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 // SMESH SMESH : implementaion of SMESH idl descriptions
24 // File : StdMeshers_Projection_2D.cxx
26 // Created : Fri Oct 20 11:37:07 2006
27 // Author : Edward AGAPOV (eap)
29 #include "StdMeshers_Projection_2D.hxx"
31 #include "StdMeshers_ProjectionSource2D.hxx"
32 #include "StdMeshers_ProjectionUtils.hxx"
33 #include "StdMeshers_FaceSide.hxx"
35 #include "SMDS_EdgePosition.hxx"
36 #include "SMDS_FacePosition.hxx"
37 #include "SMESHDS_Hypothesis.hxx"
38 #include "SMESHDS_SubMesh.hxx"
39 #include "SMESH_Block.hxx"
40 #include "SMESH_Comment.hxx"
41 #include "SMESH_Gen.hxx"
42 #include "SMESH_Mesh.hxx"
43 #include "SMESH_MesherHelper.hxx"
44 #include "SMESH_Pattern.hxx"
45 #include "SMESH_subMesh.hxx"
46 #include "SMESH_subMeshEventListener.hxx"
48 #include "utilities.h"
50 #include <BRepAdaptor_Surface.hxx>
51 #include <BRep_Tool.hxx>
52 #include <Bnd_B2d.hxx>
53 #include <GeomAPI_ProjectPointOnSurf.hxx>
54 #include <GeomLib_IsPlanarSurface.hxx>
56 #include <TopExp_Explorer.hxx>
57 #include <TopTools_DataMapIteratorOfDataMapOfShapeShape.hxx>
58 #include <TopTools_ListIteratorOfListOfShape.hxx>
59 #include <TopTools_MapOfShape.hxx>
61 #include <TopoDS_Solid.hxx>
64 #include <gp_GTrsf.hxx>
69 #define RETURN_BAD_RESULT(msg) { MESSAGE(")-: Error: " << msg); return false; }
71 namespace TAssocTool = StdMeshers_ProjectionUtils;
72 //typedef StdMeshers_ProjectionUtils TAssocTool;
74 //=======================================================================
75 //function : StdMeshers_Projection_2D
77 //=======================================================================
79 StdMeshers_Projection_2D::StdMeshers_Projection_2D(int hypId, int studyId, SMESH_Gen* gen)
80 :SMESH_2D_Algo(hypId, studyId, gen)
82 _name = "Projection_2D";
83 _compatibleHypothesis.push_back("ProjectionSource2D");
87 //================================================================================
91 //================================================================================
93 StdMeshers_Projection_2D::~StdMeshers_Projection_2D()
96 //=======================================================================
97 //function : CheckHypothesis
99 //=======================================================================
101 bool StdMeshers_Projection_2D::CheckHypothesis(SMESH_Mesh& theMesh,
102 const TopoDS_Shape& theShape,
103 SMESH_Hypothesis::Hypothesis_Status& theStatus)
105 list <const SMESHDS_Hypothesis * >::const_iterator itl;
107 const list <const SMESHDS_Hypothesis * >&hyps = GetUsedHypothesis(theMesh, theShape);
108 if ( hyps.size() == 0 )
110 theStatus = HYP_MISSING;
111 return false; // can't work with no hypothesis
114 if ( hyps.size() > 1 )
116 theStatus = HYP_ALREADY_EXIST;
120 const SMESHDS_Hypothesis *theHyp = hyps.front();
122 string hypName = theHyp->GetName();
126 if (hypName == "ProjectionSource2D")
128 _sourceHypo = static_cast<const StdMeshers_ProjectionSource2D *>(theHyp);
130 // Check hypo parameters
132 SMESH_Mesh* srcMesh = _sourceHypo->GetSourceMesh();
133 SMESH_Mesh* tgtMesh = & theMesh;
138 if ( _sourceHypo->HasVertexAssociation() )
141 TopoDS_Shape edge = TAssocTool::GetEdgeByVertices
142 ( srcMesh, _sourceHypo->GetSourceVertex(1), _sourceHypo->GetSourceVertex(2) );
143 if ( edge.IsNull() ||
144 !SMESH_MesherHelper::IsSubShape( edge, srcMesh ) ||
145 !SMESH_MesherHelper::IsSubShape( edge, _sourceHypo->GetSourceFace() ))
147 theStatus = HYP_BAD_PARAMETER;
148 error("Invalid source vertices");
149 SCRUTE((edge.IsNull()));
150 SCRUTE((SMESH_MesherHelper::IsSubShape( edge, srcMesh )));
151 SCRUTE((SMESH_MesherHelper::IsSubShape( edge, _sourceHypo->GetSourceFace() )));
156 edge = TAssocTool::GetEdgeByVertices
157 ( tgtMesh, _sourceHypo->GetTargetVertex(1), _sourceHypo->GetTargetVertex(2) );
158 if ( edge.IsNull() || !SMESH_MesherHelper::IsSubShape( edge, tgtMesh ))
160 theStatus = HYP_BAD_PARAMETER;
161 error("Invalid target vertices");
162 SCRUTE((edge.IsNull()));
163 SCRUTE((SMESH_MesherHelper::IsSubShape( edge, tgtMesh )));
166 else if ( !_sourceHypo->IsCompoundSource() &&
167 !SMESH_MesherHelper::IsSubShape( edge, theShape ))
169 theStatus = HYP_BAD_PARAMETER;
170 error("Invalid target vertices");
171 SCRUTE((SMESH_MesherHelper::IsSubShape( edge, theShape )));
175 // check a source face
176 if ( !SMESH_MesherHelper::IsSubShape( _sourceHypo->GetSourceFace(), srcMesh ) ||
177 ( srcMesh == tgtMesh && theShape == _sourceHypo->GetSourceFace() ))
179 theStatus = HYP_BAD_PARAMETER;
180 error("Invalid source face");
181 SCRUTE((SMESH_MesherHelper::IsSubShape( _sourceHypo->GetSourceFace(), srcMesh )));
182 SCRUTE((srcMesh == tgtMesh));
183 SCRUTE(( theShape == _sourceHypo->GetSourceFace() ));
188 theStatus = HYP_INCOMPATIBLE;
190 return ( theStatus == HYP_OK );
195 //================================================================================
197 * \brief define if a node is new or old
198 * \param node - node to check
199 * \retval bool - true if the node existed before Compute() is called
201 //================================================================================
203 bool isOldNode( const SMDS_MeshNode* node )
205 // old nodes are shared by edges and new ones are shared
206 // only by faces created by mapper
207 //if ( is1DComputed )
209 bool isOld = node->NbInverseElements(SMDSAbs_Edge) > 0;
214 // SMDS_ElemIteratorPtr invFace = node->GetInverseElementIterator(SMDSAbs_Face);
215 // bool isNew = invFace->more();
220 //================================================================================
222 * \brief Class to remove mesh built by pattern mapper on edges
223 * and vertices in the case of failure of projection algo.
