1 // Copyright (C) 2007-2015 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 netgen::multithread.task = "Volume meshing";
197 _progressByTic = -1.;
199 SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
201 SMESH_MesherHelper helper(aMesh);
202 bool _quadraticMesh = helper.IsQuadraticSubMesh(aShape);
203 helper.SetElementsOnShape( true );
205 int Netgen_NbOfNodes = 0;
206 double Netgen_point[3];
207 int Netgen_triangle[3];
209 NETGENPlugin_NetgenLibWrapper ngLib;
210 Ng_Mesh * Netgen_mesh = ngLib._ngMesh;
212 // vector of nodes in which node index == netgen ID
213 vector< const SMDS_MeshNode* > nodeVec;
215 const int invalid_ID = -1;
217 SMESH::Controls::Area areaControl;
218 SMESH::Controls::TSequenceOfXYZ nodesCoords;
220 // maps nodes to ng ID
221 typedef map< const SMDS_MeshNode*, int, TIDCompare > TNodeToIDMap;
222 typedef TNodeToIDMap::value_type TN2ID;
223 TNodeToIDMap nodeToNetgenID;
225 // find internal shapes
226 NETGENPlugin_Internals internals( aMesh, aShape, /*is3D=*/true );
228 // ---------------------------------
229 // Feed the Netgen with surface mesh
230 // ---------------------------------
232 TopAbs_ShapeEnum mainType = aMesh.GetShapeToMesh().ShapeType();
233 bool checkReverse = ( mainType == TopAbs_COMPOUND || mainType == TopAbs_COMPSOLID );
235 SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
236 if ( _viscousLayersHyp )
238 netgen::multithread.percent = 3;
239 proxyMesh = _viscousLayersHyp->Compute( aMesh, aShape );
243 if ( aMesh.NbQuadrangles() > 0 )
245 netgen::multithread.percent = 6;
246 StdMeshers_QuadToTriaAdaptor* Adaptor = new StdMeshers_QuadToTriaAdaptor;
247 Adaptor->Compute(aMesh,aShape,proxyMesh.get());
248 proxyMesh.reset( Adaptor );
251 for ( TopExp_Explorer exFa( aShape, TopAbs_FACE ); exFa.More(); exFa.Next())
253 const TopoDS_Shape& aShapeFace = exFa.Current();
254 int faceID = meshDS->ShapeToIndex( aShapeFace );
255 bool isInternalFace = internals.isInternalShape( faceID );
257 if ( checkReverse && !isInternalFace &&
258 helper.NbAncestors(aShapeFace, aMesh, aShape.ShapeType()) > 1 )
259 // IsReversedSubMesh() can work wrong on strongly curved faces,
260 // so we use it as less as possible
261 isRev = helper.IsReversedSubMesh( TopoDS::Face( aShapeFace ));
263 const SMESHDS_SubMesh * aSubMeshDSFace = proxyMesh->GetSubMesh( aShapeFace );
264 if ( !aSubMeshDSFace ) continue;
265 SMDS_ElemIteratorPtr iteratorElem = aSubMeshDSFace->GetElements();
266 while ( iteratorElem->more() ) // loop on elements on a geom face
269 const SMDS_MeshElement* elem = iteratorElem->next();
271 return error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
272 if ( elem->NbCornerNodes() != 3 )
273 return error( COMPERR_BAD_INPUT_MESH, "Not triangle element encounters");
275 // Add nodes of triangles and triangles them-selves to netgen mesh
277 // add three nodes of triangle
278 bool hasDegen = false;
279 for ( int iN = 0; iN < 3; ++iN )
281 const SMDS_MeshNode* node = elem->GetNode( iN );
282 const int shapeID = node->getshapeId();
283 if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_EDGE &&
284 helper.IsDegenShape( shapeID ))
286 // ignore all nodes on degeneraged edge and use node on its vertex instead
287 TopoDS_Shape vertex = TopoDS_Iterator( meshDS->IndexToShape( shapeID )).Value();
288 node = SMESH_Algo::VertexNode( TopoDS::Vertex( vertex ), meshDS );
291 int& ngID = nodeToNetgenID.insert(TN2ID( node, invalid_ID )).first->second;
292 if ( ngID == invalid_ID )
294 ngID = ++Netgen_NbOfNodes;
