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 // SMESH SMESH : implementaion of SMESH idl descriptions
23 // File : StdMeshers_Projection_2D.cxx
25 // Created : Fri Oct 20 11:37:07 2006
26 // Author : Edward AGAPOV (eap)
28 #include "StdMeshers_Projection_2D.hxx"
30 #include "StdMeshers_ProjectionSource2D.hxx"
31 #include "StdMeshers_ProjectionUtils.hxx"
33 #include "SMESHDS_Hypothesis.hxx"
34 #include "SMESHDS_SubMesh.hxx"
35 #include "SMESH_Block.hxx"
36 #include "SMESH_Gen.hxx"
37 #include "SMESH_Mesh.hxx"
38 #include "SMESH_MeshEditor.hxx"
39 #include "SMESH_Pattern.hxx"
40 #include "SMESH_subMesh.hxx"
41 #include "SMESH_subMeshEventListener.hxx"
42 #include "SMESH_Comment.hxx"
43 #include "SMDS_EdgePosition.hxx"
45 #include "utilities.h"
47 #include <BRep_Tool.hxx>
48 #include <Bnd_B2d.hxx>
50 #include <TopExp_Explorer.hxx>
51 #include <TopTools_ListIteratorOfListOfShape.hxx>
57 #define RETURN_BAD_RESULT(msg) { MESSAGE(")-: Error: " << msg); return false; }
59 typedef StdMeshers_ProjectionUtils TAssocTool;
61 //=======================================================================
62 //function : StdMeshers_Projection_2D
64 //=======================================================================
66 StdMeshers_Projection_2D::StdMeshers_Projection_2D(int hypId, int studyId, SMESH_Gen* gen)
67 :SMESH_2D_Algo(hypId, studyId, gen)
69 _name = "Projection_2D";
70 _shapeType = (1 << TopAbs_FACE); // 1 bit per shape type
72 _compatibleHypothesis.push_back("ProjectionSource2D");
76 //================================================================================
80 //================================================================================
82 StdMeshers_Projection_2D::~StdMeshers_Projection_2D()
85 //=======================================================================
86 //function : CheckHypothesis
88 //=======================================================================
90 bool StdMeshers_Projection_2D::CheckHypothesis(SMESH_Mesh& theMesh,
91 const TopoDS_Shape& theShape,
92 SMESH_Hypothesis::Hypothesis_Status& theStatus)
94 list <const SMESHDS_Hypothesis * >::const_iterator itl;
96 const list <const SMESHDS_Hypothesis * >&hyps = GetUsedHypothesis(theMesh, theShape);
97 if ( hyps.size() == 0 )
99 theStatus = HYP_MISSING;
100 return false; // can't work with no hypothesis
103 if ( hyps.size() > 1 )
105 theStatus = HYP_ALREADY_EXIST;
109 const SMESHDS_Hypothesis *theHyp = hyps.front();
111 string hypName = theHyp->GetName();
115 if (hypName == "ProjectionSource2D")
117 _sourceHypo = static_cast<const StdMeshers_ProjectionSource2D *>(theHyp);
119 // Check hypo parameters
121 SMESH_Mesh* srcMesh = _sourceHypo->GetSourceMesh();
122 SMESH_Mesh* tgtMesh = & theMesh;
127 if ( _sourceHypo->HasVertexAssociation() )
130 TopoDS_Shape edge = TAssocTool::GetEdgeByVertices
131 ( srcMesh, _sourceHypo->GetSourceVertex(1), _sourceHypo->GetSourceVertex(2) );
132 if ( edge.IsNull() ||
133 !TAssocTool::IsSubShape( edge, srcMesh ) ||
134 !TAssocTool::IsSubShape( edge, _sourceHypo->GetSourceFace() ))
136 theStatus = HYP_BAD_PARAMETER;
137 SCRUTE((edge.IsNull()));
138 SCRUTE((TAssocTool::IsSubShape( edge, srcMesh )));
139 SCRUTE((TAssocTool::IsSubShape( edge, _sourceHypo->GetSourceFace() )));
144 edge = TAssocTool::GetEdgeByVertices
145 ( tgtMesh, _sourceHypo->GetTargetVertex(1), _sourceHypo->GetTargetVertex(2) );
146 if ( edge.IsNull() || !TAssocTool::IsSubShape( edge, tgtMesh ))