224 * It does it's job at destruction
226 //================================================================================
231 MeshCleaner( SMESH_subMesh* faceSubMesh ): sm(faceSubMesh) {}
232 ~MeshCleaner() { Clean(sm); }
233 void Release() { sm = 0; } // mesh will not be removed
234 static void Clean( SMESH_subMesh* sm, bool withSub=true )
236 if ( !sm || !sm->GetSubMeshDS() ) return;
237 // PAL16567, 18920. Remove face nodes as well
238 // switch ( sm->GetSubShape().ShapeType() ) {
239 // case TopAbs_VERTEX:
240 // case TopAbs_EDGE: {
241 SMDS_NodeIteratorPtr nIt = sm->GetSubMeshDS()->GetNodes();
242 SMESHDS_Mesh* mesh = sm->GetFather()->GetMeshDS();
243 while ( nIt->more() ) {
244 const SMDS_MeshNode* node = nIt->next();
245 if ( !isOldNode( node ) )
246 mesh->RemoveNode( node );
248 // do not break but iterate over DependsOn()
251 if ( !withSub ) return;
252 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(false,false);
253 while ( smIt->more() )
254 Clean( smIt->next(), false );
259 //================================================================================
261 * \brief find new nodes belonging to one free border of mesh on face
262 * \param sm - submesh on edge or vertex containg nodes to choose from
263 * \param face - the face bound by the submesh
264 * \param u2nodes - map to fill with nodes
265 * \param seamNodes - set of found nodes
266 * \retval bool - is a success
268 //================================================================================
270 bool getBoundaryNodes ( SMESH_subMesh* sm,
271 const TopoDS_Face& face,
272 map< double, const SMDS_MeshNode* > & u2nodes,
273 set< const SMDS_MeshNode* > & seamNodes)
277 if ( !sm || !sm->GetSubMeshDS() )
278 RETURN_BAD_RESULT("Null submesh");
280 SMDS_NodeIteratorPtr nIt = sm->GetSubMeshDS()->GetNodes();
281 switch ( sm->GetSubShape().ShapeType() ) {
283 case TopAbs_VERTEX: {
284 while ( nIt->more() ) {
285 const SMDS_MeshNode* node = nIt->next();
286 if ( isOldNode( node ) ) continue;
287 u2nodes.insert( make_pair( 0., node ));
288 seamNodes.insert( node );
295 // Get submeshes of sub-vertices
296 const map< int, SMESH_subMesh * >& subSM = sm->DependsOn();
297 if ( subSM.size() != 2 )
298 RETURN_BAD_RESULT("there must be 2 submeshes of sub-vertices"
299 " but we have " << subSM.size());
300 SMESH_subMesh* smV1 = subSM.begin()->second;
301 SMESH_subMesh* smV2 = subSM.rbegin()->second;
302 if ( !smV1->IsMeshComputed() || !smV2->IsMeshComputed() )
303 RETURN_BAD_RESULT("Empty vertex submeshes");
305 const SMDS_MeshNode* nV1 = 0;
306 const SMDS_MeshNode* nE = 0;
308 // Look for nV1 - a new node on V1
309 nIt = smV1->GetSubMeshDS()->GetNodes();
310 while ( nIt->more() && !nE ) {
311 const SMDS_MeshNode* node = nIt->next();
312 if ( isOldNode( node ) ) continue;
315 // Find nE - a new node connected to nV1 and belonging to edge submesh;
316 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
317 SMDS_ElemIteratorPtr vElems = nV1->GetInverseElementIterator(SMDSAbs_Face);
318 while ( vElems->more() && !nE ) {
319 const SMDS_MeshElement* elem = vElems->next();
320 int nbNodes = elem->NbNodes();
321 if ( elem->IsQuadratic() )
323 int iV1 = elem->GetNodeIndex( nV1 );
324 // try next after nV1
325 int iE = SMESH_MesherHelper::WrapIndex( iV1 + 1, nbNodes );
326 if ( smDS->Contains( elem->GetNode( iE ) ))
327 nE = elem->GetNode( iE );
329 // try node before nV1
330 iE = SMESH_MesherHelper::WrapIndex( iV1 - 1, nbNodes );
331 if ( smDS->Contains( elem->GetNode( iE )))
332 nE = elem->GetNode( iE );
334 if ( nE && elem->IsQuadratic() ) { // find medium node between nV1 and nE
335 if ( Abs( iV1 - iE ) == 1 )
336 nE = elem->GetNode( Min ( iV1, iE ) + nbNodes );
338 nE = elem->GetNode( elem->NbNodes() - 1 );
343 RETURN_BAD_RESULT("No new node found on V1");
345 RETURN_BAD_RESULT("new node on edge not found");
347 // Get the whole free border of a face
348 list< const SMDS_MeshNode* > bordNodes;
349 list< const SMDS_MeshElement* > bordFaces;
350 if ( !SMESH_MeshEditor::FindFreeBorder (nV1, nE, nV1, bordNodes, bordFaces ))
351 RETURN_BAD_RESULT("free border of a face not found by nodes " <<
352 nV1->GetID() << " " << nE->GetID() );
354 // Insert nodes of the free border to the map until node on V2 encountered
355 SMESHDS_SubMesh* v2smDS = smV2->GetSubMeshDS();
356 list< const SMDS_MeshNode* >::iterator bordIt = bordNodes.begin();
357 bordIt++; // skip nV1
358 for ( ; bordIt != bordNodes.end(); ++bordIt ) {
359 const SMDS_MeshNode* node = *bordIt;
360 if ( v2smDS->Contains( node ))
362 if ( node->GetPosition()->GetTypeOfPosition() != SMDS_TOP_EDGE )
363 RETURN_BAD_RESULT("Bad node position type: node " << node->GetID() <<
364 " pos type " << node->GetPosition()->GetTypeOfPosition());
365 const SMDS_EdgePosition* pos =
366 static_cast<const SMDS_EdgePosition*>(node->GetPosition());
367 u2nodes.insert( make_pair( pos->GetUParameter(), node ));
368 seamNodes.insert( node );
370 if ( u2nodes.size() != seamNodes.size() )
371 RETURN_BAD_RESULT("Bad node params on edge " << sm->GetId() <<
372 ", " << u2nodes.size() << " != " << seamNodes.size() );
377 RETURN_BAD_RESULT ("Unexpected submesh type");
379 } // bool getBoundaryNodes()
381 //================================================================================
383 * \brief Check if two consecutive EDGEs are connected in 2D
384 * \param [in] E1 - a well oriented non-seam EDGE
385 * \param [in] E2 - a possibly well oriented seam EDGE
386 * \param [in] F - a FACE
387 * \return bool - result
389 //================================================================================
391 bool are2dConnected( const TopoDS_Edge & E1,
392 const TopoDS_Edge & E2,
393 const TopoDS_Face & F )
396 Handle(Geom2d_Curve) c1 = BRep_Tool::CurveOnSurface( E1, F, f, l );
397 gp_Pnt2d uvFirst1 = c1->Value( f );
398 gp_Pnt2d uvLast1 = c1->Value( l );
400 Handle(Geom2d_Curve) c2 = BRep_Tool::CurveOnSurface( E2, F, f, l );
401 gp_Pnt2d uvFirst2 = c2->Value( E2.Orientation() == TopAbs_REVERSED ? l : f );
402 double tol2 = Max( Precision::PConfusion() * Precision::PConfusion(),
403 1e-5 * uvLast1.SquareDistance( uvFirst1 ));
405 return (( uvFirst2.SquareDistance( uvFirst1 ) < tol2 ) ||
406 ( uvFirst2.SquareDistance( uvLast1 ) < tol2 ));
409 //================================================================================
411 * \brief Compose TSideVector for both FACEs keeping matching order of EDGEs
412 * and fill src2tgtNodes map
414 //================================================================================
416 TError getWires(const TopoDS_Face& tgtFace,
417 const TopoDS_Face& srcFace,
418 SMESH_Mesh * tgtMesh,
419 SMESH_Mesh * srcMesh,
420 const TAssocTool::TShapeShapeMap& shape2ShapeMap,
421 TSideVector& srcWires,
422 TSideVector& tgtWires,
423 TAssocTool::TNodeNodeMap& src2tgtNodes,
426 SMESHDS_Mesh* tgtMeshDS = tgtMesh->GetMeshDS();
427 SMESHDS_Mesh* srcMeshDS = srcMesh->GetMeshDS();
429 src2tgtNodes.clear();
431 // get ordered src EDGEs
433 srcWires = StdMeshers_FaceSide::GetFaceWires( srcFace, *srcMesh,/*skipMediumNodes=*/0, err);
434 if ( err && !err->IsOK() || srcWires.empty() )
437 SMESH_MesherHelper srcHelper( *srcMesh );
438 srcHelper.SetSubShape( srcFace );
440 // make corresponding sequence of tgt EDGEs
441 tgtWires.resize( srcWires.size() );
442 for ( size_t iW = 0; iW < srcWires.size(); ++iW )