295 Netgen_point [ 0 ] = node->X();
296 Netgen_point [ 1 ] = node->Y();
297 Netgen_point [ 2 ] = node->Z();
298 Ng_AddPoint(Netgen_mesh, Netgen_point);
300 Netgen_triangle[ isRev ? 2-iN : iN ] = ngID;
303 if ( hasDegen && (Netgen_triangle[0] == Netgen_triangle[1] ||
304 Netgen_triangle[0] == Netgen_triangle[2] ||
305 Netgen_triangle[2] == Netgen_triangle[1] ))
308 Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
310 if ( isInternalFace && !proxyMesh->IsTemporary( elem ))
312 swap( Netgen_triangle[1], Netgen_triangle[2] );
313 Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
315 } // loop on elements on a face
316 } // loop on faces of a SOLID or SHELL
318 // insert old nodes into nodeVec
319 nodeVec.resize( nodeToNetgenID.size() + 1, 0 );
320 TNodeToIDMap::iterator n_id = nodeToNetgenID.begin();
321 for ( ; n_id != nodeToNetgenID.end(); ++n_id )
322 nodeVec[ n_id->second ] = n_id->first;
323 nodeToNetgenID.clear();
325 if ( internals.hasInternalVertexInSolid() )
327 netgen::OCCGeometry occgeo;
328 NETGENPlugin_Mesher::AddIntVerticesInSolids( occgeo,
329 (netgen::Mesh&) *Netgen_mesh,
335 // -------------------------
336 // Generate the volume mesh
337 // -------------------------
339 return ( ngLib._isComputeOk = compute( aMesh, helper, nodeVec, Netgen_mesh));
344 void limitVolumeSize( netgen::Mesh* ngMesh,
347 // get average h of faces
350 for (int i = 1; i <= ngMesh->GetNSE(); i++)
352 const netgen::Element2d& face = ngMesh->SurfaceElement(i);
353 for (int j=1; j <= face.GetNP(); ++j)
355 const netgen::PointIndex & i1 = face.PNumMod(j);
356 const netgen::PointIndex & i2 = face.PNumMod(j+1);
359 const netgen::Point3d & p1 = ngMesh->Point( i1 );
360 const netgen::Point3d & p2 = ngMesh->Point( i2 );
361 faceh += netgen::Dist2( p1, p2 );
366 faceh = Sqrt( faceh / nbh );
369 if ( faceh < 0.5 * maxh ) compareh = -1;
370 else if ( faceh > 1.5 * maxh ) compareh = 1;
372 // cerr << "faceh " << faceh << endl;
373 // cerr << "init maxh " << maxh << endl;
374 // cerr << "compareh " << compareh << endl;
380 // cerr << "maxh " << maxh << endl;
383 netgen::Point3d pmin, pmax;
384 ngMesh->GetBox( pmin, pmax, 0 );
385 const double dx = pmax.X() - pmin.X();
386 const double dy = pmax.Y() - pmin.Y();
387 const double dz = pmax.Z() - pmin.Z();
389 if ( ! & ngMesh->LocalHFunction() )
390 ngMesh->SetLocalH( pmin, pmax, compareh <= 0 ? 0.1 : 0.5 );
392 // adjusted by SALOME_TESTS/Grids/smesh/bugs_08/I8
393 const int nbX = Max( 2, int( dx / maxh * 2 ));
394 const int nbY = Max( 2, int( dy / maxh * 2 ));
395 const int nbZ = Max( 2, int( dz / maxh * 2 ));
398 for ( int i = 0; i <= nbX; ++i )
400 p.X() = pmin.X() + i * dx / nbX;
401 for ( int j = 0; j <= nbY; ++j )
403 p.Y() = pmin.Y() + j * dy / nbY;
404 for ( int k = 0; k <= nbZ; ++k )
406 p.Z() = pmin.Z() + k * dz / nbZ;
407 ngMesh->RestrictLocalH( p, maxh );
414 //================================================================================
416 * \brief set parameters and generate the volume mesh
418 //================================================================================
420 bool NETGENPlugin_NETGEN_3D::compute(SMESH_Mesh& aMesh,
421 SMESH_MesherHelper& helper,
422 vector< const SMDS_MeshNode* >& nodeVec,
423 Ng_Mesh * Netgen_mesh)
425 netgen::multithread.terminate = 0;
427 netgen::Mesh* ngMesh = (netgen::Mesh*)Netgen_mesh;
428 int Netgen_NbOfNodes = Ng_GetNP(Netgen_mesh);
433 int startWith = netgen::MESHCONST_MESHVOLUME;
434 int endWith = netgen::MESHCONST_OPTVOLUME;