148 theStatus = HYP_BAD_PARAMETER;
149 SCRUTE((edge.IsNull()));
150 SCRUTE((TAssocTool::IsSubShape( edge, tgtMesh )));
153 else if ( !_sourceHypo->IsCompoundSource() &&
154 !TAssocTool::IsSubShape( edge, theShape ))
156 theStatus = HYP_BAD_PARAMETER;
157 SCRUTE((TAssocTool::IsSubShape( edge, theShape )));
161 // check a source face
162 if ( !TAssocTool::IsSubShape( _sourceHypo->GetSourceFace(), srcMesh ) ||
163 ( srcMesh == tgtMesh && theShape == _sourceHypo->GetSourceFace() ))
165 theStatus = HYP_BAD_PARAMETER;
166 SCRUTE((TAssocTool::IsSubShape( _sourceHypo->GetSourceFace(), srcMesh )));
167 SCRUTE((srcMesh == tgtMesh));
168 SCRUTE(( theShape == _sourceHypo->GetSourceFace() ));
173 theStatus = HYP_INCOMPATIBLE;
175 return ( theStatus == HYP_OK );
181 //================================================================================
183 * \brief define if a node is new or old
184 * \param node - node to check
185 * \retval bool - true if the node existed before Compute() is called
187 //================================================================================
189 bool isOldNode( const SMDS_MeshNode* node )
191 // old nodes are shared by edges and new ones are shared
192 // only by faces created by mapper
193 SMDS_ElemIteratorPtr invEdge = node->GetInverseElementIterator(SMDSAbs_Edge);
194 bool isOld = invEdge->more();
198 //================================================================================
200 * \brief Class to remove mesh built by pattern mapper on edges
201 * and vertices in the case of failure of projection algo.
202 * It does it's job at destruction
204 //================================================================================
209 MeshCleaner( SMESH_subMesh* faceSubMesh ): sm(faceSubMesh) {}
210 ~MeshCleaner() { Clean(sm); }
211 void Release() { sm = 0; } // mesh will not be removed
212 static void Clean( SMESH_subMesh* sm, bool withSub=true )
215 // PAL16567, 18920. Remove face nodes as well
216 // switch ( sm->GetSubShape().ShapeType() ) {
217 // case TopAbs_VERTEX:
218 // case TopAbs_EDGE: {
219 SMDS_NodeIteratorPtr nIt = sm->GetSubMeshDS()->GetNodes();
220 SMESHDS_Mesh* mesh = sm->GetFather()->GetMeshDS();
221 while ( nIt->more() ) {
222 const SMDS_MeshNode* node = nIt->next();
223 if ( !isOldNode( node ) )
224 mesh->RemoveNode( node );
226 // do not break but iterate over DependsOn()
229 if ( !withSub ) return;
230 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(false,false);
231 while ( smIt->more() )
232 Clean( smIt->next(), false );
237 //================================================================================
239 * \brief find new nodes belonging to one free border of mesh on face
240 * \param sm - submesh on edge or vertex containg nodes to choose from
241 * \param face - the face bound the submesh
242 * \param u2nodes - map to fill with nodes
243 * \param seamNodes - set of found nodes
244 * \retval bool - is a success
246 //================================================================================
248 bool getBoundaryNodes ( SMESH_subMesh* sm,
249 const TopoDS_Face& face,
250 map< double, const SMDS_MeshNode* > & u2nodes,
251 set< const SMDS_MeshNode* > & seamNodes)
255 if ( !sm || !sm->GetSubMeshDS() )
256 RETURN_BAD_RESULT("Null submesh");
258 SMDS_NodeIteratorPtr nIt = sm->GetSubMeshDS()->GetNodes();
259 switch ( sm->GetSubShape().ShapeType() ) {
261 case TopAbs_VERTEX: {
262 while ( nIt->more() ) {
