1 // Copyright (C) 2007-2014 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License, or (at your option) any later version.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
23 // 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 <BRep_Tool.hxx>
51 #include <Bnd_B2d.hxx>
53 #include <TopExp_Explorer.hxx>
54 #include <TopTools_DataMapIteratorOfDataMapOfShapeShape.hxx>
55 #include <TopTools_ListIteratorOfListOfShape.hxx>
63 #define RETURN_BAD_RESULT(msg) { MESSAGE(")-: Error: " << msg); return false; }
65 namespace TAssocTool = StdMeshers_ProjectionUtils;
66 //typedef StdMeshers_ProjectionUtils TAssocTool;
68 //=======================================================================
69 //function : StdMeshers_Projection_2D
71 //=======================================================================
73 StdMeshers_Projection_2D::StdMeshers_Projection_2D(int hypId, int studyId, SMESH_Gen* gen)
74 :SMESH_2D_Algo(hypId, studyId, gen)
76 _name = "Projection_2D";
77 _compatibleHypothesis.push_back("ProjectionSource2D");
81 //================================================================================
85 //================================================================================
87 StdMeshers_Projection_2D::~StdMeshers_Projection_2D()
90 //=======================================================================
91 //function : CheckHypothesis
93 //=======================================================================
95 bool StdMeshers_Projection_2D::CheckHypothesis(SMESH_Mesh& theMesh,
96 const TopoDS_Shape& theShape,
97 SMESH_Hypothesis::Hypothesis_Status& theStatus)
99 list <const SMESHDS_Hypothesis * >::const_iterator itl;
101 const list <const SMESHDS_Hypothesis * >&hyps = GetUsedHypothesis(theMesh, theShape);
102 if ( hyps.size() == 0 )
104 theStatus = HYP_MISSING;
105 return false; // can't work with no hypothesis
108 if ( hyps.size() > 1 )
110 theStatus = HYP_ALREADY_EXIST;
114 const SMESHDS_Hypothesis *theHyp = hyps.front();
116 string hypName = theHyp->GetName();
120 if (hypName == "ProjectionSource2D")
122 _sourceHypo = static_cast<const StdMeshers_ProjectionSource2D *>(theHyp);
124 // Check hypo parameters
126 SMESH_Mesh* srcMesh = _sourceHypo->GetSourceMesh();
127 SMESH_Mesh* tgtMesh = & theMesh;
132 if ( _sourceHypo->HasVertexAssociation() )
135 TopoDS_Shape edge = TAssocTool::GetEdgeByVertices
136 ( srcMesh, _sourceHypo->GetSourceVertex(1), _sourceHypo->GetSourceVertex(2) );
137 if ( edge.IsNull() ||
138 !SMESH_MesherHelper::IsSubShape( edge, srcMesh ) ||
139 !SMESH_MesherHelper::IsSubShape( edge, _sourceHypo->GetSourceFace() ))
141 theStatus = HYP_BAD_PARAMETER;
142 error("Invalid source vertices");
143 SCRUTE((edge.IsNull()));
144 SCRUTE((SMESH_MesherHelper::IsSubShape( edge, srcMesh )));
145 SCRUTE((SMESH_MesherHelper::IsSubShape( edge, _sourceHypo->GetSourceFace() )));
150 edge = TAssocTool::GetEdgeByVertices
151 ( tgtMesh, _sourceHypo->GetTargetVertex(1), _sourceHypo->GetTargetVertex(2) );
152 if ( edge.IsNull() || !SMESH_MesherHelper::IsSubShape( edge, tgtMesh ))
154 theStatus = HYP_BAD_PARAMETER;