437 NETGENPlugin_Mesher aMesher( &aMesh, helper.GetSubShape(), /*isVolume=*/true );
438 netgen::OCCGeometry occgeo;
440 if ( _hypParameters )
442 aMesher.SetParameters( _hypParameters );
443 if ( !_hypParameters->GetOptimize() )
444 endWith = netgen::MESHCONST_MESHVOLUME;
446 else if ( _hypMaxElementVolume )
448 netgen::mparam.maxh = pow( 72, 1/6. ) * pow( _maxElementVolume, 1/3. );
449 // limitVolumeSize( ngMesh, netgen::mparam.maxh ); // result is unpredictable
451 else if ( aMesh.HasShapeToMesh() )
453 aMesher.PrepareOCCgeometry( occgeo, helper.GetSubShape(), aMesh );
454 netgen::mparam.maxh = occgeo.GetBoundingBox().Diam()/2;
458 netgen::Point3d pmin, pmax;
459 ngMesh->GetBox (pmin, pmax);
460 netgen::mparam.maxh = Dist(pmin, pmax)/2;
463 if ( !_hypParameters && aMesh.HasShapeToMesh() )
465 netgen::mparam.minh = aMesher.GetDefaultMinSize( helper.GetSubShape(), netgen::mparam.maxh );
470 #if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
474 ngMesh->CalcLocalH(netgen::mparam.grading);
475 err = netgen::OCCGenerateMesh(occgeo, ngMesh, netgen::mparam, startWith, endWith);
477 ngMesh->CalcLocalH();
478 err = netgen::OCCGenerateMesh(occgeo, ngMesh, startWith, endWith, optstr);
480 if(netgen::multithread.terminate)
483 error(SMESH_Comment("Error in netgen::OCCGenerateMesh() at ") << netgen::multithread.task);
485 catch (Standard_Failure& ex)
487 SMESH_Comment str("Exception in netgen::OCCGenerateMesh()");
488 str << " at " << netgen::multithread.task
489 << ": " << ex.DynamicType()->Name();
490 if ( ex.GetMessageString() && strlen( ex.GetMessageString() ))
491 str << ": " << ex.GetMessageString();
494 catch (netgen::NgException exc)
496 SMESH_Comment str("NgException");
497 if ( strlen( netgen::multithread.task ) > 0 )
498 str << " at " << netgen::multithread.task;
499 str << ": " << exc.What();
504 SMESH_Comment str("Exception in netgen::OCCGenerateMesh()");
505 if ( strlen( netgen::multithread.task ) > 0 )
506 str << " at " << netgen::multithread.task;
510 int Netgen_NbOfNodesNew = Ng_GetNP(Netgen_mesh);
511 int Netgen_NbOfTetra = Ng_GetNE(Netgen_mesh);
513 MESSAGE("End of Volume Mesh Generation. err=" << err <<
514 ", nb new nodes: " << Netgen_NbOfNodesNew - Netgen_NbOfNodes <<
515 ", nb tetra: " << Netgen_NbOfTetra);
517 // -------------------------------------------------------------------
518 // Feed back the SMESHDS with the generated Nodes and Volume Elements
519 // -------------------------------------------------------------------
523 SMESH_ComputeErrorPtr ce = NETGENPlugin_Mesher::ReadErrors(nodeVec);
524 if ( ce && !ce->myBadElements.empty() )
528 bool isOK = ( /*status == NG_OK &&*/ Netgen_NbOfTetra > 0 );// get whatever built
531 double Netgen_point[3];
532 int Netgen_tetrahedron[4];
534 // create and insert new nodes into nodeVec
535 nodeVec.resize( Netgen_NbOfNodesNew + 1, 0 );
536 int nodeIndex = Netgen_NbOfNodes + 1;
537 for ( ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
539 Ng_GetPoint( Netgen_mesh, nodeIndex, Netgen_point );
540 nodeVec.at(nodeIndex) = helper.AddNode(Netgen_point[0], Netgen_point[1], Netgen_point[2]);
543 // create tetrahedrons
544 for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTetra; ++elemIndex )
546 Ng_GetVolumeElement(Netgen_mesh, elemIndex, Netgen_tetrahedron);
549 helper.AddVolume (nodeVec.at( Netgen_tetrahedron[0] ),
550 nodeVec.at( Netgen_tetrahedron[1] ),
551 nodeVec.at( Netgen_tetrahedron[2] ),
552 nodeVec.at( Netgen_tetrahedron[3] ));