263 const SMDS_MeshNode* node = nIt->next();
264 if ( isOldNode( node ) ) continue;
265 u2nodes.insert( make_pair( 0., node ));
266 seamNodes.insert( node );
273 // Get submeshes of sub-vertices
274 const map< int, SMESH_subMesh * >& subSM = sm->DependsOn();
275 if ( subSM.size() != 2 )
276 RETURN_BAD_RESULT("there must be 2 submeshes of sub-vertices"
277 " but we have " << subSM.size());
278 SMESH_subMesh* smV1 = subSM.begin()->second;
279 SMESH_subMesh* smV2 = subSM.rbegin()->second;
280 if ( !smV1->IsMeshComputed() || !smV2->IsMeshComputed() )
281 RETURN_BAD_RESULT("Empty vertex submeshes");
283 // Look for a new node on V1
284 nIt = smV1->GetSubMeshDS()->GetNodes();
285 const SMDS_MeshNode* nV1 = 0;
286 while ( nIt->more() && !nV1 ) {
287 const SMDS_MeshNode* node = nIt->next();
288 if ( !isOldNode( node ) ) nV1 = node;
291 RETURN_BAD_RESULT("No new node found on V1");
293 // Find a new node connected to nV1 and belonging to edge submesh;
294 const SMDS_MeshNode* nE = 0;
295 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
296 SMDS_ElemIteratorPtr vElems = nV1->GetInverseElementIterator(SMDSAbs_Face);
297 while ( vElems->more() && !nE ) {
298 const SMDS_MeshElement* elem = vElems->next();
299 int nbNodes = elem->NbNodes();
300 if ( elem->IsQuadratic() )
302 int iV1 = elem->GetNodeIndex( nV1 );
303 // try next after nV1
304 int iE = SMESH_MesherHelper::WrapIndex( iV1 + 1, nbNodes );
305 if ( smDS->Contains( elem->GetNode( iE ) ))
306 nE = elem->GetNode( iE );
308 // try node before nV1
309 iE = SMESH_MesherHelper::WrapIndex( iV1 - 1, nbNodes );
310 if ( smDS->Contains( elem->GetNode( iE )))
311 nE = elem->GetNode( iE );
313 if ( nE && elem->IsQuadratic() ) { // find medium node between nV1 and nE
314 if ( Abs( iV1 - iE ) == 1 )
315 nE = elem->GetNode( Min ( iV1, iE ) + nbNodes );
317 nE = elem->GetNode( elem->NbNodes() - 1 );
321 RETURN_BAD_RESULT("new node on edge not found");
323 // Get the whole free border of a face
324 list< const SMDS_MeshNode* > bordNodes;
325 list< const SMDS_MeshElement* > bordFaces;
326 if ( !SMESH_MeshEditor::FindFreeBorder (nV1, nE, nV1, bordNodes, bordFaces ))
327 RETURN_BAD_RESULT("free border of a face not found by nodes " <<
328 nV1->GetID() << " " << nE->GetID() );
330 // Insert nodes of the free border to the map until node on V2 encountered
331 SMESHDS_SubMesh* v2smDS = smV2->GetSubMeshDS();
332 list< const SMDS_MeshNode* >::iterator bordIt = bordNodes.begin();
333 bordIt++; // skip nV1
334 for ( ; bordIt != bordNodes.end(); ++bordIt ) {
335 const SMDS_MeshNode* node = *bordIt;
336 if ( v2smDS->Contains( node ))
338 if ( node->GetPosition()->GetTypeOfPosition() != SMDS_TOP_EDGE )
339 RETURN_BAD_RESULT("Bad node position type: node " << node->GetID() <<
340 " pos type " << node->GetPosition()->GetTypeOfPosition());
341 const SMDS_EdgePosition* pos =
342 static_cast<const SMDS_EdgePosition*>(node->GetPosition().get());
343 u2nodes.insert( make_pair( pos->GetUParameter(), node ));
344 seamNodes.insert( node );
346 if ( u2nodes.size() != seamNodes.size() )
347 RETURN_BAD_RESULT("Bad node params on edge " << sm->GetId() <<
348 ", " << u2nodes.size() << " != " << seamNodes.size() );
353 RETURN_BAD_RESULT ("Unexpected submesh type");
355 } // bool getBoundaryNodes()
359 //=======================================================================
362 //=======================================================================
364 bool StdMeshers_Projection_2D::Compute(SMESH_Mesh& theMesh, const TopoDS_Shape& theShape)