445 //bool reverse = false;
446 StdMeshers_FaceSidePtr srcWire = srcWires[iW];
447 // for ( int iE = 0; iE < srcWire->NbEdges(); ++iE )
449 // if ( srcHelper.IsRealSeam( srcWire->EdgeID( iE )))
451 // TopoDS_Shape srcE = srcWire->Edge( iE );
452 // TopoDS_Shape tgtE = shape2ShapeMap( srcE, /*isSrc=*/true);
453 // if ( shape2ShapeMap._assocType == TShapeShapeMap::PROPAGATION ||
454 // shape2ShapeMap._assocType == TShapeShapeMap::PROPAGATION)
458 // else if ( tgtMesh == srcMesh )
460 // reverse = (( srcE.Orientation() == srcHelper.GetSubShapeOri( srcFace, srcE )) !=
461 // ( tgtE.Orientation() == srcHelper.GetSubShapeOri( tgtFace, tgtE )));
465 // TopoDS_Shape srcEbis = shape2ShapeMap( tgtE, /*isSrc=*/false );
466 // reverse = ( srcE.Orientation() != srcEbis.Orientation() );
471 list< TopoDS_Edge > tgtEdges;
472 TopTools_IndexedMapOfShape edgeMap; // to detect seam edges
473 for ( int iE = 0; iE < srcWire->NbEdges(); ++iE )
475 TopoDS_Edge srcE = srcWire->Edge( iE );
476 TopoDS_Edge tgtE = TopoDS::Edge( shape2ShapeMap( srcE, /*isSrc=*/true));
477 TopoDS_Shape srcEbis = shape2ShapeMap( tgtE, /*isSrc=*/false );
478 if ( srcE.Orientation() != srcEbis.Orientation() )
481 // reverse a seam edge encountered for the second time
482 const int index = edgeMap.Add( tgtE );
483 if ( index < edgeMap.Extent() ) // E is a seam
485 // check which of edges to reverse, E or one already being in tgtEdges
486 if ( are2dConnected( tgtEdges.back(), tgtE, tgtFace ))
488 list< TopoDS_Edge >::iterator eIt = tgtEdges.begin();
489 std::advance( eIt, index-1 );
490 if ( are2dConnected( tgtEdges.back(), *eIt, tgtFace ))
498 if ( srcWire->NbEdges() == 1 && tgtMesh == srcMesh ) // circle
500 // try to verify ori by propagation
501 pair<int,TopoDS_Edge> nE =
502 StdMeshers_ProjectionUtils::GetPropagationEdge( srcMesh, tgtE, srcE );
503 if ( !nE.second.IsNull() )
506 tgtEdges.push_back( tgtE );
509 // Fill map of src to tgt nodes with nodes on edges
511 if ( srcMesh->GetSubMesh( srcE )->IsEmpty() ||
512 tgtMesh->GetSubMesh( tgtE )->IsEmpty() )
514 // add nodes on VERTEXes for a case of not meshes EDGEs
515 const TopoDS_Shape& srcV = SMESH_MesherHelper::IthVertex( 0, srcE );
516 const TopoDS_Shape& tgtV = shape2ShapeMap( srcV, /*isSrc=*/true );
517 const SMDS_MeshNode* srcN = SMESH_Algo::VertexNode( TopoDS::Vertex( srcV ), srcMeshDS );
518 const SMDS_MeshNode* tgtN = SMESH_Algo::VertexNode( TopoDS::Vertex( tgtV ), tgtMeshDS );
520 src2tgtNodes.insert( make_pair( srcN, tgtN ));
524 const bool skipMediumNodes = true;
525 map< double, const SMDS_MeshNode* > srcNodes, tgtNodes;
526 if ( !SMESH_Algo::GetSortedNodesOnEdge( srcMeshDS, srcE, skipMediumNodes, srcNodes) ||
527 !SMESH_Algo::GetSortedNodesOnEdge( tgtMeshDS, tgtE, skipMediumNodes, tgtNodes ))
528 return SMESH_ComputeError::New( COMPERR_BAD_INPUT_MESH,
529 "Invalid node parameters on edges");
531 if (( srcNodes.size() != tgtNodes.size() ) && tgtNodes.size() > 0 )
532 return SMESH_ComputeError::New( COMPERR_BAD_INPUT_MESH,
533 "Different number of nodes on edges");
534 if ( !tgtNodes.empty() )
536 map< double, const SMDS_MeshNode* >::iterator u_tn = tgtNodes.begin();
537 if ( srcE.Orientation() == tgtE.Orientation() )
539 map< double, const SMDS_MeshNode* >::iterator u_sn = srcNodes.begin();
540 for ( ; u_tn != tgtNodes.end(); ++u_tn, ++u_sn)
541 src2tgtNodes.insert( make_pair( u_sn->second, u_tn->second ));
545 map< double, const SMDS_MeshNode* >::reverse_iterator u_sn = srcNodes.rbegin();
546 for ( ; u_tn != tgtNodes.end(); ++u_tn, ++u_sn)
547 src2tgtNodes.insert( make_pair( u_sn->second, u_tn->second ));
552 } // loop on EDGEs of a WIRE
554 tgtWires[ iW ].reset( new StdMeshers_FaceSide( tgtFace, tgtEdges, tgtMesh,
555 /*theIsForward = */ true,
556 /*theIgnoreMediumNodes = */false));
562 //================================================================================
564 * \brief Preform projection in case if tgtFace.IsPartner( srcFace ) and in case
565 * if projection by 3D transformation is possible
567 //================================================================================
569 bool projectPartner(const TopoDS_Face& tgtFace,
570 const TopoDS_Face& srcFace,
571 const TSideVector& tgtWires,
572 const TSideVector& srcWires,
573 const TAssocTool::TShapeShapeMap& shape2ShapeMap,
574 TAssocTool::TNodeNodeMap& src2tgtNodes,
575 const bool is1DComputed)
577 SMESH_Mesh * tgtMesh = tgtWires[0]->GetMesh();
578 SMESH_Mesh * srcMesh = srcWires[0]->GetMesh();
579 SMESHDS_Mesh* tgtMeshDS = tgtMesh->GetMeshDS();
580 SMESHDS_Mesh* srcMeshDS = srcMesh->GetMeshDS();
581 SMESH_MesherHelper helper( *tgtMesh );
583 const double tol = 1.e-7 * srcMeshDS->getMaxDim();
585 // transformation to get location of target nodes from source ones
586 StdMeshers_ProjectionUtils::TrsfFinder3D trsf;
587 bool trsfIsOK = false;
588 if ( tgtFace.IsPartner( srcFace ))
590 gp_GTrsf srcTrsf = srcFace.Location().Transformation();
591 gp_GTrsf tgtTrsf = tgtFace.Location().Transformation();
592 gp_GTrsf t = srcTrsf.Inverted().Multiplied( tgtTrsf );
595 gp_Pnt srcP = BRep_Tool::Pnt( srcWires[0]->FirstVertex() );
596 gp_Pnt tgtP = BRep_Tool::Pnt( tgtWires[0]->FirstVertex() );
597 trsfIsOK = ( tgtP.Distance( trsf.Transform( srcP )) < tol );
600 trsf.Set( tgtTrsf.Inverted().Multiplied( srcTrsf ));
601 trsfIsOK = ( tgtP.Distance( trsf.Transform( srcP )) < tol );
606 // Try to find the 3D transformation
608 const int totNbSeg = 50;
609 vector< gp_XYZ > srcPnts, tgtPnts;
610 srcPnts.reserve( totNbSeg );
611 tgtPnts.reserve( totNbSeg );
612 gp_XYZ srcBC( 0,0,0 ), tgtBC( 0,0,0 );
613 for ( size_t iW = 0; iW < srcWires.size(); ++iW )
615 const double minSegLen = srcWires[iW]->Length() / totNbSeg;
616 for ( int iE = 0; iE < srcWires[iW]->NbEdges(); ++iE )
618 int nbSeg = Max( 1, int( srcWires[iW]->EdgeLength( iE ) / minSegLen ));
619 double srcU = srcWires[iW]->FirstParameter( iE );
620 double tgtU = tgtWires[iW]->FirstParameter( iE );
621 double srcDu = ( srcWires[iW]->LastParameter( iE )- srcU ) / nbSeg;
622 double tgtDu = ( tgtWires[iW]->LastParameter( iE )- tgtU ) / nbSeg;
623 for ( size_t i = 0; i < nbSeg; ++i )
625 srcPnts.push_back( srcWires[iW]->Value3d( srcU ).XYZ() );
626 tgtPnts.push_back( tgtWires[iW]->Value3d( tgtU ).XYZ() );
629 srcBC += srcPnts.back();
630 tgtBC += tgtPnts.back();
634 if ( !trsf.Solve( srcPnts, tgtPnts ))
639 const int nbTestPnt = 20;
640 const size_t iStep = Max( 1, int( srcPnts.size() / nbTestPnt ));
642 gp_Pnt trsfTgt = trsf.Transform( srcBC / srcPnts.size() );
643 trsfIsOK = ( trsfTgt.SquareDistance( tgtBC / tgtPnts.size() ) < tol*tol );
644 for ( size_t i = 0; ( i < srcPnts.size() && trsfIsOK ); i += iStep )
646 gp_Pnt trsfTgt = trsf.Transform( srcPnts[i] );
647 trsfIsOK = ( trsfTgt.SquareDistance( tgtPnts[i] ) < tol*tol );
649 // check an in-FACE point
652 BRepAdaptor_Surface srcSurf( srcFace );
654 srcSurf.Value( 0.321 * ( srcSurf.FirstUParameter() + srcSurf.LastUParameter() ),
655 0.123 * ( srcSurf.FirstVParameter() + srcSurf.LastVParameter() ));
656 gp_Pnt tgtTrsfP = trsf.Transform( srcP );
658 GeomAPI_ProjectPointOnSurf& proj = helper.GetProjector( tgtFace, loc, 0.1*tol );
659 if ( !loc.IsIdentity() )
660 tgtTrsfP.Transform( loc.Transformation().Inverted() );
661 proj.Perform( tgtTrsfP );
662 trsfIsOK = ( proj.IsDone() &&
663 proj.NbPoints() > 0 &&
