1 // Copyright (C) 2007-2008 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.
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
22 //=============================================================================
23 // File : NETGENPlugin_NETGEN_3D.cxx
24 // Moved here from SMESH_NETGEN_3D.cxx
25 // Created : lundi 27 Janvier 2003
26 // Author : Nadir BOUHAMOU (CEA)
28 //=============================================================================
30 #include "NETGENPlugin_NETGEN_3D.hxx"
32 #include "NETGENPlugin_Mesher.hxx"
34 #include "SMDS_MeshElement.hxx"
35 #include "SMDS_MeshNode.hxx"
36 #include "SMESHDS_Mesh.hxx"
37 #include "SMESH_Comment.hxx"
38 #include "SMESH_ControlsDef.hxx"
39 #include "SMESH_Gen.hxx"
40 #include "SMESH_Mesh.hxx"
41 #include "SMESH_MesherHelper.hxx"
42 #include "SMESH_MeshEditor.hxx"
43 #include "StdMeshers_QuadToTriaAdaptor.hxx"
45 #include <BRep_Tool.hxx>
46 #include <GProp_GProps.hxx>
47 #include <BRepGProp.hxx>
49 #include <TopExp_Explorer.hxx>
52 #include <Standard_Failure.hxx>
53 #include <Standard_ErrorHandler.hxx>
55 #include "utilities.h"
68 using namespace nglib;
71 //=============================================================================
75 //=============================================================================
77 NETGENPlugin_NETGEN_3D::NETGENPlugin_NETGEN_3D(int hypId, int studyId,
79 : SMESH_3D_Algo(hypId, studyId, gen)
81 MESSAGE("NETGENPlugin_NETGEN_3D::NETGENPlugin_NETGEN_3D");
83 _shapeType = (1 << TopAbs_SHELL) | (1 << TopAbs_SOLID);// 1 bit /shape type
84 _compatibleHypothesis.push_back("MaxElementVolume");
86 _maxElementVolume = 0.;
88 _hypMaxElementVolume = NULL;
90 _requireShape = false; // can work without shape
93 //=============================================================================
97 //=============================================================================
99 NETGENPlugin_NETGEN_3D::~NETGENPlugin_NETGEN_3D()
101 MESSAGE("NETGENPlugin_NETGEN_3D::~NETGENPlugin_NETGEN_3D");
104 //=============================================================================
108 //=============================================================================
110 bool NETGENPlugin_NETGEN_3D::CheckHypothesis
112 const TopoDS_Shape& aShape,
113 SMESH_Hypothesis::Hypothesis_Status& aStatus)
115 MESSAGE("NETGENPlugin_NETGEN_3D::CheckHypothesis");
117 _hypMaxElementVolume = NULL;
118 _maxElementVolume = DBL_MAX;
120 list<const SMESHDS_Hypothesis*>::const_iterator itl;
121 const SMESHDS_Hypothesis* theHyp;
123 const list<const SMESHDS_Hypothesis*>& hyps = GetUsedHypothesis(aMesh, aShape);
124 int nbHyp = hyps.size();
127 aStatus = SMESH_Hypothesis::HYP_OK;
128 //aStatus = SMESH_Hypothesis::HYP_MISSING;
129 return true; // can work with no hypothesis
133 theHyp = (*itl); // use only the first hypothesis
135 string hypName = theHyp->GetName();
139 if (hypName == "MaxElementVolume")
141 _hypMaxElementVolume = static_cast<const StdMeshers_MaxElementVolume*> (theHyp);
142 ASSERT(_hypMaxElementVolume);
143 _maxElementVolume = _hypMaxElementVolume->GetMaxVolume();
145 aStatus = SMESH_Hypothesis::HYP_OK;
148 aStatus = SMESH_Hypothesis::HYP_INCOMPATIBLE;
153 //=============================================================================
155 *Here we are going to use the NETGEN mesher
157 //=============================================================================
159 bool NETGENPlugin_NETGEN_3D::Compute(SMESH_Mesh& aMesh,
160 const TopoDS_Shape& aShape)
162 MESSAGE("NETGENPlugin_NETGEN_3D::Compute with maxElmentsize = " << _maxElementVolume);