155 error("Invalid target vertices");
156 SCRUTE((edge.IsNull()));
157 SCRUTE((SMESH_MesherHelper::IsSubShape( edge, tgtMesh )));
160 else if ( !_sourceHypo->IsCompoundSource() &&
161 !SMESH_MesherHelper::IsSubShape( edge, theShape ))
163 theStatus = HYP_BAD_PARAMETER;
164 error("Invalid target vertices");
165 SCRUTE((SMESH_MesherHelper::IsSubShape( edge, theShape )));
169 // check a source face
170 if ( !SMESH_MesherHelper::IsSubShape( _sourceHypo->GetSourceFace(), srcMesh ) ||
171 ( srcMesh == tgtMesh && theShape == _sourceHypo->GetSourceFace() ))
173 theStatus = HYP_BAD_PARAMETER;
174 error("Invalid source face");
175 SCRUTE((SMESH_MesherHelper::IsSubShape( _sourceHypo->GetSourceFace(), srcMesh )));
176 SCRUTE((srcMesh == tgtMesh));
177 SCRUTE(( theShape == _sourceHypo->GetSourceFace() ));
182 theStatus = HYP_INCOMPATIBLE;
184 return ( theStatus == HYP_OK );
189 //================================================================================
191 * \brief define if a node is new or old
192 * \param node - node to check
193 * \retval bool - true if the node existed before Compute() is called
195 //================================================================================
197 bool isOldNode( const SMDS_MeshNode* node/*, const bool is1DComputed*/ )
199 // old nodes are shared by edges and new ones are shared
200 // only by faces created by mapper
201 //if ( is1DComputed )
203 bool isOld = node->NbInverseElements(SMDSAbs_Edge) > 0;
208 // SMDS_ElemIteratorPtr invFace = node->GetInverseElementIterator(SMDSAbs_Face);
209 // bool isNew = invFace->more();
214 //================================================================================
216 * \brief Class to remove mesh built by pattern mapper on edges
217 * and vertices in the case of failure of projection algo.
218 * It does it's job at destruction
220 //================================================================================
225 MeshCleaner( SMESH_subMesh* faceSubMesh ): sm(faceSubMesh) {}
226 ~MeshCleaner() { Clean(sm); }
227 void Release() { sm = 0; } // mesh will not be removed
228 static void Clean( SMESH_subMesh* sm, bool withSub=true )
230 if ( !sm || !sm->GetSubMeshDS() ) return;
231 // PAL16567, 18920. Remove face nodes as well
232 // switch ( sm->GetSubShape().ShapeType() ) {
233 // case TopAbs_VERTEX:
234 // case TopAbs_EDGE: {
235 SMDS_NodeIteratorPtr nIt = sm->GetSubMeshDS()->GetNodes();
236 SMESHDS_Mesh* mesh = sm->GetFather()->GetMeshDS();
237 while ( nIt->more() ) {
238 const SMDS_MeshNode* node = nIt->next();
239 if ( !isOldNode( node ) )
240 mesh->RemoveNode( node );
242 // do not break but iterate over DependsOn()
245 if ( !withSub ) return;
246 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(false,false);
247 while ( smIt->more() )
248 Clean( smIt->next(), false );
253 //================================================================================
255 * \brief find new nodes belonging to one free border of mesh on face
256 * \param sm - submesh on edge or vertex containg nodes to choose from
257 * \param face - the face bound by the submesh