664 proj.LowerDistance() < tol );
672 // prepare the helper to adding quadratic elements if necessary
673 helper.SetSubShape( tgtFace );
674 helper.IsQuadraticSubMesh( tgtFace );
676 SMESHDS_SubMesh* srcSubDS = srcMeshDS->MeshElements( srcFace );
677 if ( !is1DComputed && srcSubDS->NbElements() )
678 helper.SetIsQuadratic( srcSubDS->GetElements()->next()->IsQuadratic() );
680 SMESH_MesherHelper srcHelper( *srcMesh );
681 srcHelper.SetSubShape( srcFace );
683 const SMDS_MeshNode* nullNode = 0;
684 TAssocTool::TNodeNodeMap::iterator srcN_tgtN;
686 // indices of nodes to create properly oriented faces
687 bool isReverse = ( !trsf.IsIdentity() );
688 int tri1 = 1, tri2 = 2, quad1 = 1, quad3 = 3;
690 std::swap( tri1, tri2 ), std::swap( quad1, quad3 );
692 SMDS_ElemIteratorPtr elemIt = srcSubDS->GetElements();
693 vector< const SMDS_MeshNode* > tgtNodes;
694 while ( elemIt->more() ) // loop on all mesh faces on srcFace
696 const SMDS_MeshElement* elem = elemIt->next();
697 const int nbN = elem->NbCornerNodes();
698 tgtNodes.resize( nbN );
699 helper.SetElementsOnShape( false );
700 for ( int i = 0; i < nbN; ++i ) // loop on nodes of the source element
702 const SMDS_MeshNode* srcNode = elem->GetNode(i);
703 srcN_tgtN = src2tgtNodes.insert( make_pair( srcNode, nullNode )).first;
704 if ( srcN_tgtN->second == nullNode )
707 gp_Pnt tgtP = trsf.Transform( SMESH_TNodeXYZ( srcNode ));
708 SMDS_MeshNode* n = helper.AddNode( tgtP.X(), tgtP.Y(), tgtP.Z() );
709 srcN_tgtN->second = n;
710 switch ( srcNode->GetPosition()->GetTypeOfPosition() )
714 gp_Pnt2d srcUV = srcHelper.GetNodeUV( srcFace, srcNode );
715 tgtMeshDS->SetNodeOnFace( n, helper.GetSubShapeID(), srcUV.X(), srcUV.Y() );
720 const TopoDS_Shape & srcE = srcMeshDS->IndexToShape( srcNode->getshapeId() );
721 const TopoDS_Shape & tgtE = shape2ShapeMap( srcE, /*isSrc=*/true );
722 double srcU = srcHelper.GetNodeU( TopoDS::Edge( srcE ), srcNode );
723 tgtMeshDS->SetNodeOnEdge( n, TopoDS::Edge( tgtE ), srcU );
726 case SMDS_TOP_VERTEX:
728 const TopoDS_Shape & srcV = srcMeshDS->IndexToShape( srcNode->getshapeId() );
729 const TopoDS_Shape & tgtV = shape2ShapeMap( srcV, /*isSrc=*/true );
730 tgtMeshDS->SetNodeOnVertex( n, TopoDS::Vertex( tgtV ));
736 tgtNodes[i] = srcN_tgtN->second;
739 helper.SetElementsOnShape( true );
742 case 3: helper.AddFace(tgtNodes[0], tgtNodes[tri1], tgtNodes[tri2]); break;
743 case 4: helper.AddFace(tgtNodes[0], tgtNodes[quad1], tgtNodes[2], tgtNodes[quad3]); break;
745 if ( isReverse ) std::reverse( tgtNodes.begin(), tgtNodes.end() );
746 helper.AddPolygonalFace( tgtNodes );
750 // check node positions
752 if ( !tgtFace.IsPartner( srcFace ) )
754 SMESH_MesherHelper edgeHelper( *tgtMesh );
755 edgeHelper.ToFixNodeParameters( true );
756 helper.ToFixNodeParameters( true );
760 const double tol2d = 1e-12;
761 srcN_tgtN = src2tgtNodes.begin();
762 for ( ; srcN_tgtN != src2tgtNodes.end(); ++srcN_tgtN )
764 const SMDS_MeshNode* n = srcN_tgtN->second;
765 switch ( n->GetPosition()->GetTypeOfPosition() )
769 if ( nbOkPos > 10 ) break;
770 gp_XY uv = helper.GetNodeUV( tgtFace, n ), uvBis = uv;
771 if (( helper.CheckNodeUV( tgtFace, n, uv, tol )) &&
772 (( uv - uvBis ).SquareModulus() < tol2d ))
775 nbOkPos = -((int) src2tgtNodes.size() );
780 const TopoDS_Edge & tgtE = TopoDS::Edge( tgtMeshDS->IndexToShape( n->getshapeId() ));
781 edgeHelper.SetSubShape( tgtE );
782 edgeHelper.GetNodeU( tgtE, n, 0, &toCheck );
792 } // bool projectPartner()
794 //================================================================================
796 * \brief Preform projection in case if the faces are similar in 2D space
798 //================================================================================
800 bool projectBy2DSimilarity(const TopoDS_Face& tgtFace,
801 const TopoDS_Face& srcFace,
802 const TSideVector& tgtWires,
803 const TSideVector& srcWires,
804 const TAssocTool::TShapeShapeMap& shape2ShapeMap,
805 TAssocTool::TNodeNodeMap& src2tgtNodes,
806 const bool is1DComputed)
808 SMESH_Mesh * tgtMesh = tgtWires[0]->GetMesh();
809 SMESH_Mesh * srcMesh = srcWires[0]->GetMesh();
811 // WARNING: we can have problems if the FACE is symmetrical in 2D,
812 // then the projection can be mirrored relating to what is expected
814 // 1) Find 2D transformation
816 StdMeshers_ProjectionUtils::TrsfFinder2D trsf;
818 // get 2 pairs of corresponding UVs
819 gp_Pnt2d srcP0 = srcWires[0]->Value2d(0.0);
820 gp_Pnt2d srcP1 = srcWires[0]->Value2d(0.333);
821 gp_Pnt2d tgtP0 = tgtWires[0]->Value2d(0.0);
822 gp_Pnt2d tgtP1 = tgtWires[0]->Value2d(0.333);
824 // make transformation
825 gp_Trsf2d fromTgtCS, toSrcCS; // from/to global CS
826 gp_Ax2d srcCS( srcP0, gp_Vec2d( srcP0, srcP1 ));
827 gp_Ax2d tgtCS( tgtP0, gp_Vec2d( tgtP0, tgtP1 ));
828 toSrcCS .SetTransformation( srcCS );
829 fromTgtCS.SetTransformation( tgtCS );
831 trsf.Set( fromTgtCS * toSrcCS );
833 // check transformation
834 bool trsfIsOK = true;
835 const double tol = 1e-5 * gp_Vec2d( srcP0, srcP1 ).Magnitude();
836 for ( double u = 0.12; ( u < 1. && trsfIsOK ); u += 0.1 )
838 gp_Pnt2d srcUV = srcWires[0]->Value2d( u );
839 gp_Pnt2d tgtUV = tgtWires[0]->Value2d( u );
840 gp_Pnt2d tgtUV2 = trsf.Transform( srcUV );
841 trsfIsOK = ( tgtUV.Distance( tgtUV2 ) < tol );
844 // Find trsf using a least-square approximation
848 const int totNbSeg = 50;
849 vector< gp_XY > srcPnts, tgtPnts;
850 srcPnts.resize( totNbSeg );
851 tgtPnts.resize( totNbSeg );
852 for ( size_t iW = 0; iW < srcWires.size(); ++iW )
854 const double minSegLen = srcWires[iW]->Length() / totNbSeg;
855 for ( int iE = 0; iE < srcWires[iW]->NbEdges(); ++iE )
857 int nbSeg = Max( 1, int( srcWires[iW]->EdgeLength( iE ) / minSegLen ));
858 double srcU = srcWires[iW]->FirstParameter( iE );
859 double tgtU = tgtWires[iW]->FirstParameter( iE );
860 double srcDu = ( srcWires[iW]->LastParameter( iE )- srcU ) / nbSeg;
861 double tgtDu = ( tgtWires[iW]->LastParameter( iE )- tgtU ) / nbSeg;
862 for ( size_t i = 0; i < nbSeg; ++i, srcU += srcDu, tgtU += tgtDu )
864 srcPnts.push_back( srcWires[iW]->Value2d( srcU ).XY() );
865 tgtPnts.push_back( tgtWires[iW]->Value2d( tgtU ).XY() );
869 if ( !trsf.Solve( srcPnts, tgtPnts ))
875 const int nbTestPnt = 10;
876 const size_t iStep = Max( 1, int( srcPnts.size() / nbTestPnt ));
877 for ( size_t i = 0; ( i < srcPnts.size() && trsfIsOK ); i += iStep )
879 gp_Pnt2d trsfTgt = trsf.Transform( srcPnts[i] );
880 trsfIsOK = ( trsfTgt.Distance( tgtPnts[i] ) < tol );
885 } // "Find transformation" block
889 SMESHDS_SubMesh* srcSubDS = srcMesh->GetMeshDS()->MeshElements( srcFace );
891 SMESH_MesherHelper helper( *tgtMesh );
892 helper.SetSubShape( tgtFace );
894 helper.IsQuadraticSubMesh( tgtFace );
896 helper.SetIsQuadratic( srcSubDS->GetElements()->next()->IsQuadratic() );
897 helper.SetElementsOnShape( true );
898 Handle(Geom_Surface) tgtSurface = BRep_Tool::Surface( tgtFace );
899 SMESHDS_Mesh* tgtMeshDS = tgtMesh->GetMeshDS();
901 SMESH_MesherHelper srcHelper( *srcMesh );
902 srcHelper.SetSubShape( srcFace );
904 const SMDS_MeshNode* nullNode = 0;
905 TAssocTool::TNodeNodeMap::iterator srcN_tgtN;
907 SMDS_ElemIteratorPtr elemIt = srcSubDS->GetElements();
908 vector< const SMDS_MeshNode* > tgtNodes;
910 while ( elemIt->more() ) // loop on all mesh faces on srcFace
912 const SMDS_MeshElement* elem = elemIt->next();
