShape.ShapeType()) > 1 )
256 // IsReversedSubMesh() can work wrong on strongly curved faces,
257 // so we use it as less as possible
258 isRev = helper.IsReversedSubMesh( TopoDS::Face( aShapeFace ));
260 const SMESHDS_SubMesh * aSubMeshDSFace = proxyMesh->GetSubMesh( aShapeFace );
261 if ( !aSubMeshDSFace ) continue;
262 SMDS_ElemIteratorPtr iteratorElem = aSubMeshDSFace->GetElements();
263 while ( iteratorElem->more() ) // loop on elements on a geom face
266 const SMDS_MeshElement* elem = iteratorElem->next();
268 return error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
269 if ( elem->NbCornerNodes() != 3 )
270 return error( COMPERR_BAD_INPUT_MESH, "Not triangle element encounters");
272 // Add nodes of triangles and triangles them-selves to netgen mesh
274 // add three nodes of triangle
275 bool hasDegen = false;
276 for ( int iN = 0; iN < 3; ++iN )
278 const SMDS_MeshNode* node = elem->GetNode( iN );
279 const int shapeID = node->getshapeId();
280 if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_EDGE &&
281 helper.IsDegenShape( shapeID ))
283 // ignore all nodes on degeneraged edge and use node on its vertex instead
284 TopoDS_Shape vertex = TopoDS_Iterator( meshDS->IndexToShape( shapeID )).Value();
285 node = SMESH_Algo::VertexNode( TopoDS::Vertex( vertex ), meshDS );
288 int& ngID = nodeToNetgenID.insert(TN2ID( node, invalid_ID )).first->second;
289 if ( ngID == invalid_ID )
291 ngID = ++Netgen_NbOfNodes;
292 Netgen_point [ 0 ] = node->X();
293 Netgen_point [ 1 ] = node->Y();
294 Netgen_point [ 2 ] = node->Z();
295 Ng_AddPoint(Netgen_mesh, Netgen_point);
297 Netgen_triangle[ isRev ? 2-iN : iN ] = ngID;
300 if ( hasDegen && (Netgen_triangle[0] == Netgen_triangle[1] ||
301 Netgen_triangle[0] == Netgen_triangle[2] ||
302 Netgen_triangle[2] == Netgen_triangle[1] ))
305 Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
307 if ( isInternalFace && !proxyMesh->IsTemporary( elem ))
309 swap( Netgen_triangle[1], Netgen_triangle[2] );
310 Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
312 } // loop on elements on a face
313 } // loop on faces of a SOLID or SHELL
315 // insert old nodes into nodeVec
316 nodeVec.resize( nodeToNetgenID.size() + 1, 0 );
317 TNodeToIDMap::iterator n_id = nodeToNetgenID.begin();
318 for ( ; n_id != nodeToNetgenID.end(); ++n_id )
319 nodeVec[ n_id->second ] = n_id->first;
320 nodeToNetgenID.clear();
322 if ( internals.hasInternalVertexInSolid() )
324 netgen::OCCGeometry occgeo;
325 NETGENPlugin_Mesher::AddIntVerticesInSolids( occgeo,
326 (netgen::Mesh&) *Netgen_mesh,
332 // -------------------------
333 // Generate the volume mesh
334 // -------------------------
336 return ( ngLib._isComputeOk = compute( aMesh, helper, nodeVec, Netgen_mesh));
339 //================================================================================
341 * \brief set parameters and generate the volume mesh
343 //================================================================================
345 bool NETGENPlugin_NETGEN_3D::compute(SMESH_Mesh& aMesh,
346 SMESH_MesherHelper& helper,
347 vector< const SMDS_MeshNode* >& nodeVec,
348 Ng_Mesh * Netgen_mesh)
350 netgen::multithread.terminate = 0;
352 netgen::Mesh* ngMesh = (netgen::Mesh*)Netgen_mesh;
353 int Netgen_NbOfNodes = Ng_GetNP(Netgen_mesh);
358 int startWith = netgen::MESHCONST_MESHVOLUME;
359 int endWith = netgen::MESHCONST_OPTVOLUME;
362 NETGENPlugin_Mesher aMesher( &aMesh, helper.GetSubShape(), /*isVolume=*/true );