258 * \param u2nodes - map to fill with nodes
259 * \param seamNodes - set of found nodes
260 * \retval bool - is a success
262 //================================================================================
264 bool getBoundaryNodes ( SMESH_subMesh* sm,
265 const TopoDS_Face& face,
266 map< double, const SMDS_MeshNode* > & u2nodes,
267 set< const SMDS_MeshNode* > & seamNodes)
271 if ( !sm || !sm->GetSubMeshDS() )
272 RETURN_BAD_RESULT("Null submesh");
274 SMDS_NodeIteratorPtr nIt = sm->GetSubMeshDS()->GetNodes();
275 switch ( sm->GetSubShape().ShapeType() ) {
277 case TopAbs_VERTEX: {
278 while ( nIt->more() ) {
279 const SMDS_MeshNode* node = nIt->next();
280 if ( isOldNode( node ) ) continue;
281 u2nodes.insert( make_pair( 0., node ));
282 seamNodes.insert( node );
289 // Get submeshes of sub-vertices
290 const map< int, SMESH_subMesh * >& subSM = sm->DependsOn();
291 if ( subSM.size() != 2 )
292 RETURN_BAD_RESULT("there must be 2 submeshes of sub-vertices"
293 " but we have " << subSM.size());
294 SMESH_subMesh* smV1 = subSM.begin()->second;
295 SMESH_subMesh* smV2 = subSM.rbegin()->second;
296 if ( !smV1->IsMeshComputed() || !smV2->IsMeshComputed() )
297 RETURN_BAD_RESULT("Empty vertex submeshes");
299 const SMDS_MeshNode* nV1 = 0;
300 const SMDS_MeshNode* nE = 0;
302 // Look for nV1 - a new node on V1
303 nIt = smV1->GetSubMeshDS()->GetNodes();
304 while ( nIt->more() && !nE ) {
305 const SMDS_MeshNode* node = nIt->next();
306 if ( isOldNode( node ) ) continue;
309 // Find nE - a new node connected to nV1 and belonging to edge submesh;
310 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
311 SMDS_ElemIteratorPtr vElems = nV1->GetInverseElementIterator(SMDSAbs_Face);
312 while ( vElems->more() && !nE ) {
313 const SMDS_MeshElement* elem = vElems->next();
314 int nbNodes = elem->NbNodes();
315 if ( elem->IsQuadratic() )
317 int iV1 = elem->GetNodeIndex( nV1 );
318 // try next after nV1
319 int iE = SMESH_MesherHelper::WrapIndex( iV1 + 1, nbNodes );
320 if ( smDS->Contains( elem->GetNode( iE ) ))
321 nE = elem->GetNode( iE );
323 // try node before nV1
324 iE = SMESH_MesherHelper::WrapIndex( iV1 - 1, nbNodes );
325 if ( smDS->Contains( elem->GetNode( iE )))
326 nE = elem->GetNode( iE );
328 if ( nE && elem->IsQuadratic() ) { // find medium node between nV1 and nE
329 if ( Abs( iV1 - iE ) == 1 )
330 nE = elem->GetNode( Min ( iV1, iE ) + nbNodes );
332 nE = elem->GetNode( elem->NbNodes() - 1 );
337 RETURN_BAD_RESULT("No new node found on V1");
339 RETURN_BAD_RESULT("new node on edge not found");
341 // Get the whole free border of a face
342 list< const SMDS_MeshNode* > bordNodes;
343 list< const SMDS_MeshElement* > bordFaces;
344 if ( !SMESH_MeshEditor::FindFreeBorder (nV1, nE, nV1, bordNodes, bordFaces ))
345 RETURN_BAD_RESULT("free border of a face not found by nodes " <<
346 nV1->GetID() << " " << nE->GetID() );
348 // Insert nodes of the free border to the map until node on V2 encountered
349 SMESHDS_SubMesh* v2smDS = smV2->GetSubMeshDS();
350 list< const SMDS_MeshNode* >::iterator bordIt = bordNodes.begin();