913 const int nbN = elem->NbCornerNodes();
914 tgtNodes.resize( nbN );
915 for ( int i = 0; i < nbN; ++i ) // loop on nodes of the source element
917 const SMDS_MeshNode* srcNode = elem->GetNode(i);
918 srcN_tgtN = src2tgtNodes.insert( make_pair( srcNode, nullNode )).first;
919 if ( srcN_tgtN->second == nullNode )
922 gp_Pnt2d srcUV = srcHelper.GetNodeUV( srcFace, srcNode,
923 elem->GetNode( helper.WrapIndex(i+1,nbN)), &uvOK);
924 gp_Pnt2d tgtUV = trsf.Transform( srcUV );
925 gp_Pnt tgtP = tgtSurface->Value( tgtUV.X(), tgtUV.Y() );
926 SMDS_MeshNode* n = tgtMeshDS->AddNode( tgtP.X(), tgtP.Y(), tgtP.Z() );
927 switch ( srcNode->GetPosition()->GetTypeOfPosition() )
929 case SMDS_TOP_FACE: {
930 tgtMeshDS->SetNodeOnFace( n, helper.GetSubShapeID(), tgtUV.X(), tgtUV.Y() );
933 case SMDS_TOP_EDGE: {
934 TopoDS_Shape srcEdge = srcHelper.GetSubShapeByNode( srcNode, srcHelper.GetMeshDS() );
935 TopoDS_Edge tgtEdge = TopoDS::Edge( shape2ShapeMap( srcEdge, /*isSrc=*/true ));
936 double U = Precision::Infinite();
937 helper.CheckNodeU( tgtEdge, n, U, Precision::PConfusion());
938 tgtMeshDS->SetNodeOnEdge( n, TopoDS::Edge( tgtEdge ), U );
941 case SMDS_TOP_VERTEX: {
942 TopoDS_Shape srcV = srcHelper.GetSubShapeByNode( srcNode, srcHelper.GetMeshDS() );
943 TopoDS_Shape tgtV = shape2ShapeMap( srcV, /*isSrc=*/true );
944 tgtMeshDS->SetNodeOnVertex( n, TopoDS::Vertex( tgtV ));
948 srcN_tgtN->second = n;
950 tgtNodes[i] = srcN_tgtN->second;
952 // create a new face (with reversed orientation)
955 case 3: helper.AddFace(tgtNodes[0], tgtNodes[2], tgtNodes[1]); break;
956 case 4: helper.AddFace(tgtNodes[0], tgtNodes[3], tgtNodes[2], tgtNodes[1]); break;
958 } // loop on all mesh faces on srcFace
963 //================================================================================
965 * \brief Preform projection in case of quadrilateral faces
967 //================================================================================
969 bool projectQuads(const TopoDS_Face& tgtFace,
970 const TopoDS_Face& srcFace,
971 const TSideVector& tgtWires,
972 const TSideVector& srcWires,
973 const TAssocTool::TShapeShapeMap& shape2ShapeMap,
974 TAssocTool::TNodeNodeMap& src2tgtNodes,
975 const bool is1DComputed)
977 SMESH_Mesh * tgtMesh = tgtWires[0]->GetMesh();
978 SMESH_Mesh * srcMesh = srcWires[0]->GetMesh();
979 SMESHDS_Mesh * tgtMeshDS = tgtMesh->GetMeshDS();
980 SMESHDS_Mesh * srcMeshDS = srcMesh->GetMeshDS();
982 if ( srcWires[0]->NbEdges() != 4 )
986 for ( int iE = 0; iE < 4; ++iE )
988 SMESHDS_SubMesh* sm = srcMeshDS->MeshElements( srcWires[0]->Edge( iE ));
989 if ( !sm ) return false;
990 if ( sm->NbNodes() + sm->NbElements() == 0 ) return false;
992 if ( BRepAdaptor_Surface( tgtFace ).GetType() != GeomAbs_Plane )
994 // if ( BRepAdaptor_Surface( tgtFace ).GetType() == GeomAbs_Plane &&
995 // BRepAdaptor_Surface( srcFace ).GetType() == GeomAbs_Plane )
996 // return false; // too easy
998 // load EDGEs to SMESH_Block
1001 TopTools_IndexedMapOfOrientedShape blockSubShapes;
1003 const TopoDS_Solid& box = srcMesh->PseudoShape();
1004 TopoDS_Shell shell = TopoDS::Shell( TopExp_Explorer( box, TopAbs_SHELL ).Current() );
1006 block.LoadBlockShapes( shell, v, v, blockSubShapes ); // fill all since operator[] is missing
1008 const SMESH_Block::TShapeID srcFaceBID = SMESH_Block::ID_Fxy0;
1009 const SMESH_Block::TShapeID tgtFaceBID = SMESH_Block::ID_Fxy1;
1010 vector< int > edgeBID;
1011 block.GetFaceEdgesIDs( srcFaceBID, edgeBID ); // u0, u1, 0v, 1v
1012 blockSubShapes.Substitute( edgeBID[0], srcWires[0]->Edge(0) );
1013 blockSubShapes.Substitute( edgeBID[1], srcWires[0]->Edge(2) );
1014 blockSubShapes.Substitute( edgeBID[2], srcWires[0]->Edge(3) );
1015 blockSubShapes.Substitute( edgeBID[3], srcWires[0]->Edge(1) );
1016 block.GetFaceEdgesIDs( tgtFaceBID, edgeBID ); // u0, u1, 0v, 1v
1017 blockSubShapes.Substitute( edgeBID[0], tgtWires[0]->Edge(0) );
1018 blockSubShapes.Substitute( edgeBID[1], tgtWires[0]->Edge(2) );
1019 blockSubShapes.Substitute( edgeBID[2], tgtWires[0]->Edge(3) );
1020 blockSubShapes.Substitute( edgeBID[3], tgtWires[0]->Edge(1) );
1021 block.LoadFace( srcFace, srcFaceBID, blockSubShapes );
1022 block.LoadFace( tgtFace, tgtFaceBID, blockSubShapes );
1024 // remember connectivity of new faces in terms of ( node-or-XY )
1026 typedef std::pair< const SMDS_MeshNode*, gp_XYZ > TNodeOrXY; // node-or-XY
1027 typedef std::vector< TNodeOrXY* > TFaceConn; // face connectivity
1028 std::vector< TFaceConn > newFacesVec; // connectivity of all faces
1029 std::map< const SMDS_MeshNode*, TNodeOrXY > srcNode2tgtNXY; // src node -> node-or-XY
1031 TAssocTool::TNodeNodeMap::iterator srcN_tgtN;
1032 std::map< const SMDS_MeshNode*, TNodeOrXY >::iterator srcN_tgtNXY;
1033 std::pair< std::map< const SMDS_MeshNode*, TNodeOrXY >::iterator, bool > n2n_isNew;
1034 TNodeOrXY nullNXY( (SMDS_MeshNode*)NULL, gp_XYZ(0,0,0) );
1036 SMESHDS_SubMesh* srcSubDS = srcMeshDS->MeshElements( srcFace );
1037 newFacesVec.resize( srcSubDS->NbElements() );
1040 SMDS_ElemIteratorPtr elemIt = srcSubDS->GetElements();
1041 while ( elemIt->more() ) // loop on all mesh faces on srcFace
1043 const SMDS_MeshElement* elem = elemIt->next();
1044 TFaceConn& tgtNodes = newFacesVec[ iFaceSrc++ ];
1046 const int nbN = elem->NbCornerNodes();
1047 tgtNodes.resize( nbN );
1048 for ( int i = 0; i < nbN; ++i ) // loop on nodes of the source element
1050 const SMDS_MeshNode* srcNode = elem->GetNode(i);
1051 n2n_isNew = srcNode2tgtNXY.insert( make_pair( srcNode, nullNXY ));
1052 TNodeOrXY & tgtNodeOrXY = n2n_isNew.first->second;
1053 if ( n2n_isNew.second ) // new src node encounters
1055 srcN_tgtN = src2tgtNodes.find( srcNode );
1056 if ( srcN_tgtN != src2tgtNodes.end() )
1058 tgtNodeOrXY.first = srcN_tgtN->second; // tgt node exists
1062 // find XY of src node withing the quadrilateral srcFace
1063 if ( !block.ComputeParameters( SMESH_TNodeXYZ( srcNode ),
1064 tgtNodeOrXY.second, srcFaceBID ))
1068 tgtNodes[ i ] = & tgtNodeOrXY;
1072 // as all XY are computed, create tgt nodes and faces
1074 SMESH_MesherHelper helper( *tgtMesh );
1075 helper.SetSubShape( tgtFace );
1077 helper.IsQuadraticSubMesh( tgtFace );
1079 helper.SetIsQuadratic( srcSubDS->GetElements()->next()->IsQuadratic() );
1080 helper.SetElementsOnShape( true );
1081 Handle(Geom_Surface) tgtSurface = BRep_Tool::Surface( tgtFace );
1083 SMESH_MesherHelper srcHelper( *srcMesh );
1084 srcHelper.SetSubShape( srcFace );
1086 vector< const SMDS_MeshNode* > tgtNodes;
1089 for ( size_t iFaceTgt = 0; iFaceTgt < newFacesVec.size(); ++iFaceTgt )
1091 TFaceConn& tgtConn = newFacesVec[ iFaceTgt ];
1092 tgtNodes.resize( tgtConn.size() );
1093 for ( size_t iN = 0; iN < tgtConn.size(); ++iN )
1095 const SMDS_MeshNode* & tgtN = tgtConn[ iN ]->first;
1096 if ( !tgtN ) // create a node
1098 if ( !block.FaceUV( tgtFaceBID, tgtConn[iN]->second, uv ))
1100 gp_Pnt p = tgtSurface->Value( uv.X(), uv.Y() );
1101 tgtN = helper.AddNode( p.X(), p.Y(), p.Z(), uv.X(), uv.Y() );
1103 tgtNodes[ tgtNodes.size() - iN - 1] = tgtN; // reversed orientation
1105 switch ( tgtNodes.size() )
1107 case 3: helper.AddFace(tgtNodes[0], tgtNodes[1], tgtNodes[2]); break;
1108 case 4: helper.AddFace(tgtNodes[0], tgtNodes[1], tgtNodes[2], tgtNodes[3]); break;
1110 if ( tgtNodes.size() > 4 )
1111 helper.AddPolygonalFace( tgtNodes );
1116 } // bool projectQuads(...)