369 SMESH_Mesh * srcMesh = _sourceHypo->GetSourceMesh();
370 SMESH_Mesh * tgtMesh = & theMesh;
374 SMESHDS_Mesh * meshDS = theMesh.GetMeshDS();
376 // ---------------------------
377 // Make subshapes association
378 // ---------------------------
380 TopoDS_Face tgtFace = TopoDS::Face( theShape.Oriented(TopAbs_FORWARD));
381 TopoDS_Shape srcShape = _sourceHypo->GetSourceFace().Oriented(TopAbs_FORWARD);
383 TAssocTool::TShapeShapeMap shape2ShapeMap;
384 TAssocTool::InitVertexAssociation( _sourceHypo, shape2ShapeMap, tgtFace );
385 if ( !TAssocTool::FindSubShapeAssociation( tgtFace, tgtMesh, srcShape, srcMesh,
387 !shape2ShapeMap.IsBound( tgtFace ))
388 return error(COMPERR_BAD_SHAPE,"Topology of source and target faces seems different" );
390 TopoDS_Face srcFace = TopoDS::Face( shape2ShapeMap( tgtFace ).Oriented(TopAbs_FORWARD));
392 // ----------------------------------------------
393 // Assure that mesh on a source Face is computed
394 // ----------------------------------------------
396 SMESH_subMesh* srcSubMesh = srcMesh->GetSubMesh( srcFace );
397 SMESH_subMesh* tgtSubMesh = tgtMesh->GetSubMesh( tgtFace );
399 if ( tgtMesh == srcMesh ) {
400 if ( !TAssocTool::MakeComputed( srcSubMesh ))
401 return error(COMPERR_BAD_INPUT_MESH,"Source mesh not computed");
404 if ( !srcSubMesh->IsMeshComputed() )
405 return error(COMPERR_BAD_INPUT_MESH,"Source mesh not computed");
408 // --------------------
409 // Prepare to mapping
410 // --------------------
412 SMESH_MesherHelper helper( theMesh );
413 helper.SetSubShape( tgtFace );
415 // Check if node projection to a face is needed
417 SMDS_ElemIteratorPtr faceIt = srcSubMesh->GetSubMeshDS()->GetElements();
419 for ( ; nbFaceNodes < 3 && faceIt->more(); ) {
420 const SMDS_MeshElement* face = faceIt->next();
421 SMDS_ElemIteratorPtr nodeIt = face->nodesIterator();
422 while ( nodeIt->more() ) {
423 const SMDS_MeshNode* node = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
424 if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE ) {
426 uvBox.Add( helper.GetNodeUV( srcFace, node ));
430 const bool toProjectNodes =
431 ( nbFaceNodes > 0 && ( uvBox.IsVoid() || uvBox.SquareExtent() < DBL_MIN ));
433 // Load pattern from the source face
434 SMESH_Pattern mapper;
435 mapper.Load( srcMesh, srcFace, toProjectNodes );
436 if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
437 return error(COMPERR_BAD_INPUT_MESH,"Can't load mesh pattern from the source face");
439 // Find the first target vertex corresponding to first vertex of the <mapper>
440 // and <theReverse> flag needed to call mapper.Apply()
442 TopoDS_Vertex srcV1 = TopoDS::Vertex( mapper.GetSubShape( 1 ));
443 if ( srcV1.IsNull() )
444 RETURN_BAD_RESULT("Mesh is not bound to the face");
445 if ( !shape2ShapeMap.IsBound( srcV1 ))
446 RETURN_BAD_RESULT("Not associated vertices, srcV1 " << srcV1.TShape().operator->() );
447 TopoDS_Vertex tgtV1 = TopoDS::Vertex( shape2ShapeMap( srcV1 ));
449 if ( !TAssocTool::IsSubShape( srcV1, srcFace ))
450 RETURN_BAD_RESULT("Wrong srcV1 " << srcV1.TShape().operator->());
451 if ( !TAssocTool::IsSubShape( tgtV1, tgtFace ))
452 RETURN_BAD_RESULT("Wrong tgtV1 " << tgtV1.TShape().operator->());
454 // try to find out orientation by order of edges
455 bool reverse = false;
456 list< TopoDS_Edge > tgtEdges, srcEdges;
457 list< int > nbEdgesInWires;
458 SMESH_Block::GetOrderedEdges( tgtFace, tgtV1, tgtEdges, nbEdgesInWires);