164 SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
166 const int invalid_ID = -1;
168 SMESH::Controls::Area areaControl;
169 SMESH::Controls::TSequenceOfXYZ nodesCoords;
171 // -------------------------------------------------------------------
172 // get triangles on aShell and make a map of nodes to Netgen node IDs
173 // -------------------------------------------------------------------
175 SMESH_MesherHelper helper(aMesh);
176 SMESH_MesherHelper* myTool = &helper;
177 bool _quadraticMesh = myTool->IsQuadraticSubMesh(aShape);
179 typedef map< const SMDS_MeshNode*, int, TIDCompare > TNodeToIDMap;
180 TNodeToIDMap nodeToNetgenID;
181 list< const SMDS_MeshElement* > triangles;
182 list< bool > isReversed; // orientation of triangles
184 TopAbs_ShapeEnum mainType = aMesh.GetShapeToMesh().ShapeType();
185 bool checkReverse = ( mainType == TopAbs_COMPOUND || mainType == TopAbs_COMPSOLID );
187 // for the degeneraged edge: ignore all but one node on it;
188 // map storing ids of degen edges and vertices and their netgen id:
189 map< int, int* > degenShapeIdToPtrNgId;
190 map< int, int* >::iterator shId_ngId;
191 list< int > degenNgIds;
193 StdMeshers_QuadToTriaAdaptor Adaptor;
194 Adaptor.Compute(aMesh,aShape);
196 for (TopExp_Explorer exp(aShape,TopAbs_FACE);exp.More();exp.Next())
198 const TopoDS_Shape& aShapeFace = exp.Current();
199 const SMESHDS_SubMesh * aSubMeshDSFace = meshDS->MeshElements( aShapeFace );
200 if ( aSubMeshDSFace )
203 if ( checkReverse && helper.NbAncestors(aShapeFace, aMesh, aShape.ShapeType()) > 1 )
204 // IsReversedSubMesh() can work wrong on strongly curved faces,
205 // so we use it as less as possible
206 isRev = SMESH_Algo::IsReversedSubMesh( TopoDS::Face(aShapeFace), meshDS );
208 SMDS_ElemIteratorPtr iteratorElem = aSubMeshDSFace->GetElements();
209 while ( iteratorElem->more() ) // loop on elements on a face
212 const SMDS_MeshElement* elem = iteratorElem->next();
214 return error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
215 bool isTraingle = ( elem->NbNodes()==3 || (_quadraticMesh && elem->NbNodes()==6 ));
218 const list<const SMDS_FaceOfNodes*>* faces = Adaptor.GetTriangles(elem);
220 return error( COMPERR_BAD_INPUT_MESH,
221 SMESH_Comment("No triangles in adaptor for element ")<<elem->GetID());
223 list<const SMDS_FaceOfNodes*>::const_iterator itf = faces->begin();
224 for(; itf!=faces->end(); itf++ ) {
225 triangles.push_back( (*itf) );
226 isReversed.push_back( isRev );
227 // put triange's nodes to nodeToNetgenID map
228 SMDS_ElemIteratorPtr triangleNodesIt = (*itf)->nodesIterator();
229 while ( triangleNodesIt->more() ) {
230 const SMDS_MeshNode * node =
231 static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
232 if(myTool->IsMedium(node))
234 nodeToNetgenID.insert( make_pair( node, invalid_ID ));
240 triangles.push_back( elem );
241 isReversed.push_back( isRev );
242 // put elem nodes to nodeToNetgenID map
243 SMDS_ElemIteratorPtr triangleNodesIt = elem->nodesIterator();
244 while ( triangleNodesIt->more() ) {
245 const SMDS_MeshNode * node =
246 static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
247 if(myTool->IsMedium(node))
249 nodeToNetgenID.insert( make_pair( node, invalid_ID ));
253 // check if a trainge is degenerated
254 areaControl.GetPoints( elem, nodesCoords );
255 double area = areaControl.GetValue( nodesCoords );
256 if ( area <= DBL_MIN ) {
257 MESSAGE( "Warning: Degenerated " << elem );
261 // look for degeneraged edges and vetices
262 for (TopExp_Explorer expE(aShapeFace,TopAbs_EDGE);expE.More();expE.Next())