351 bordIt++; // skip nV1
352 for ( ; bordIt != bordNodes.end(); ++bordIt ) {
353 const SMDS_MeshNode* node = *bordIt;
354 if ( v2smDS->Contains( node ))
356 if ( node->GetPosition()->GetTypeOfPosition() != SMDS_TOP_EDGE )
357 RETURN_BAD_RESULT("Bad node position type: node " << node->GetID() <<
358 " pos type " << node->GetPosition()->GetTypeOfPosition());
359 const SMDS_EdgePosition* pos =
360 static_cast<const SMDS_EdgePosition*>(node->GetPosition());
361 u2nodes.insert( make_pair( pos->GetUParameter(), node ));
362 seamNodes.insert( node );
364 if ( u2nodes.size() != seamNodes.size() )
365 RETURN_BAD_RESULT("Bad node params on edge " << sm->GetId() <<
366 ", " << u2nodes.size() << " != " << seamNodes.size() );
371 RETURN_BAD_RESULT ("Unexpected submesh type");
373 } // bool getBoundaryNodes()
375 //================================================================================
377 * \brief Preform projection in case if tgtFace.IsPartner( srcFace ) and in case
378 * if projection by transformation is possible
380 //================================================================================
382 bool projectPartner(const TopoDS_Face& tgtFace,
383 const TopoDS_Face& srcFace,
384 SMESH_Mesh * tgtMesh,
385 SMESH_Mesh * srcMesh,
386 const TAssocTool::TShapeShapeMap& shape2ShapeMap)
388 SMESHDS_Mesh* tgtMeshDS = tgtMesh->GetMeshDS();
389 SMESHDS_Mesh* srcMeshDS = srcMesh->GetMeshDS();
391 const double tol = 1.e-7 * srcMeshDS->getMaxDim();
393 gp_Trsf trsf; // transformation to get location of target nodes from source ones
394 if ( tgtFace.IsPartner( srcFace ))
396 gp_Trsf srcTrsf = srcFace.Location();
397 gp_Trsf tgtTrsf = tgtFace.Location();
398 trsf = srcTrsf.Inverted() * tgtTrsf;
402 // Try to find the transformation
404 // make any local coord systems of src and tgt faces
405 vector<gp_Pnt> srcPP, tgtPP; // 3 points on face boundaries to make axes of CS
406 int tgtNbVert = SMESH_MesherHelper::Count( tgtFace, TopAbs_VERTEX, /*ignoreSame=*/true );
407 int srcNbVert = SMESH_MesherHelper::Count( srcFace, TopAbs_VERTEX, /*ignoreSame=*/true );
408 SMESH_subMesh * srcSM = srcMesh->GetSubMesh( srcFace );
409 SMESH_subMeshIteratorPtr smIt = srcSM->getDependsOnIterator(/*includeSelf=*/false,false);
410 srcSM = smIt->next(); // sm of a vertex
411 while ( smIt->more() && srcPP.size() < 3 )
413 srcSM = smIt->next();
414 SMESHDS_SubMesh* srcSmds = srcSM->GetSubMeshDS();
415 if ( !srcSmds ) continue;
416 SMDS_NodeIteratorPtr nIt = srcSmds->GetNodes();
417 while ( nIt->more() )
419 SMESH_TNodeXYZ p ( nIt->next());
421 switch ( srcPP.size() )
423 case 0: pOK = true; break;
425 case 1: pOK = ( srcPP[0].SquareDistance( p ) > 10*tol ); break;
429 gp_Vec p0p1( srcPP[0], srcPP[1] ), p0p( srcPP[0], p );
430 // pOK = !p0p1.IsParallel( p0p, tol );
431 pOK = !p0p1.IsParallel( p0p, 3.14/20 ); // angle min 18 degrees
438 // find corresponding point on target shape
441 const TopoDS_Shape& tgtShape = shape2ShapeMap( srcSM->GetSubShape(), /*isSrc=*/true );
442 if ( tgtShape.ShapeType() == TopAbs_VERTEX )