1118 //================================================================================
1120 * \brief Fix bad faces by smoothing
1122 //================================================================================
1124 bool fixDistortedFaces( SMESH_MesherHelper& helper,
1125 TSideVector& tgtWires )
1127 SMESH_subMesh* faceSM = helper.GetMesh()->GetSubMesh( helper.GetSubShape() );
1129 if ( helper.IsDistorted2D( faceSM, /*checkUV=*/false ))
1131 SMESH_MeshEditor editor( helper.GetMesh() );
1132 SMESHDS_SubMesh* smDS = faceSM->GetSubMeshDS();
1133 const TopoDS_Face& F = TopoDS::Face( faceSM->GetSubShape() );
1135 TIDSortedElemSet faces;
1136 SMDS_ElemIteratorPtr faceIt = smDS->GetElements();
1137 for ( faceIt = smDS->GetElements(); faceIt->more(); )
1138 faces.insert( faces.end(), faceIt->next() );
1140 // choose smoothing algo
1141 //SMESH_MeshEditor:: SmoothMethod algo = SMESH_MeshEditor::CENTROIDAL;
1142 bool isConcaveBoundary = false;
1143 for ( size_t iW = 0; iW < tgtWires.size() && !isConcaveBoundary; ++iW )
1145 TopoDS_Edge prevEdge = tgtWires[iW]->Edge( tgtWires[iW]->NbEdges() - 1 );
1146 for ( int iE = 0; iE < tgtWires[iW]->NbEdges() && !isConcaveBoundary; ++iE )
1148 double angle = helper.GetAngle( prevEdge, tgtWires[iW]->Edge( iE ),
1149 F, tgtWires[iW]->FirstVertex( iE ));
1150 isConcaveBoundary = ( angle < -5. * M_PI / 180. );
1152 prevEdge = tgtWires[iW]->Edge( iE );
1155 SMESH_MeshEditor:: SmoothMethod algo =
1156 isConcaveBoundary ? SMESH_MeshEditor::CENTROIDAL : SMESH_MeshEditor::LAPLACIAN;
1158 // smooth in 2D or 3D?
1159 TopLoc_Location loc;
1160 Handle(Geom_Surface) surface = BRep_Tool::Surface( F, loc );
1161 bool isPlanar = GeomLib_IsPlanarSurface( surface ).IsPlanar();
1164 set<const SMDS_MeshNode*> fixedNodes;
1165 editor.Smooth( faces, fixedNodes, algo, /*nbIterations=*/ 10,
1166 /*theTgtAspectRatio=*/1.0, /*the2D=*/!isPlanar);
1168 helper.ToFixNodeParameters( true );
1170 return !helper.IsDistorted2D( faceSM, /*checkUV=*/true );
1178 //=======================================================================
1179 //function : Compute
1181 //=======================================================================
1183 bool StdMeshers_Projection_2D::Compute(SMESH_Mesh& theMesh, const TopoDS_Shape& theShape)
1185 _src2tgtNodes.clear();
1187 MESSAGE("Projection_2D Compute");
1191 SMESH_Mesh * srcMesh = _sourceHypo->GetSourceMesh();
1192 SMESH_Mesh * tgtMesh = & theMesh;
1196 SMESHDS_Mesh * meshDS = theMesh.GetMeshDS();
1197 SMESH_MesherHelper helper( theMesh );
1199 // ---------------------------
1200 // Make sub-shapes association
1201 // ---------------------------
1203 TopoDS_Face tgtFace = TopoDS::Face( theShape.Oriented(TopAbs_FORWARD));
1204 TopoDS_Shape srcShape = _sourceHypo->GetSourceFace().Oriented(TopAbs_FORWARD);
1206 TAssocTool::TShapeShapeMap shape2ShapeMap;
1207 TAssocTool::InitVertexAssociation( _sourceHypo, shape2ShapeMap );
1208 if ( !TAssocTool::FindSubShapeAssociation( tgtFace, tgtMesh, srcShape, srcMesh,
1210 !shape2ShapeMap.IsBound( tgtFace ))
1212 if ( srcShape.ShapeType() == TopAbs_FACE )
1214 int nbE1 = helper.Count( tgtFace, TopAbs_EDGE, /*ignoreSame=*/true );
1215 int nbE2 = helper.Count( srcShape, TopAbs_EDGE, /*ignoreSame=*/true );
1217 return error(COMPERR_BAD_SHAPE,
1218 SMESH_Comment("Different number of edges in source and target faces: ")
1219 << nbE2 << " and " << nbE1 );
1221 return error(COMPERR_BAD_SHAPE,"Topology of source and target faces seems different" );
1223 TopoDS_Face srcFace = TopoDS::Face( shape2ShapeMap( tgtFace ).Oriented(TopAbs_FORWARD));
1226 // if ( srcMesh == tgtMesh )
1228 // TopoDS_Shape solid =
1229 // helper.GetCommonAncestor( srcFace, tgtFace, *tgtMesh, TopAbs_SOLID );
1230 // if ( !solid.IsNull() )
1232 // srcFace.Orientation( helper.GetSubShapeOri( solid, srcFace ));
1233 // tgtFace.Orientation( helper.GetSubShapeOri( solid, tgtFace ));
1235 // else if ( helper.NbAncestors( srcFace, *tgtMesh, TopAbs_SOLID ) == 1 &&
1236 // helper.NbAncestors( tgtFace, *tgtMesh, TopAbs_SOLID ) == 1 )
1238 // srcFace.Orientation( helper.GetSubShapeOri( tgtMesh->GetShapeToMesh(), srcFace ));
1239 // tgtFace.Orientation( helper.GetSubShapeOri( tgtMesh->GetShapeToMesh(), tgtFace ));
1242 // ----------------------------------------------
1243 // Assure that mesh on a source Face is computed
1244 // ----------------------------------------------
1246 SMESH_subMesh* srcSubMesh = srcMesh->GetSubMesh( srcFace );
1247 SMESH_subMesh* tgtSubMesh = tgtMesh->GetSubMesh( tgtFace );
1249 string srcMeshError;
1250 if ( tgtMesh == srcMesh ) {
1251 if ( !TAssocTool::MakeComputed( srcSubMesh ))
1252 srcMeshError = TAssocTool::SourceNotComputedError( srcSubMesh, this );
1255 if ( !srcSubMesh->IsMeshComputed() )
1256 srcMeshError = TAssocTool::SourceNotComputedError();
1258 if ( !srcMeshError.empty() )
1259 return error(COMPERR_BAD_INPUT_MESH, srcMeshError );
1265 // get ordered src and tgt EDGEs
1266 TSideVector srcWires, tgtWires;
1267 bool is1DComputed = false; // if any tgt EDGE is meshed
1268 TError err = getWires( tgtFace, srcFace, tgtMesh, srcMesh,
1269 shape2ShapeMap, srcWires, tgtWires, _src2tgtNodes, is1DComputed );
1270 if ( err && !err->IsOK() )
1271 return error( err );
1273 bool projDone = false;
1277 // try to project from the same face with different location
1278 projDone = projectPartner( tgtFace, srcFace, tgtWires, srcWires,
1279 shape2ShapeMap, _src2tgtNodes, is1DComputed );
1283 // projection in case if the faces are similar in 2D space
1284 projDone = projectBy2DSimilarity( tgtFace, srcFace, tgtWires, srcWires,
1285 shape2ShapeMap, _src2tgtNodes, is1DComputed);
1289 // projection in case of quadrilateral faces
1290 // projDone = projectQuads( tgtFace, srcFace, tgtWires, srcWires,
1291 // shape2ShapeMap, _src2tgtNodes, is1DComputed);
1294 helper.SetSubShape( tgtFace );
1296 // it will remove mesh built on edges and vertices in failure case
1297 MeshCleaner cleaner( tgtSubMesh );
1301 _src2tgtNodes.clear();
1302 // --------------------
1303 // Prepare to mapping
1304 // --------------------
1306 // Check if node projection to a face is needed
1308 SMDS_ElemIteratorPtr faceIt = srcSubMesh->GetSubMeshDS()->GetElements();
1309 set< const SMDS_MeshNode* > faceNodes;
1310 for ( ; faceNodes.size() < 3 && faceIt->more(); ) {
1311 const SMDS_MeshElement* face = faceIt->next();
1312 SMDS_ElemIteratorPtr nodeIt = face->nodesIterator();
1313 while ( nodeIt->more() ) {
1314 const SMDS_MeshNode* node = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
1315 if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE &&
1316 faceNodes.insert( node ).second )
1317 uvBox.Add( helper.GetNodeUV( srcFace, node ));
1320 bool toProjectNodes = false;
1321 if ( faceNodes.size() == 1 )
1322 toProjectNodes = ( uvBox.IsVoid() || uvBox.CornerMin().IsEqual( gp_XY(0,0), 1e-12 ));
1323 else if ( faceNodes.size() > 1 )
1324 toProjectNodes = ( uvBox.IsVoid() || uvBox.SquareExtent() < DBL_MIN );
1326 // Find the corresponding source and target vertex
1327 // and <theReverse> flag needed to call mapper.Apply()
1329 TopoDS_Vertex srcV1, tgtV1;
1330 bool reverse = false;
1332 TopExp_Explorer vSrcExp( srcFace, TopAbs_VERTEX );
1333 srcV1 = TopoDS::Vertex( vSrcExp.Current() );
1334 tgtV1 = TopoDS::Vertex( shape2ShapeMap( srcV1, /*isSrc=*/true ));
1336 list< TopoDS_Edge > tgtEdges, srcEdges;
1337 list< int > nbEdgesInWires;
1338 SMESH_Block::GetOrderedEdges( tgtFace, tgtEdges, nbEdgesInWires, tgtV1 );
1339 SMESH_Block::GetOrderedEdges( srcFace, srcEdges, nbEdgesInWires, srcV1 );
1341 if ( nbEdgesInWires.front() > 1 ) // possible to find out orientation
1343 TopoDS_Edge srcE1 = srcEdges.front(), tgtE1 = tgtEdges.front();