264 TopoDS_Edge aShapeEdge = TopoDS::Edge( expE.Current() );
265 if ( BRep_Tool::Degenerated( aShapeEdge ))
267 degenNgIds.push_back( invalid_ID );
268 int* ptrIdOnEdge = & degenNgIds.back();
270 int edgeID = meshDS->ShapeToIndex( aShapeEdge );
271 degenShapeIdToPtrNgId.insert( make_pair( edgeID, ptrIdOnEdge ));
272 // remember vertex id
273 int vertexID = meshDS->ShapeToIndex( TopExp::FirstVertex( aShapeEdge ));
274 degenShapeIdToPtrNgId.insert( make_pair( vertexID, ptrIdOnEdge ));
279 // ---------------------------------
280 // Feed the Netgen with surface mesh
281 // ---------------------------------
283 int Netgen_NbOfNodes = 0;
284 int Netgen_param2ndOrder = 0;
285 double Netgen_paramFine = 1.;
286 double Netgen_paramSize = pow( 72, 1/6. ) * pow( _maxElementVolume, 1/3. );
288 double Netgen_point[3];
289 int Netgen_triangle[3];
290 int Netgen_tetrahedron[4];
294 Ng_Mesh * Netgen_mesh = Ng_NewMesh();
296 // set nodes and remember thier netgen IDs
297 bool isDegen = false, hasDegen = !degenShapeIdToPtrNgId.empty();
298 TNodeToIDMap::iterator n_id = nodeToNetgenID.begin();
299 for ( ; n_id != nodeToNetgenID.end(); ++n_id )
301 const SMDS_MeshNode* node = n_id->first;
303 // ignore nodes on degenerated edge
305 int shapeId = node->GetPosition()->GetShapeId();
306 shId_ngId = degenShapeIdToPtrNgId.find( shapeId );
307 isDegen = ( shId_ngId != degenShapeIdToPtrNgId.end() );
308 if ( isDegen && *(shId_ngId->second) != invalid_ID ) {
309 n_id->second = *(shId_ngId->second);
313 Netgen_point [ 0 ] = node->X();
314 Netgen_point [ 1 ] = node->Y();
315 Netgen_point [ 2 ] = node->Z();
316 Ng_AddPoint(Netgen_mesh, Netgen_point);
317 n_id->second = ++Netgen_NbOfNodes; // set netgen ID
319 if ( isDegen ) // all nodes on a degen edge get one netgen ID
320 *(shId_ngId->second) = n_id->second;
324 list< const SMDS_MeshElement* >::iterator tria = triangles.begin();
325 list< bool >::iterator reverse = isReversed.begin();
326 for ( ; tria != triangles.end(); ++tria, ++reverse )
329 SMDS_ElemIteratorPtr triangleNodesIt = (*tria)->nodesIterator();
330 while ( triangleNodesIt->more() ) {
331 const SMDS_MeshNode * node =
332 static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
333 if(myTool->IsMedium(node))
335 Netgen_triangle[ *reverse ? 2 - i : i ] = nodeToNetgenID[ node ];
339 // ignore degenerated triangles, they have 2 or 3 same ids
340 (Netgen_triangle[0] != Netgen_triangle[1] &&
341 Netgen_triangle[0] != Netgen_triangle[2] &&
342 Netgen_triangle[2] != Netgen_triangle[1] ))
344 Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
348 // -------------------------
349 // Generate the volume mesh
350 // -------------------------
352 Ng_Meshing_Parameters Netgen_param;
354 Netgen_param.secondorder = Netgen_param2ndOrder;
355 Netgen_param.fineness = Netgen_paramFine;
356 Netgen_param.maxh = Netgen_paramSize;
361 #if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
364 status = Ng_GenerateVolumeMesh(Netgen_mesh, &Netgen_param);
366 catch (Standard_Failure& exc) {
367 error(COMPERR_OCC_EXCEPTION, exc.GetMessageString());
368 status = NG_VOLUME_FAILURE;
371 error("Exception in Ng_GenerateVolumeMesh()");
372 status = NG_VOLUME_FAILURE;
374 if ( GetComputeError()->IsOK() ) {
376 case NG_SURFACE_INPUT_ERROR:error( status, "NG_SURFACE_INPUT_ERROR");
377 case NG_VOLUME_FAILURE: error( status, "NG_VOLUME_FAILURE");
378 case NG_STL_INPUT_ERROR: error( status, "NG_STL_INPUT_ERROR");
379 case NG_SURFACE_FAILURE: error( status, "NG_SURFACE_FAILURE");