563 //================================================================================
565 * \brief Compute tetrahedral mesh from 2D mesh without geometry
567 //================================================================================
569 bool NETGENPlugin_NETGEN_3D::Compute(SMESH_Mesh& aMesh,
570 SMESH_MesherHelper* aHelper)
572 const int invalid_ID = -1;
574 netgen::multithread.terminate = 0;
575 _progressByTic = -1.;
577 SMESH_MesherHelper::MType MeshType = aHelper->IsQuadraticMesh();
578 if ( MeshType == SMESH_MesherHelper::COMP )
579 return error( COMPERR_BAD_INPUT_MESH,
580 SMESH_Comment("Mesh with linear and quadratic elements given"));
582 aHelper->SetIsQuadratic( MeshType == SMESH_MesherHelper::QUADRATIC );
584 // ---------------------------------
585 // Feed the Netgen with surface mesh
586 // ---------------------------------
588 int Netgen_NbOfNodes = 0;
589 int Netgen_param2ndOrder = 0;
590 double Netgen_paramFine = 1.;
591 double Netgen_paramSize = pow( 72, 1/6. ) * pow( _maxElementVolume, 1/3. );
593 double Netgen_point[3];
594 int Netgen_triangle[3];
595 int Netgen_tetrahedron[4];
597 NETGENPlugin_NetgenLibWrapper ngLib;
598 Ng_Mesh * Netgen_mesh = ngLib._ngMesh;
600 SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
601 if ( aMesh.NbQuadrangles() > 0 )
603 StdMeshers_QuadToTriaAdaptor* Adaptor = new StdMeshers_QuadToTriaAdaptor;
604 Adaptor->Compute(aMesh);
605 proxyMesh.reset( Adaptor );
608 // maps nodes to ng ID
609 typedef map< const SMDS_MeshNode*, int, TIDCompare > TNodeToIDMap;
610 typedef TNodeToIDMap::value_type TN2ID;
611 TNodeToIDMap nodeToNetgenID;
613 SMDS_ElemIteratorPtr fIt = proxyMesh->GetFaces();
617 const SMDS_MeshElement* elem = fIt->next();
619 return error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
620 if ( elem->NbCornerNodes() != 3 )
621 return error( COMPERR_BAD_INPUT_MESH, "Not triangle element encounters");
623 // add three nodes of triangle
624 for ( int iN = 0; iN < 3; ++iN )
626 const SMDS_MeshNode* node = elem->GetNode( iN );
627 int& ngID = nodeToNetgenID.insert(TN2ID( node, invalid_ID )).first->second;
628 if ( ngID == invalid_ID )
630 ngID = ++Netgen_NbOfNodes;
631 Netgen_point [ 0 ] = node->X();
632 Netgen_point [ 1 ] = node->Y();
633 Netgen_point [ 2 ] = node->Z();
634 Ng_AddPoint(Netgen_mesh, Netgen_point);
636 Netgen_triangle[ iN ] = ngID;
638 Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
640 proxyMesh.reset(); // delete tmp faces
642 // vector of nodes in which node index == netgen ID
643 vector< const SMDS_MeshNode* > nodeVec ( nodeToNetgenID.size() + 1 );
644 // insert old nodes into nodeVec
645 TNodeToIDMap::iterator n_id = nodeToNetgenID.begin();
646 for ( ; n_id != nodeToNetgenID.end(); ++n_id )
647 nodeVec.at( n_id->second ) = n_id->first;
648 nodeToNetgenID.clear();
650 // -------------------------
651 // Generate the volume mesh
652 // -------------------------
654 return ( ngLib._isComputeOk = compute( aMesh, *aHelper, nodeVec, Netgen_mesh));
657 void NETGENPlugin_NETGEN_3D::CancelCompute()
659 SMESH_Algo::CancelCompute();
660 netgen::multithread.terminate = 1;
663 //================================================================================
665 * \brief Return Compute progress
667 //================================================================================
669 double NETGENPlugin_NETGEN_3D::GetProgress() const
672 const char* volMeshing = "Volume meshing";
673 const char* dlnMeshing = "Delaunay meshing";
674 const double meshingRatio = 0.15;