363 netgen::OCCGeometry occgeo;
365 if ( _hypParameters )
367 aMesher.SetParameters( _hypParameters );
368 if ( !_hypParameters->GetOptimize() )
369 endWith = netgen::MESHCONST_MESHVOLUME;
371 else if ( _hypMaxElementVolume )
373 netgen::mparam.maxh = pow( 72, 1/6. ) * pow( _maxElementVolume, 1/3. );
375 else if ( aMesh.HasShapeToMesh() )
377 aMesher.PrepareOCCgeometry( occgeo, helper.GetSubShape(), aMesh );
378 netgen::mparam.maxh = occgeo.GetBoundingBox().Diam()/2;
382 netgen::Point3d pmin, pmax;
383 ngMesh->GetBox (pmin, pmax);
384 netgen::mparam.maxh = Dist(pmin, pmax)/2;
387 if ( !_hypParameters && aMesh.HasShapeToMesh() )
389 netgen::mparam.minh = aMesher.GetDefaultMinSize( helper.GetSubShape(), netgen::mparam.maxh );
394 #if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
398 ngMesh->CalcLocalH(netgen::mparam.grading);
399 err = netgen::OCCGenerateMesh(occgeo, ngMesh, netgen::mparam, startWith, endWith);
401 ngMesh->CalcLocalH();
402 err = netgen::OCCGenerateMesh(occgeo, ngMesh, startWith, endWith, optstr);
404 if(netgen::multithread.terminate)
407 error(SMESH_Comment("Error in netgen::OCCGenerateMesh() at ") << netgen::multithread.task);
409 catch (Standard_Failure& ex)
411 SMESH_Comment str("Exception in netgen::OCCGenerateMesh()");
412 str << " at " << netgen::multithread.task
413 << ": " << ex.DynamicType()->Name();
414 if ( ex.GetMessageString() && strlen( ex.GetMessageString() ))
415 str << ": " << ex.GetMessageString();
418 catch (netgen::NgException exc)
420 SMESH_Comment str("NgException");
421 if ( strlen( netgen::multithread.task ) > 0 )
422 str << " at " << netgen::multithread.task;
423 str << ": " << exc.What();
428 SMESH_Comment str("Exception in netgen::OCCGenerateMesh()");
429 if ( strlen( netgen::multithread.task ) > 0 )
430 str << " at " << netgen::multithread.task;
434 int Netgen_NbOfNodesNew = Ng_GetNP(Netgen_mesh);
435 int Netgen_NbOfTetra = Ng_GetNE(Netgen_mesh);
437 MESSAGE("End of Volume Mesh Generation. err=" << err <<
438 ", nb new nodes: " << Netgen_NbOfNodesNew - Netgen_NbOfNodes <<
439 ", nb tetra: " << Netgen_NbOfTetra);
441 // -------------------------------------------------------------------
442 // Feed back the SMESHDS with the generated Nodes and Volume Elements
443 // -------------------------------------------------------------------
447 SMESH_ComputeErrorPtr ce = NETGENPlugin_Mesher::ReadErrors(nodeVec);
448 if ( ce && !ce->myBadElements.empty() )
452 bool isOK = ( /*status == NG_OK &&*/ Netgen_NbOfTetra > 0 );// get whatever built
455 double Netgen_point[3];
456 int Netgen_tetrahedron[4];
458 // create and insert new nodes into nodeVec
459 nodeVec.resize( Netgen_NbOfNodesNew + 1, 0 );
460 int nodeIndex = Netgen_NbOfNodes + 1;
461 for ( ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
463 Ng_GetPoint( Netgen_mesh, nodeIndex, Netgen_point );
464 nodeVec.at(nodeIndex) = helper.AddNode(Netgen_point[0], Netgen_point[1], Netgen_point[2]);
467 // create tetrahedrons
468 for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTetra; ++elemIndex )
470 Ng_GetVolumeElement(Netgen_mesh, elemIndex, Netgen_tetrahedron);
473 helper.AddVolume (nodeVec.at( Netgen_tetrahedron[0] ),
474 nodeVec.at( Netgen_tetrahedron[1] ),
475 nodeVec.at( Netgen_tetrahedron[2] ),
476 nodeVec.at( Netgen_tetrahedron[3] ));
487 //================================================================================
489 * \brief Compute tetrahedral mesh from 2D mesh without geometry