380 case NG_FILE_NOT_FOUND: error( status, "NG_FILE_NOT_FOUND");
384 int Netgen_NbOfNodesNew = Ng_GetNP(Netgen_mesh);
386 int Netgen_NbOfTetra = Ng_GetNE(Netgen_mesh);
388 MESSAGE("End of Volume Mesh Generation. status=" << status <<
389 ", nb new nodes: " << Netgen_NbOfNodesNew - Netgen_NbOfNodes <<
390 ", nb tetra: " << Netgen_NbOfTetra);
392 // -------------------------------------------------------------------
393 // Feed back the SMESHDS with the generated Nodes and Volume Elements
394 // -------------------------------------------------------------------
396 bool isOK = ( /*status == NG_OK &&*/ Netgen_NbOfTetra > 0 );// get whatever built
399 // vector of nodes in which node index == netgen ID
400 vector< const SMDS_MeshNode* > nodeVec ( Netgen_NbOfNodesNew + 1 );
401 // insert old nodes into nodeVec
402 for ( n_id = nodeToNetgenID.begin(); n_id != nodeToNetgenID.end(); ++n_id ) {
403 nodeVec.at( n_id->second ) = n_id->first;
405 // create and insert new nodes into nodeVec
406 int nodeIndex = Netgen_NbOfNodes + 1;
407 int shapeID = meshDS->ShapeToIndex( aShape );
408 for ( ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
410 Ng_GetPoint( Netgen_mesh, nodeIndex, Netgen_point );
411 SMDS_MeshNode * node = meshDS->AddNode(Netgen_point[0],
414 meshDS->SetNodeInVolume(node, shapeID);
415 nodeVec.at(nodeIndex) = node;
418 // create tetrahedrons
419 for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTetra; ++elemIndex )
421 Ng_GetVolumeElement(Netgen_mesh, elemIndex, Netgen_tetrahedron);
422 SMDS_MeshVolume * elt = myTool->AddVolume (nodeVec.at( Netgen_tetrahedron[0] ),
423 nodeVec.at( Netgen_tetrahedron[1] ),
424 nodeVec.at( Netgen_tetrahedron[2] ),
425 nodeVec.at( Netgen_tetrahedron[3] ));
426 meshDS->SetMeshElementOnShape(elt, shapeID );
430 Ng_DeleteMesh(Netgen_mesh);
433 NETGENPlugin_Mesher::RemoveTmpFiles();
435 return (status == NG_OK);
438 bool NETGENPlugin_NETGEN_3D::Compute(SMESH_Mesh& aMesh,
439 SMESH_MesherHelper* aHelper)
441 MESSAGE("NETGENPlugin_NETGEN_3D::Compute with maxElmentsize = " << _maxElementVolume);
442 const int invalid_ID = -1;
443 bool _quadraticMesh = false;
444 typedef map< const SMDS_MeshNode*, int, TIDCompare > TNodeToIDMap;
445 TNodeToIDMap nodeToNetgenID;
446 list< const SMDS_MeshElement* > triangles;
447 SMESHDS_Mesh* MeshDS = aHelper->GetMeshDS();
449 SMESH_MesherHelper::MType MeshType = aHelper->IsQuadraticMesh();
451 if(MeshType == SMESH_MesherHelper::COMP)
452 return error( COMPERR_BAD_INPUT_MESH,
453 SMESH_Comment("Mesh with linear and quadratic elements given."));
454 else if (MeshType == SMESH_MesherHelper::QUADRATIC)
455 _quadraticMesh = true;
457 StdMeshers_QuadToTriaAdaptor Adaptor;
458 Adaptor.Compute(aMesh);
460 SMDS_FaceIteratorPtr fIt = MeshDS->facesIterator();
461 TIDSortedElemSet sortedFaces; // 0020279: control the "random" use when using mesh algorithms
462 while( fIt->more()) sortedFaces.insert( fIt->next() );
464 TIDSortedElemSet::iterator itFace = sortedFaces.begin(), fEnd = sortedFaces.end();
465 for ( ; itFace != fEnd; ++itFace ) {
467 const SMDS_MeshElement* elem = *itFace;
469 return error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
470 bool isTraingle = ( elem->NbNodes()==3 || (_quadraticMesh && elem->NbNodes()==6 ));
473 const list<const SMDS_FaceOfNodes*>* faces = Adaptor.GetTriangles(elem);
475 continue; // Issue 0020682. There already can be 3d mesh
477 list<const SMDS_FaceOfNodes*>::const_iterator itf = faces->begin();
478 for(; itf!=faces->end(); itf++ ) {
479 triangles.push_back( (*itf) );
480 // put triange's nodes to nodeToNetgenID map