444 tgtP = BRep_Tool::Pnt( TopoDS::Vertex( tgtShape ));
445 if ( srcNbVert == tgtNbVert || tgtPP.empty() )
448 pOK = (( tgtP.Distance( tgtPP[0] ) > tol*tol ) &&
449 ( tgtPP.size() == 1 || tgtP.Distance( tgtPP[1] ) > tol*tol ));
450 //cout << "V - nS " << p._node->GetID() << " - nT " << SMESH_Algo::VertexNode(TopoDS::Vertex( tgtShape),tgtMeshDS)->GetID() << endl;
452 else if ( tgtPP.size() > 0 )
454 if ( SMESHDS_SubMesh* tgtSmds = tgtMeshDS->MeshElements( tgtShape ))
456 double srcDist = srcPP[0].Distance( p );
457 double eTol = BRep_Tool::Tolerance( TopoDS::Edge( tgtShape ));
458 if (eTol < tol) eTol = tol;
459 SMDS_NodeIteratorPtr nItT = tgtSmds->GetNodes();
460 while ( nItT->more() && !pOK )
462 const SMDS_MeshNode* n = nItT->next();
463 tgtP = SMESH_TNodeXYZ( n );
464 pOK = ( fabs( srcDist - tgtPP[0].Distance( tgtP )) < 2*eTol );
465 //cout << "E - nS " << p._node->GetID() << " - nT " << n->GetID()<< " OK - " << pOK<< " " << fabs( srcDist - tgtPP[0].Distance( tgtP ))<< " tol " << eTol<< endl;
472 srcPP.push_back( p );
473 tgtPP.push_back( tgtP );
476 if ( srcPP.size() != 3 )
479 // make transformation
480 gp_Trsf fromTgtCS, toSrcCS; // from/to global CS
481 gp_Ax2 srcCS( srcPP[0], gp_Vec( srcPP[0], srcPP[1] ), gp_Vec( srcPP[0], srcPP[2]));
482 gp_Ax2 tgtCS( tgtPP[0], gp_Vec( tgtPP[0], tgtPP[1] ), gp_Vec( tgtPP[0], tgtPP[2]));
483 toSrcCS .SetTransformation( gp_Ax3( srcCS ));
484 fromTgtCS.SetTransformation( gp_Ax3( tgtCS ));
487 trsf = fromTgtCS * toSrcCS;
490 // Fill map of src to tgt nodes with nodes on edges
492 map<const SMDS_MeshNode* , const SMDS_MeshNode*> src2tgtNodes;
493 map<const SMDS_MeshNode* , const SMDS_MeshNode*>::iterator srcN_tgtN;
495 bool tgtEdgesMeshed = false;
496 for ( TopExp_Explorer srcExp( srcFace, TopAbs_EDGE); srcExp.More(); srcExp.Next() )
498 const TopoDS_Shape& srcEdge = srcExp.Current();
499 const TopoDS_Shape& tgtEdge = shape2ShapeMap( srcEdge, /*isSrc=*/true );
500 tgtEdgesMeshed != tgtMesh->GetSubMesh( tgtEdge )->IsEmpty();
502 if ( srcMesh->GetSubMesh( srcEdge )->IsEmpty() ||
503 tgtMesh->GetSubMesh( tgtEdge )->IsEmpty() )
506 map< double, const SMDS_MeshNode* > srcNodes, tgtNodes;
507 if (( ! SMESH_Algo::GetSortedNodesOnEdge( srcMeshDS,
508 TopoDS::Edge( srcEdge ),
509 /*ignoreMediumNodes = */true,
512 ( ! SMESH_Algo::GetSortedNodesOnEdge( tgtMeshDS,
513 TopoDS::Edge( tgtEdge ),
514 /*ignoreMediumNodes = */true,
517 (( srcNodes.size() != tgtNodes.size() ) && tgtNodes.size() > 0 )
521 if ( !tgtEdge.IsPartner( srcEdge ))
523 if ( tgtNodes.empty() )
525 // check that transformation is OK by three nodes
526 gp_Pnt p0S = SMESH_TNodeXYZ( (srcNodes.begin()) ->second);
527 gp_Pnt p1S = SMESH_TNodeXYZ( (srcNodes.rbegin()) ->second);
528 gp_Pnt p2S = SMESH_TNodeXYZ( (++srcNodes.begin())->second);
530 gp_Pnt p0T = SMESH_TNodeXYZ( (tgtNodes.begin()) ->second);
531 gp_Pnt p1T = SMESH_TNodeXYZ( (tgtNodes.rbegin()) ->second);
532 gp_Pnt p2T = SMESH_TNodeXYZ( (++tgtNodes.begin())->second);
534 // transform source points, they must coincide with target ones
535 if ( p0T.SquareDistance( p0S.Transformed( trsf )) > tol ||