491 //================================================================================
493 bool NETGENPlugin_NETGEN_3D::Compute(SMESH_Mesh& aMesh,
494 SMESH_MesherHelper* aHelper)
496 const int invalid_ID = -1;
498 netgen::multithread.terminate = 0;
499 _progressByTic = -1.;
501 SMESH_MesherHelper::MType MeshType = aHelper->IsQuadraticMesh();
502 if ( MeshType == SMESH_MesherHelper::COMP )
503 return error( COMPERR_BAD_INPUT_MESH,
504 SMESH_Comment("Mesh with linear and quadratic elements given"));
506 aHelper->SetIsQuadratic( MeshType == SMESH_MesherHelper::QUADRATIC );
508 // ---------------------------------
509 // Feed the Netgen with surface mesh
510 // ---------------------------------
512 int Netgen_NbOfNodes = 0;
513 int Netgen_param2ndOrder = 0;
514 double Netgen_paramFine = 1.;
515 double Netgen_paramSize = pow( 72, 1/6. ) * pow( _maxElementVolume, 1/3. );
517 double Netgen_point[3];
518 int Netgen_triangle[3];
519 int Netgen_tetrahedron[4];
521 NETGENPlugin_NetgenLibWrapper ngLib;
522 Ng_Mesh * Netgen_mesh = ngLib._ngMesh;
524 SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
525 if ( aMesh.NbQuadrangles() > 0 )
527 StdMeshers_QuadToTriaAdaptor* Adaptor = new StdMeshers_QuadToTriaAdaptor;
528 Adaptor->Compute(aMesh);
529 proxyMesh.reset( Adaptor );
532 // maps nodes to ng ID
533 typedef map< const SMDS_MeshNode*, int, TIDCompare > TNodeToIDMap;
534 typedef TNodeToIDMap::value_type TN2ID;
535 TNodeToIDMap nodeToNetgenID;
537 SMDS_ElemIteratorPtr fIt = proxyMesh->GetFaces();
541 const SMDS_MeshElement* elem = fIt->next();
543 return error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
544 if ( elem->NbCornerNodes() != 3 )
545 return error( COMPERR_BAD_INPUT_MESH, "Not triangle element encounters");
547 // add three nodes of triangle
548 for ( int iN = 0; iN < 3; ++iN )
550 const SMDS_MeshNode* node = elem->GetNode( iN );
551 int& ngID = nodeToNetgenID.insert(TN2ID( node, invalid_ID )).first->second;
552 if ( ngID == invalid_ID )
554 ngID = ++Netgen_NbOfNodes;
555 Netgen_point [ 0 ] = node->X();
556 Netgen_point [ 1 ] = node->Y();
557 Netgen_point [ 2 ] = node->Z();
558 Ng_AddPoint(Netgen_mesh, Netgen_point);
560 Netgen_triangle[ iN ] = ngID;
562 Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
564 proxyMesh.reset(); // delete tmp faces
566 // vector of nodes in which node index == netgen ID
567 vector< const SMDS_MeshNode* > nodeVec ( nodeToNetgenID.size() + 1 );
568 // insert old nodes into nodeVec
569 TNodeToIDMap::iterator n_id = nodeToNetgenID.begin();
570 for ( ; n_id != nodeToNetgenID.end(); ++n_id )
571 nodeVec.at( n_id->second ) = n_id->first;
572 nodeToNetgenID.clear();
574 // -------------------------
575 // Generate the volume mesh
576 // -------------------------
578 return ( ngLib._isComputeOk = compute( aMesh, *aHelper, nodeVec, Netgen_mesh));
581 void NETGENPlugin_NETGEN_3D::CancelCompute()
583 SMESH_Algo::CancelCompute();
584 netgen::multithread.terminate = 1;
587 //================================================================================
589 * \brief Return Compute progress
591 //================================================================================
593 double NETGENPlugin_NETGEN_3D::GetProgress() const
596 const char* volMeshing = "Volume meshing";
597 const char* dlnMeshing = "Delaunay meshing";
598 const double meshingRatio = 0.15;
599 const_cast<NETGENPlugin_NETGEN_3D*>( this )->_progressTic++;