481 SMDS_ElemIteratorPtr triangleNodesIt = (*itf)->nodesIterator();
482 while ( triangleNodesIt->more() ) {
483 const SMDS_MeshNode * node =
484 static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
485 if(aHelper->IsMedium(node))
487 nodeToNetgenID.insert( make_pair( node, invalid_ID ));
493 triangles.push_back( elem );
494 // put elem nodes to nodeToNetgenID map
495 SMDS_ElemIteratorPtr triangleNodesIt = elem->nodesIterator();
496 while ( triangleNodesIt->more() ) {
497 const SMDS_MeshNode * node =
498 static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
499 if(aHelper->IsMedium(node))
501 nodeToNetgenID.insert( make_pair( node, invalid_ID ));
506 // ---------------------------------
507 // Feed the Netgen with surface mesh
508 // ---------------------------------
510 int Netgen_NbOfNodes = 0;
511 int Netgen_param2ndOrder = 0;
512 double Netgen_paramFine = 1.;
513 double Netgen_paramSize = pow( 72, 1/6. ) * pow( _maxElementVolume, 1/3. );
515 double Netgen_point[3];
516 int Netgen_triangle[3];
517 int Netgen_tetrahedron[4];
521 Ng_Mesh * Netgen_mesh = Ng_NewMesh();
523 // set nodes and remember thier netgen IDs
525 TNodeToIDMap::iterator n_id = nodeToNetgenID.begin();
526 for ( ; n_id != nodeToNetgenID.end(); ++n_id )
528 const SMDS_MeshNode* node = n_id->first;
530 Netgen_point [ 0 ] = node->X();
531 Netgen_point [ 1 ] = node->Y();
532 Netgen_point [ 2 ] = node->Z();
533 Ng_AddPoint(Netgen_mesh, Netgen_point);
534 n_id->second = ++Netgen_NbOfNodes; // set netgen ID
538 list< const SMDS_MeshElement* >::iterator tria = triangles.begin();
539 for ( ; tria != triangles.end(); ++tria)
542 SMDS_ElemIteratorPtr triangleNodesIt = (*tria)->nodesIterator();
543 while ( triangleNodesIt->more() ) {
544 const SMDS_MeshNode * node =
545 static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
546 if(aHelper->IsMedium(node))
548 Netgen_triangle[ i ] = nodeToNetgenID[ node ];
551 Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
554 // -------------------------
555 // Generate the volume mesh
556 // -------------------------
558 Ng_Meshing_Parameters Netgen_param;
560 Netgen_param.secondorder = Netgen_param2ndOrder;
561 Netgen_param.fineness = Netgen_paramFine;
562 Netgen_param.maxh = Netgen_paramSize;
567 #if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
570 status = Ng_GenerateVolumeMesh(Netgen_mesh, &Netgen_param);
572 catch (Standard_Failure& exc) {
573 error(COMPERR_OCC_EXCEPTION, exc.GetMessageString());
574 status = NG_VOLUME_FAILURE;
577 error("Bad mesh input!!!");
578 status = NG_VOLUME_FAILURE;
580 if ( GetComputeError()->IsOK() ) {
581 error( status, "Bad mesh input!!!");
584 int Netgen_NbOfNodesNew = Ng_GetNP(Netgen_mesh);
586 int Netgen_NbOfTetra = Ng_GetNE(Netgen_mesh);
588 MESSAGE("End of Volume Mesh Generation. status=" << status <<
589 ", nb new nodes: " << Netgen_NbOfNodesNew - Netgen_NbOfNodes <<
590 ", nb tetra: " << Netgen_NbOfTetra);
592 // -------------------------------------------------------------------
593 // Feed back the SMESHDS with the generated Nodes and Volume Elements
594 // -------------------------------------------------------------------
596 bool isOK = ( Netgen_NbOfTetra > 0 );// get whatever built
599 // vector of nodes in which node index == netgen ID
600 vector< const SMDS_MeshNode* > nodeVec ( Netgen_NbOfNodesNew + 1 );
601 // insert old nodes into nodeVec
602 for ( n_id = nodeToNetgenID.begin(); n_id != nodeToNetgenID.end(); ++n_id ) {
603 nodeVec.at( n_id->second ) = n_id->first;
605 // create and insert new nodes into nodeVec