675 const_cast<NETGENPlugin_NETGEN_3D*>( this )->_progressTic++;
677 if ( _progressByTic < 0. &&
678 ( strncmp( netgen::multithread.task, dlnMeshing, 3 ) == 0 ||
679 strncmp( netgen::multithread.task, volMeshing, 3 ) == 0 ))
681 res = 0.001 + meshingRatio * netgen::multithread.percent / 100.;
682 //cout << netgen::multithread.task << " " <<_progressTic << "-" << netgen::multithread.percent << endl;
684 else // different otimizations
686 if ( _progressByTic < 0. )
687 ((NETGENPlugin_NETGEN_3D*)this)->_progressByTic = meshingRatio / _progressTic;
688 res = _progressByTic * _progressTic;
689 //cout << netgen::multithread.task << " " << _progressTic << " " << res << endl;
691 return Min ( res, 0.98 );
694 //=============================================================================
698 //=============================================================================
700 bool NETGENPlugin_NETGEN_3D::Evaluate(SMESH_Mesh& aMesh,
701 const TopoDS_Shape& aShape,
702 MapShapeNbElems& aResMap)
704 int nbtri = 0, nbqua = 0;
705 double fullArea = 0.0;
706 for (TopExp_Explorer expF(aShape, TopAbs_FACE); expF.More(); expF.Next()) {
707 TopoDS_Face F = TopoDS::Face( expF.Current() );
708 SMESH_subMesh *sm = aMesh.GetSubMesh(F);
709 MapShapeNbElemsItr anIt = aResMap.find(sm);
710 if( anIt==aResMap.end() ) {
711 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
712 smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated",this));
715 std::vector<int> aVec = (*anIt).second;
716 nbtri += Max(aVec[SMDSEntity_Triangle],aVec[SMDSEntity_Quad_Triangle]);
717 nbqua += Max(aVec[SMDSEntity_Quadrangle],aVec[SMDSEntity_Quad_Quadrangle]);
719 BRepGProp::SurfaceProperties(F,G);
720 double anArea = G.Mass();
724 // collect info from edges
725 int nb0d_e = 0, nb1d_e = 0;
726 bool IsQuadratic = false;
728 TopTools_MapOfShape tmpMap;
729 for (TopExp_Explorer expF(aShape, TopAbs_EDGE); expF.More(); expF.Next()) {
730 TopoDS_Edge E = TopoDS::Edge(expF.Current());
731 if( tmpMap.Contains(E) )
734 SMESH_subMesh *aSubMesh = aMesh.GetSubMesh(expF.Current());
735 MapShapeNbElemsItr anIt = aResMap.find(aSubMesh);
736 if( anIt==aResMap.end() ) {
737 SMESH_ComputeErrorPtr& smError = aSubMesh->GetComputeError();
738 smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,
739 "Submesh can not be evaluated",this));
742 std::vector<int> aVec = (*anIt).second;
743 nb0d_e += aVec[SMDSEntity_Node];
744 nb1d_e += Max(aVec[SMDSEntity_Edge],aVec[SMDSEntity_Quad_Edge]);
746 IsQuadratic = (aVec[SMDSEntity_Quad_Edge] > aVec[SMDSEntity_Edge]);
752 double ELen_face = sqrt(2.* ( fullArea/(nbtri+nbqua*2) ) / sqrt(3.0) );
753 double ELen_vol = pow( 72, 1/6. ) * pow( _maxElementVolume, 1/3. );
754 double ELen = Min(ELen_vol,ELen_face*2);
757 BRepGProp::VolumeProperties(aShape,G);
758 double aVolume = G.Mass();
759 double tetrVol = 0.1179*ELen*ELen*ELen;
760 double CoeffQuality = 0.9;
761 int nbVols = int( aVolume/tetrVol/CoeffQuality );
762 int nb1d_f = (nbtri*3 + nbqua*4 - nb1d_e) / 2;
763 int nb1d_in = (nbVols*6 - nb1d_e - nb1d_f ) / 5;
764 std::vector<int> aVec(SMDSEntity_Last);
765 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aVec[i]=0;
767 aVec[SMDSEntity_Node] = nb1d_in/6 + 1 + nb1d_in;
768 aVec[SMDSEntity_Quad_Tetra] = nbVols - nbqua*2;
769 aVec[SMDSEntity_Quad_Pyramid] = nbqua;
772 aVec[SMDSEntity_Node] = nb1d_in/6 + 1;
773 aVec[SMDSEntity_Tetra] = nbVols - nbqua*2;
774 aVec[SMDSEntity_Pyramid] = nbqua;
776 SMESH_subMesh *sm = aMesh.GetSubMesh(aShape);
777 aResMap.insert(std::make_pair(sm,aVec));