601 if ( _progressByTic < 0. &&
602 ( strncmp( netgen::multithread.task, dlnMeshing, 3 ) == 0 ||
603 strncmp( netgen::multithread.task, volMeshing, 3 ) == 0 ))
605 res = 0.001 + meshingRatio * netgen::multithread.percent / 100.;
606 //cout << netgen::multithread.task << " " <<_progressTic << "-" << netgen::multithread.percent << endl;
608 else // different otimizations
610 if ( _progressByTic < 0. )
611 ((NETGENPlugin_NETGEN_3D*)this)->_progressByTic = meshingRatio / _progressTic;
612 res = _progressByTic * _progressTic;
613 //cout << netgen::multithread.task << " " << _progressTic << " " << res << endl;
615 return Min ( res, 0.98 );
618 //=============================================================================
622 //=============================================================================
624 bool NETGENPlugin_NETGEN_3D::Evaluate(SMESH_Mesh& aMesh,
625 const TopoDS_Shape& aShape,
626 MapShapeNbElems& aResMap)
628 int nbtri = 0, nbqua = 0;
629 double fullArea = 0.0;
630 for (TopExp_Explorer expF(aShape, TopAbs_FACE); expF.More(); expF.Next()) {
631 TopoDS_Face F = TopoDS::Face( expF.Current() );
632 SMESH_subMesh *sm = aMesh.GetSubMesh(F);
633 MapShapeNbElemsItr anIt = aResMap.find(sm);
634 if( anIt==aResMap.end() ) {
635 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
636 smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated",this));
639 std::vector<int> aVec = (*anIt).second;
640 nbtri += Max(aVec[SMDSEntity_Triangle],aVec[SMDSEntity_Quad_Triangle]);
641 nbqua += Max(aVec[SMDSEntity_Quadrangle],aVec[SMDSEntity_Quad_Quadrangle]);
643 BRepGProp::SurfaceProperties(F,G);
644 double anArea = G.Mass();
648 // collect info from edges
649 int nb0d_e = 0, nb1d_e = 0;
650 bool IsQuadratic = false;
652 TopTools_MapOfShape tmpMap;
653 for (TopExp_Explorer expF(aShape, TopAbs_EDGE); expF.More(); expF.Next()) {
654 TopoDS_Edge E = TopoDS::Edge(expF.Current());
655 if( tmpMap.Contains(E) )
658 SMESH_subMesh *aSubMesh = aMesh.GetSubMesh(expF.Current());
659 MapShapeNbElemsItr anIt = aResMap.find(aSubMesh);
660 if( anIt==aResMap.end() ) {
661 SMESH_ComputeErrorPtr& smError = aSubMesh->GetComputeError();
662 smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,
663 "Submesh can not be evaluated",this));
666 std::vector<int> aVec = (*anIt).second;
667 nb0d_e += aVec[SMDSEntity_Node];
668 nb1d_e += Max(aVec[SMDSEntity_Edge],aVec[SMDSEntity_Quad_Edge]);
670 IsQuadratic = (aVec[SMDSEntity_Quad_Edge] > aVec[SMDSEntity_Edge]);
676 double ELen_face = sqrt(2.* ( fullArea/(nbtri+nbqua*2) ) / sqrt(3.0) );
677 double ELen_vol = pow( 72, 1/6. ) * pow( _maxElementVolume, 1/3. );
678 double ELen = Min(ELen_vol,ELen_face*2);
681 BRepGProp::VolumeProperties(aShape,G);
682 double aVolume = G.Mass();
683 double tetrVol = 0.1179*ELen*ELen*ELen;
684 double CoeffQuality = 0.9;
685 int nbVols = int( aVolume/tetrVol/CoeffQuality );
686 int nb1d_f = (nbtri*3 + nbqua*4 - nb1d_e) / 2;
687 int nb1d_in = (nbVols*6 - nb1d_e - nb1d_f ) / 5;
688 std::vector<int> aVec(SMDSEntity_Last);
689 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aVec[i]=0;
691 aVec[SMDSEntity_Node] = nb1d_in/6 + 1 + nb1d_in;
692 aVec[SMDSEntity_Quad_Tetra] = nbVols - nbqua*2;
693 aVec[SMDSEntity_Quad_Pyramid] = nbqua;
696 aVec[SMDSEntity_Node] = nb1d_in/6 + 1;
697 aVec[SMDSEntity_Tetra] = nbVols - nbqua*2;
698 aVec[SMDSEntity_Pyramid] = nbqua;
700 SMESH_subMesh *sm = aMesh.GetSubMesh(aShape);
701 aResMap.insert(std::make_pair(sm,aVec));