606 int nodeIndex = Netgen_NbOfNodes + 1;
608 for ( ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
610 Ng_GetPoint( Netgen_mesh, nodeIndex, Netgen_point );
611 SMDS_MeshNode * node = aHelper->AddNode(Netgen_point[0],
614 nodeVec.at(nodeIndex) = node;
617 // create tetrahedrons
618 for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTetra; ++elemIndex )
620 Ng_GetVolumeElement(Netgen_mesh, elemIndex, Netgen_tetrahedron);
621 aHelper->AddVolume (nodeVec.at( Netgen_tetrahedron[0] ),
622 nodeVec.at( Netgen_tetrahedron[1] ),
623 nodeVec.at( Netgen_tetrahedron[2] ),
624 nodeVec.at( Netgen_tetrahedron[3] ));
628 Ng_DeleteMesh(Netgen_mesh);
631 NETGENPlugin_Mesher::RemoveTmpFiles();
633 return (status == NG_OK);
637 //=============================================================================
641 //=============================================================================
643 bool NETGENPlugin_NETGEN_3D::Evaluate(SMESH_Mesh& aMesh,
644 const TopoDS_Shape& aShape,
645 MapShapeNbElems& aResMap)
647 int nbtri = 0, nbqua = 0;
648 double fullArea = 0.0;
649 for (TopExp_Explorer exp(aShape, TopAbs_FACE); exp.More(); exp.Next()) {
650 TopoDS_Face F = TopoDS::Face( exp.Current() );
651 SMESH_subMesh *sm = aMesh.GetSubMesh(F);
652 MapShapeNbElemsItr anIt = aResMap.find(sm);
653 if( anIt==aResMap.end() ) {
654 SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
655 smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated",this));
658 std::vector<int> aVec = (*anIt).second;
659 nbtri += Max(aVec[SMDSEntity_Triangle],aVec[SMDSEntity_Quad_Triangle]);
660 nbqua += Max(aVec[SMDSEntity_Quadrangle],aVec[SMDSEntity_Quad_Quadrangle]);
662 BRepGProp::SurfaceProperties(F,G);
663 double anArea = G.Mass();
667 // collect info from edges
668 int nb0d_e = 0, nb1d_e = 0;
669 bool IsQuadratic = false;
671 TopTools_MapOfShape tmpMap;
672 for (TopExp_Explorer exp(aShape, TopAbs_EDGE); exp.More(); exp.Next()) {
673 TopoDS_Edge E = TopoDS::Edge(exp.Current());
674 if( tmpMap.Contains(E) )
677 SMESH_subMesh *aSubMesh = aMesh.GetSubMesh(exp.Current());
678 MapShapeNbElemsItr anIt = aResMap.find(aSubMesh);
679 if( anIt==aResMap.end() ) {
680 SMESH_ComputeErrorPtr& smError = aSubMesh->GetComputeError();
681 smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,
682 "Submesh can not be evaluated",this));
685 std::vector<int> aVec = (*anIt).second;
686 nb0d_e += aVec[SMDSEntity_Node];
687 nb1d_e += Max(aVec[SMDSEntity_Edge],aVec[SMDSEntity_Quad_Edge]);
689 IsQuadratic = (aVec[SMDSEntity_Quad_Edge] > aVec[SMDSEntity_Edge]);
695 double ELen_face = sqrt(2.* ( fullArea/(nbtri+nbqua*2) ) / sqrt(3.0) );
696 double ELen_vol = pow( 72, 1/6. ) * pow( _maxElementVolume, 1/3. );
697 double ELen = Min(ELen_vol,ELen_face*2);
700 BRepGProp::VolumeProperties(aShape,G);
701 double aVolume = G.Mass();
702 double tetrVol = 0.1179*ELen*ELen*ELen;
703 double CoeffQuality = 0.9;
704 int nbVols = int( aVolume/tetrVol/CoeffQuality );
705 int nb1d_f = (nbtri*3 + nbqua*4 - nb1d_e) / 2;
706 int nb1d_in = (nbVols*6 - nb1d_e - nb1d_f ) / 5;
707 std::vector<int> aVec(SMDSEntity_Last);
708 for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aVec[i]=0;
710 aVec[SMDSEntity_Node] = nb1d_in/6 + 1 + nb1d_in;
711 aVec[SMDSEntity_Quad_Tetra] = nbVols - nbqua*2;
712 aVec[SMDSEntity_Quad_Pyramid] = nbqua;
715 aVec[SMDSEntity_Node] = nb1d_in/6 + 1;
716 aVec[SMDSEntity_Tetra] = nbVols - nbqua*2;
717 aVec[SMDSEntity_Pyramid] = nbqua;
719 SMESH_subMesh *sm = aMesh.GetSubMesh(aShape);
720 aResMap.insert(std::make_pair(sm,aVec));