1344 TopoDS_Shape srcE1bis = shape2ShapeMap( tgtE1 );
1345 reverse = ( ! srcE1.IsSame( srcE1bis ));
1347 //_sourceHypo->HasVertexAssociation() &&
1348 nbEdgesInWires.front() > 2 &&
1349 helper.IsRealSeam( tgtEdges.front() ))
1351 // projection to a face with seam EDGE; pb is that GetOrderedEdges()
1352 // always puts a seam EDGE first (if possible) and as a result
1353 // we can't use only theReverse flag to correctly associate source
1354 // and target faces in the mapper. Thus we select srcV1 so that
1355 // GetOrderedEdges() to return EDGEs in a needed order
1356 TopoDS_Face tgtFaceBis = tgtFace;
1357 TopTools_MapOfShape checkedVMap( tgtEdges.size() );
1358 checkedVMap.Add ( srcV1 );
1359 for ( vSrcExp.Next(); vSrcExp.More(); )
1361 tgtFaceBis.Reverse();
1363 SMESH_Block::GetOrderedEdges( tgtFaceBis, tgtEdges, nbEdgesInWires, tgtV1 );
1365 list< TopoDS_Edge >::iterator edgeS = srcEdges.begin(), edgeT = tgtEdges.begin();
1366 for ( ; edgeS != srcEdges.end() && ok ; ++edgeS, ++edgeT )
1367 ok = edgeT->IsSame( shape2ShapeMap( *edgeS, /*isSrc=*/true ));
1375 while ( vSrcExp.More() && !checkedVMap.Add( vSrcExp.Current() ))
1380 srcV1 = TopoDS::Vertex( vSrcExp.Current() );
1381 tgtV1 = TopoDS::Vertex( shape2ShapeMap( srcV1, /*isSrc=*/true ));
1383 SMESH_Block::GetOrderedEdges( srcFace, srcEdges, nbEdgesInWires, srcV1 );
1387 // for the case: project to a closed face from a non-closed face w/o vertex assoc;
1388 // avoid projecting to a seam from two EDGEs with different nb nodes on them
1389 // ( test mesh_Projection_2D_01/B1 )
1390 if ( !_sourceHypo->HasVertexAssociation() &&
1391 nbEdgesInWires.front() > 2 &&
1392 helper.IsRealSeam( tgtEdges.front() ))
1394 TopoDS_Shape srcEdge1 = shape2ShapeMap( tgtEdges.front() );
1395 list< TopoDS_Edge >::iterator srcEdge2 =
1396 std::find( srcEdges.begin(), srcEdges.end(), srcEdge1);
1397 list< TopoDS_Edge >::iterator srcEdge3 =
1398 std::find( srcEdges.begin(), srcEdges.end(), srcEdge1.Reversed());
1399 if ( srcEdge2 == srcEdges.end() || srcEdge3 == srcEdges.end() ) // srcEdge1 is not a seam
1401 // find srcEdge2 which also will be projected to tgtEdges.front()
1402 for ( srcEdge2 = srcEdges.begin(); srcEdge2 != srcEdges.end(); ++srcEdge2 )
1403 if ( !srcEdge1.IsSame( *srcEdge2 ) &&
1404 tgtEdges.front().IsSame( shape2ShapeMap( *srcEdge2, /*isSrc=*/true )))
1406 // compare nb nodes on srcEdge1 and srcEdge2
1407 if ( srcEdge2 != srcEdges.end() )
1409 int nbN1 = 0, nbN2 = 0;
1410 if ( SMESHDS_SubMesh* sm = srcMesh->GetMeshDS()->MeshElements( srcEdge1 ))
1411 nbN1 = sm->NbNodes();
1412 if ( SMESHDS_SubMesh* sm = srcMesh->GetMeshDS()->MeshElements( *srcEdge2 ))
1413 nbN2 = sm->NbNodes();
1415 srcV1 = helper.IthVertex( 1, srcEdges.front() );
1420 else if ( nbEdgesInWires.front() == 1 )
1422 // TODO::Compare orientation of curves in a sole edge
1423 //RETURN_BAD_RESULT("Not implemented case");
1427 RETURN_BAD_RESULT("Bad result from SMESH_Block::GetOrderedEdges()");
1430 // Load pattern from the source face
1431 SMESH_Pattern mapper;
1432 mapper.Load( srcMesh, srcFace, toProjectNodes, srcV1 );
1433 if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
1434 return error(COMPERR_BAD_INPUT_MESH,"Can't load mesh pattern from the source face");
1436 // --------------------
1437 // Perform 2D mapping
1438 // --------------------
1440 // Compute mesh on a target face
1442 mapper.Apply( tgtFace, tgtV1, reverse );
1443 if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK ) {
1444 // std::ofstream file("/tmp/Pattern.smp" );
1445 // mapper.Save( file );
1446 return error("Can't apply source mesh pattern to the face");
1451 const bool toCreatePolygons = false, toCreatePolyedrs = false;
1452 mapper.MakeMesh( tgtMesh, toCreatePolygons, toCreatePolyedrs );
1453 if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
1454 return error("Can't make mesh by source mesh pattern");
1456 // -------------------------------------------------------------------------
1457 // mapper doesn't take care of nodes already existing on edges and vertices,
1458 // so we must merge nodes created by it with existing ones
1459 // -------------------------------------------------------------------------
1461 SMESH_MeshEditor::TListOfListOfNodes groupsOfNodes;
1463 // Make groups of nodes to merge
1465 // loop on EDGE and VERTEX sub-meshes of a target FACE
1466 SMESH_subMeshIteratorPtr smIt = tgtSubMesh->getDependsOnIterator(/*includeSelf=*/false,
1467 /*complexShapeFirst=*/false);
1468 while ( smIt->more() )
1470 SMESH_subMesh* sm = smIt->next();
1471 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
1472 if ( !smDS || smDS->NbNodes() == 0 )
1474 //if ( !is1DComputed && sm->GetSubShape().ShapeType() == TopAbs_EDGE )
1477 if ( helper.IsDegenShape( sm->GetId() ) ) // to merge all nodes on degenerated
1479 if ( sm->GetSubShape().ShapeType() == TopAbs_EDGE )
1481 groupsOfNodes.push_back( list< const SMDS_MeshNode* >() );
1482 SMESH_subMeshIteratorPtr smDegenIt
1483 = sm->getDependsOnIterator(/*includeSelf=*/true,/*complexShapeFirst=*/false);
1484 while ( smDegenIt->more() )
1485 if (( smDS = smDegenIt->next()->GetSubMeshDS() ))
1487 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
1488 while ( nIt->more() )
1489 groupsOfNodes.back().push_back( nIt->next() );
1492 continue; // do not treat sm of degen VERTEX
1495 // Sort new and old nodes of a submesh separately
1497 bool isSeam = helper.IsRealSeam( sm->GetId() );
1499 enum { NEW_NODES = 0, OLD_NODES };
1500 map< double, const SMDS_MeshNode* > u2nodesMaps[2], u2nodesOnSeam;
1501 map< double, const SMDS_MeshNode* >::iterator u_oldNode, u_newNode, u_newOnSeam, newEnd;
1502 set< const SMDS_MeshNode* > seamNodes;
1504 // mapper changed, no more "mapper puts on a seam edge nodes from 2 edges"
1505 if ( isSeam && ! getBoundaryNodes ( sm, tgtFace, u2nodesOnSeam, seamNodes ))
1506 ;//RETURN_BAD_RESULT("getBoundaryNodes() failed");
1508 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
1509 while ( nIt->more() )
1511 const SMDS_MeshNode* node = nIt->next();
1512 bool isOld = isOldNode( node );
1514 if ( !isOld && isSeam ) { // new node on a seam edge
1515 if ( seamNodes.count( node ) )
1516 continue; // node is already in the map
1519 // sort nodes on edges by their position
1520 map< double, const SMDS_MeshNode* > & pos2nodes = u2nodesMaps[isOld ? OLD_NODES : NEW_NODES];
1521 switch ( node->GetPosition()->GetTypeOfPosition() )
1523 case SMDS_TOP_VERTEX: {
1524 if ( !is1DComputed && !pos2nodes.empty() )
1525 u2nodesMaps[isOld ? NEW_NODES : OLD_NODES].insert( make_pair( 0, node ));
1527 pos2nodes.insert( make_pair( 0, node ));
1530 case SMDS_TOP_EDGE: {
1531 const SMDS_EdgePosition* pos =
1532 static_cast<const SMDS_EdgePosition*>(node->GetPosition());
1533 pos2nodes.insert( make_pair( pos->GetUParameter(), node ));
1537 RETURN_BAD_RESULT("Wrong node position type: "<<
1538 node->GetPosition()->GetTypeOfPosition());
1541 const bool mergeNewToOld =
1542 ( u2nodesMaps[ NEW_NODES ].size() == u2nodesMaps[ OLD_NODES ].size() );
1543 const bool mergeSeamToNew =
1544 ( u2nodesMaps[ NEW_NODES ].size() == u2nodesOnSeam.size() );
1546 if ( !mergeNewToOld )
1547 if ( u2nodesMaps[ NEW_NODES ].size() > 0 &&
1548 u2nodesMaps[ OLD_NODES ].size() > 0 )
1550 u_oldNode = u2nodesMaps[ OLD_NODES ].begin();
1551 newEnd = u2nodesMaps[ OLD_NODES ].end();
1552 for ( ; u_oldNode != newEnd; ++u_oldNode )
1553 SMESH_Algo::addBadInputElement( u_oldNode->second );
1554 return error( COMPERR_BAD_INPUT_MESH,
1555 SMESH_Comment( "Existing mesh mismatches the projected 2D mesh on " )
1556 << ( sm->GetSubShape().ShapeType() == TopAbs_EDGE ? "edge" : "vertex" )
1557 << " #" << sm->GetId() );