459 SMESH_Block::GetOrderedEdges( srcFace, srcV1, srcEdges, nbEdgesInWires);
460 if ( nbEdgesInWires.front() > 1 ) // possible to find out
462 TopoDS_Edge srcE1 = srcEdges.front(), tgtE1 = tgtEdges.front();
463 TopoDS_Shape srcE1bis = shape2ShapeMap( tgtE1 );
464 reverse = ( ! srcE1.IsSame( srcE1bis ));
466 else if ( nbEdgesInWires.front() == 1 )
468 // TODO::Compare orientation of curves in a sole edge
469 //RETURN_BAD_RESULT("Not implemented case");
473 RETURN_BAD_RESULT("Bad result from SMESH_Block::GetOrderedEdges()");
476 // --------------------
477 // Perform 2D mapping
478 // --------------------
480 // Compute mesh on a target face
482 mapper.Apply( tgtFace, tgtV1, reverse );
483 if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
484 return error("Can't apply source mesh pattern to the face");
488 const bool toCreatePolygons = false, toCreatePolyedrs = false;
489 mapper.MakeMesh( tgtMesh, toCreatePolygons, toCreatePolyedrs );
490 if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
491 return error("Can't make mesh by source mesh pattern");
493 // it will remove mesh built by pattern mapper on edges and vertices
495 MeshCleaner cleaner( tgtSubMesh );
497 // -------------------------------------------------------------------------
498 // mapper doesn't take care of nodes already existing on edges and vertices,
499 // so we must merge nodes created by it with existing ones
500 // -------------------------------------------------------------------------
502 SMESH_MeshEditor editor( tgtMesh );
503 SMESH_MeshEditor::TListOfListOfNodes groupsOfNodes;
505 // Make groups of nodes to merge
507 // loop on edge and vertex submeshes of a target face
508 SMESH_subMeshIteratorPtr smIt = tgtSubMesh->getDependsOnIterator(false,false);
509 while ( smIt->more() )
511 SMESH_subMesh* sm = smIt->next();
512 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
514 // Sort new and old nodes of a submesh separately
516 bool isSeam = helper.IsRealSeam( sm->GetId() );
518 enum { NEW_NODES = 0, OLD_NODES };
519 map< double, const SMDS_MeshNode* > u2nodesMaps[2], u2nodesOnSeam;
520 map< double, const SMDS_MeshNode* >::iterator u_oldNode, u_newNode, u_newOnSeam, newEnd;
521 set< const SMDS_MeshNode* > seamNodes;
523 // mapper puts on a seam edge nodes from 2 edges
524 if ( isSeam && ! getBoundaryNodes ( sm, tgtFace, u2nodesOnSeam, seamNodes ))
525 RETURN_BAD_RESULT("getBoundaryNodes() failed");
527 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
528 while ( nIt->more() )
530 const SMDS_MeshNode* node = nIt->next();
531 bool isOld = isOldNode( node );
533 if ( !isOld && isSeam ) { // new node on a seam edge
534 if ( seamNodes.find( node ) != seamNodes.end())
535 continue; // node is already in the map
538 // sort nodes on edges by their position
539 map< double, const SMDS_MeshNode* > & pos2nodes = u2nodesMaps[isOld ? OLD_NODES : NEW_NODES];
540 switch ( node->GetPosition()->GetTypeOfPosition() )
542 case SMDS_TOP_VERTEX: {
543 pos2nodes.insert( make_pair( 0, node ));
546 case SMDS_TOP_EDGE: {
547 const SMDS_EdgePosition* pos =
548 static_cast<const SMDS_EdgePosition*>(node->GetPosition().get());
549 pos2nodes.insert( make_pair( pos->GetUParameter(), node ));
553 RETURN_BAD_RESULT("Wrong node position type: "<<
554 node->GetPosition()->GetTypeOfPosition());
557 if ( u2nodesMaps[ NEW_NODES ].size() != u2nodesMaps[ OLD_NODES ].size() )
559 if ( u2nodesMaps[ NEW_NODES ].size() == 0 &&
560 sm->GetSubShape().ShapeType() == TopAbs_EDGE &&
561 helper.IsDegenShape( sm->GetId() ) )
562 // NPAL15894 (tt88bis.py) - project mesh built by NETGEN_1d_2D that
563 // does not make segments/nodes on degenerated edges
566 RETURN_BAD_RESULT("Different nb of old and new nodes on shape #"<< sm->GetId() <<" "<<
567 u2nodesMaps[ OLD_NODES ].size() << " != " <<
568 u2nodesMaps[ NEW_NODES ].size());
570 if ( isSeam && u2nodesMaps[ OLD_NODES ].size() != u2nodesOnSeam.size() ) {
571 RETURN_BAD_RESULT("Different nb of old and seam nodes " <<
572 u2nodesMaps[ OLD_NODES ].size() << " != " << u2nodesOnSeam.size());
574 // Make groups of nodes to merge
575 u_oldNode = u2nodesMaps[ OLD_NODES ].begin();
576 u_newNode = u2nodesMaps[ NEW_NODES ].begin();
577 newEnd = u2nodesMaps[ NEW_NODES ].end();
578 u_newOnSeam = u2nodesOnSeam.begin();
579 for ( ; u_newNode != newEnd; ++u_newNode, ++u_oldNode ) {
580 groupsOfNodes.push_back( list< const SMDS_MeshNode* >() );
581 groupsOfNodes.back().push_back( u_oldNode->second );
582 groupsOfNodes.back().push_back( u_newNode->second );
584 groupsOfNodes.back().push_back( (u_newOnSeam++)->second );
590 int nbFaceBeforeMerge = tgtSubMesh->GetSubMeshDS()->NbElements();
591 editor.MergeNodes( groupsOfNodes );
592 int nbFaceAtferMerge = tgtSubMesh->GetSubMeshDS()->NbElements();
593 if ( nbFaceBeforeMerge != nbFaceAtferMerge )
594 return error(COMPERR_BAD_INPUT_MESH, "Probably invalid node parameters on geom faces");
596 // ---------------------------
597 // Check elements orientation
598 // ---------------------------
600 TopoDS_Face face = tgtFace;
601 if ( !theMesh.IsMainShape( tgtFace ))
603 // find the main shape
604 TopoDS_Shape mainShape = meshDS->ShapeToMesh();
605 switch ( mainShape.ShapeType() ) {
607 case TopAbs_SOLID: break;
609 TopTools_ListIteratorOfListOfShape ancestIt = theMesh.GetAncestors( face );
610 for ( ; ancestIt.More(); ancestIt.Next() ) {
611 TopAbs_ShapeEnum type = ancestIt.Value().ShapeType();
612 if ( type == TopAbs_SOLID ) {
613 mainShape = ancestIt.Value();
615 } else if ( type == TopAbs_SHELL ) {
616 mainShape = ancestIt.Value();
620 // find tgtFace in the main solid or shell to know it's true orientation.
621 TopExp_Explorer exp( mainShape, TopAbs_FACE );
622 for ( ; exp.More(); exp.Next() ) {
623 if ( tgtFace.IsSame( exp.Current() )) {
624 face = TopoDS::Face( exp.Current() );
630 if ( SMESH_Algo::IsReversedSubMesh( face, meshDS ))
632 SMDS_ElemIteratorPtr eIt = meshDS->MeshElements( face )->GetElements();
633 while ( eIt->more() ) {
634 const SMDS_MeshElement* e = eIt->next();
635 if ( e->GetType() == SMDSAbs_Face && !editor.Reorient( e ))
636 RETURN_BAD_RESULT("Pb of SMESH_MeshEditor::Reorient()");
640 cleaner.Release(); // do not remove mesh
645 //=============================================================================
647 * \brief Sets a default event listener to submesh of the source face
648 * \param subMesh - submesh where algo is set
650 * This method is called when a submesh gets HYP_OK algo_state.
651 * After being set, event listener is notified on each event of a submesh.
652 * Arranges that CLEAN event is translated from source submesh to
655 //=============================================================================
657 void StdMeshers_Projection_2D::SetEventListener(SMESH_subMesh* subMesh)
659 TAssocTool::SetEventListener( subMesh,
660 _sourceHypo->GetSourceFace(),
661 _sourceHypo->GetSourceMesh() );