1559 if ( isSeam && !mergeSeamToNew ) {
1560 const TopoDS_Shape& seam = sm->GetSubShape();
1561 if ( u2nodesMaps[ NEW_NODES ].size() > 0 &&
1562 u2nodesOnSeam.size() > 0 &&
1563 seam.ShapeType() == TopAbs_EDGE )
1565 int nbE1 = helper.Count( tgtFace, TopAbs_EDGE, /*ignoreSame=*/true );
1566 int nbE2 = helper.Count( srcFace, TopAbs_EDGE, /*ignoreSame=*/true );
1567 if ( nbE1 != nbE2 ) // 2 EDGEs are mapped to a seam EDGE
1569 // find the 2 EDGEs of srcFace
1570 TopTools_DataMapIteratorOfDataMapOfShapeShape src2tgtIt( shape2ShapeMap._map2to1 );
1571 for ( ; src2tgtIt.More(); src2tgtIt.Next() )
1572 if ( seam.IsSame( src2tgtIt.Value() ))
1573 SMESH_Algo::addBadInputElements
1574 ( srcMesh->GetMeshDS()->MeshElements( src2tgtIt.Key() ));
1575 return error( COMPERR_BAD_INPUT_MESH,
1576 "Different number of nodes on two edges projected to a seam edge" );
1581 // Make groups of nodes to merge
1583 u_oldNode = u2nodesMaps[ OLD_NODES ].begin();
1584 u_newNode = u2nodesMaps[ NEW_NODES ].begin();
1585 newEnd = u2nodesMaps[ NEW_NODES ].end();
1586 u_newOnSeam = u2nodesOnSeam.begin();
1587 if ( mergeNewToOld )
1588 for ( ; u_newNode != newEnd; ++u_newNode, ++u_oldNode )
1590 groupsOfNodes.push_back( list< const SMDS_MeshNode* >() );
1591 groupsOfNodes.back().push_back( u_oldNode->second );
1592 groupsOfNodes.back().push_back( u_newNode->second );
1593 if ( mergeSeamToNew )
1594 groupsOfNodes.back().push_back( (u_newOnSeam++)->second );
1596 else if ( mergeSeamToNew )
1597 for ( ; u_newNode != newEnd; ++u_newNode, ++u_newOnSeam )
1599 groupsOfNodes.push_back( list< const SMDS_MeshNode* >() );
1600 groupsOfNodes.back().push_back( u_newNode->second );
1601 groupsOfNodes.back().push_back( u_newOnSeam->second );
1604 } // loop on EDGE and VERTEX submeshes of a target FACE
1608 SMESH_MeshEditor editor( tgtMesh );
1609 int nbFaceBeforeMerge = tgtSubMesh->GetSubMeshDS()->NbElements();
1610 editor.MergeNodes( groupsOfNodes );
1611 int nbFaceAtferMerge = tgtSubMesh->GetSubMeshDS()->NbElements();
1612 if ( nbFaceBeforeMerge != nbFaceAtferMerge && !helper.HasDegeneratedEdges() )
1613 return error(COMPERR_BAD_INPUT_MESH, "Probably invalid node parameters on geom faces");
1615 // ----------------------------------------------------------------
1616 // The mapper can't create quadratic elements, so convert if needed
1617 // ----------------------------------------------------------------
1619 faceIt = srcSubMesh->GetSubMeshDS()->GetElements();
1620 bool srcIsQuad = faceIt->next()->IsQuadratic();
1621 faceIt = tgtSubMesh->GetSubMeshDS()->GetElements();
1622 bool tgtIsQuad = faceIt->next()->IsQuadratic();
1623 if ( srcIsQuad && !tgtIsQuad )
1625 TIDSortedElemSet tgtFaces;
1626 faceIt = tgtSubMesh->GetSubMeshDS()->GetElements();
1627 while ( faceIt->more() )
1628 tgtFaces.insert( tgtFaces.end(), faceIt->next() );
1630 editor.ConvertToQuadratic(/*theForce3d=*/false, tgtFaces, false);
1633 } // end of projection using Pattern mapping
1636 if ( !projDone || is1DComputed )
1637 // ----------------------------------------------------------------
1638 // The mapper can create distorted faces by placing nodes out of the FACE
1639 // boundary, also bad face can be created if EDGEs already discretized
1640 // --> fix bad faces by smoothing
1641 // ----------------------------------------------------------------
1642 if ( !fixDistortedFaces( helper, tgtWires ))
1643 return error("Invalid mesh generated");
1645 // ---------------------------
1646 // Check elements orientation
1647 // ---------------------------
1649 TopoDS_Face face = TopoDS::Face( theShape );
1650 if ( !theMesh.IsMainShape( tgtFace ))
1652 // find the main shape
1653 TopoDS_Shape mainShape = meshDS->ShapeToMesh();
1654 switch ( mainShape.ShapeType() ) {
1656 case TopAbs_SOLID: break;
1658 TopTools_ListIteratorOfListOfShape ancestIt = theMesh.GetAncestors( face );
1659 for ( ; ancestIt.More(); ancestIt.Next() ) {
1660 TopAbs_ShapeEnum type = ancestIt.Value().ShapeType();
1661 if ( type == TopAbs_SOLID ) {
1662 mainShape = ancestIt.Value();
1664 } else if ( type == TopAbs_SHELL ) {
1665 mainShape = ancestIt.Value();
1669 // find tgtFace in the main solid or shell to know it's true orientation.
1670 TopExp_Explorer exp( mainShape, TopAbs_FACE );
1671 for ( ; exp.More(); exp.Next() ) {
1672 if ( tgtFace.IsSame( exp.Current() )) {
1673 face = TopoDS::Face( exp.Current() );
1679 if ( helper.IsReversedSubMesh( face ))
1681 SMESH_MeshEditor editor( tgtMesh );
1682 SMDS_ElemIteratorPtr eIt = meshDS->MeshElements( face )->GetElements();
1683 while ( eIt->more() ) {
1684 const SMDS_MeshElement* e = eIt->next();
1685 if ( e->GetType() == SMDSAbs_Face && !editor.Reorient( e ))
1686 RETURN_BAD_RESULT("Pb of SMESH_MeshEditor::Reorient()");
1690 cleaner.Release(); // not to remove mesh
1696 //=======================================================================
1697 //function : Evaluate
1699 //=======================================================================
1701 bool StdMeshers_Projection_2D::Evaluate(SMESH_Mesh& theMesh,
1702 const TopoDS_Shape& theShape,
1703 MapShapeNbElems& aResMap)
1708 SMESH_Mesh * srcMesh = _sourceHypo->GetSourceMesh();
1709 SMESH_Mesh * tgtMesh = & theMesh;
1713 // ---------------------------
1714 // Make sub-shapes association
1715 // ---------------------------
1717 TopoDS_Face tgtFace = TopoDS::Face( theShape.Oriented(TopAbs_FORWARD));
1718 TopoDS_Shape srcShape = _sourceHypo->GetSourceFace().Oriented(TopAbs_FORWARD);
1720 TAssocTool::TShapeShapeMap shape2ShapeMap;
1721 TAssocTool::InitVertexAssociation( _sourceHypo, shape2ShapeMap );
1722 if ( !TAssocTool::FindSubShapeAssociation( tgtFace, tgtMesh, srcShape, srcMesh,
1724 !shape2ShapeMap.IsBound( tgtFace ))
1725 return error(COMPERR_BAD_SHAPE,"Topology of source and target faces seems different" );
1727 TopoDS_Face srcFace = TopoDS::Face( shape2ShapeMap( tgtFace ).Oriented(TopAbs_FORWARD));
1729 // -------------------------------------------------------
1730 // Assure that mesh on a source Face is computed/evaluated
1731 // -------------------------------------------------------
1733 std::vector<int> aVec;
1735 SMESH_subMesh* srcSubMesh = srcMesh->GetSubMesh( srcFace );
1736 if ( srcSubMesh->IsMeshComputed() )
1738 aVec.resize( SMDSEntity_Last, 0 );
1739 aVec[SMDSEntity_Node] = srcSubMesh->GetSubMeshDS()->NbNodes();
1741 SMDS_ElemIteratorPtr elemIt = srcSubMesh->GetSubMeshDS()->GetElements();
1742 while ( elemIt->more() )
1743 aVec[ elemIt->next()->GetEntityType() ]++;
1747 MapShapeNbElems tmpResMap;
1748 MapShapeNbElems& srcResMap = (srcMesh == tgtMesh) ? aResMap : tmpResMap;
1749 if ( !_gen->Evaluate( *srcMesh, srcShape, srcResMap ))
1750 return error(COMPERR_BAD_INPUT_MESH,"Source mesh not evaluatable");
1751 aVec = srcResMap[ srcSubMesh ];
1753 return error(COMPERR_BAD_INPUT_MESH,"Source mesh is wrongly evaluated");
1756 SMESH_subMesh * sm = theMesh.GetSubMesh(theShape);
1757 aResMap.insert(std::make_pair(sm,aVec));
1763 //=============================================================================
1765 * \brief Sets a default event listener to submesh of the source face
1766 * \param subMesh - submesh where algo is set
1768 * This method is called when a submesh gets HYP_OK algo_state.
1769 * After being set, event listener is notified on each event of a submesh.
1770 * Arranges that CLEAN event is translated from source submesh to
1773 //=============================================================================
1775 void StdMeshers_Projection_2D::SetEventListener(SMESH_subMesh* subMesh)
1777 TAssocTool::SetEventListener( subMesh,
1778 _sourceHypo->GetSourceFace(),
1779 _sourceHypo->GetSourceMesh() );