536 p1T.SquareDistance( p1S.Transformed( trsf )) > tol ||
537 p2T.SquareDistance( p2S.Transformed( trsf )) > tol )
539 //cout << "KO trsf, 3 dist: "
540 //<< p0T.SquareDistance( p0S.Transformed( trsf ))<< ", "
541 //<< p1T.SquareDistance( p1S.Transformed( trsf ))<< ", "
542 //<< p2T.SquareDistance( p2S.Transformed( trsf ))<< ", "<<endl;
546 if ( !tgtNodes.empty() )
548 map< double, const SMDS_MeshNode* >::iterator u_tn = tgtNodes.begin();
549 map< double, const SMDS_MeshNode* >::iterator u_sn = srcNodes.begin();
550 for ( ; u_tn != tgtNodes.end(); ++u_tn, ++u_sn)
551 src2tgtNodes.insert( make_pair( u_sn->second, u_tn->second ));
554 // check nodes on VERTEXes for a case of not meshes EDGEs
555 for ( TopExp_Explorer srcExp( srcFace, TopAbs_VERTEX); srcExp.More(); srcExp.Next() )
557 const TopoDS_Shape& srcV = srcExp.Current();
558 const TopoDS_Shape& tgtV = shape2ShapeMap( srcV, /*isSrc=*/true );
559 const SMDS_MeshNode* srcN = SMESH_Algo::VertexNode( TopoDS::Vertex( srcV ), srcMeshDS );
560 const SMDS_MeshNode* tgtN = SMESH_Algo::VertexNode( TopoDS::Vertex( tgtV ), tgtMeshDS );
563 if ( !tgtN || tgtV.ShapeType() != TopAbs_VERTEX )
566 if ( !tgtV.IsPartner( srcV ))
568 // check that transformation is OK by three nodes
569 gp_Pnt p0S = SMESH_TNodeXYZ( srcN );
570 gp_Pnt p0T = SMESH_TNodeXYZ( tgtN );
571 if ( p0T.SquareDistance( p0S.Transformed( trsf )) > tol )
576 src2tgtNodes.insert( make_pair( srcN, tgtN ));
582 // prepare the helper to adding quadratic elements if necessary
583 SMESH_MesherHelper helper( *tgtMesh );
584 helper.SetSubShape( tgtFace );
585 helper.IsQuadraticSubMesh( tgtFace );
587 SMESHDS_SubMesh* srcSubDS = srcMeshDS->MeshElements( srcFace );
588 if ( !tgtEdgesMeshed && srcSubDS->NbElements() )
589 helper.SetIsQuadratic( srcSubDS->GetElements()->next()->IsQuadratic() );
591 SMESH_MesherHelper srcHelper( *srcMesh );
592 srcHelper.SetSubShape( srcFace );
594 const SMDS_MeshNode* nullNode = 0;
596 // indices of nodes to create properly oriented faces
597 bool isReverse = ( trsf.Form() != gp_Identity );
598 int tri1 = 1, tri2 = 2, quad1 = 1, quad3 = 3;
600 std::swap( tri1, tri2 ), std::swap( quad1, quad3 );
602 SMDS_ElemIteratorPtr elemIt = srcSubDS->GetElements();
603 vector< const SMDS_MeshNode* > tgtNodes;
604 while ( elemIt->more() ) // loop on all mesh faces on srcFace
606 const SMDS_MeshElement* elem = elemIt->next();
607 const int nbN = elem->NbCornerNodes();
608 tgtNodes.resize( nbN );
609 helper.SetElementsOnShape( false );
610 for ( int i = 0; i < nbN; ++i ) // loop on nodes of the source element
612 const SMDS_MeshNode* srcNode = elem->GetNode(i);
613 srcN_tgtN = src2tgtNodes.insert( make_pair( srcNode, nullNode )).first;
614 if ( srcN_tgtN->second == nullNode )
617 gp_Pnt tgtP = gp_Pnt( SMESH_TNodeXYZ( srcNode )).Transformed( trsf );
618 SMDS_MeshNode* n = helper.AddNode( tgtP.X(), tgtP.Y(), tgtP.Z() );
619 srcN_tgtN->second = n;
620 switch ( srcNode->GetPosition()->GetTypeOfPosition() )
624 gp_Pnt2d srcUV = srcHelper.GetNodeUV( srcFace, srcNode );
625 tgtMeshDS->SetNodeOnFace( n, helper.GetSubShapeID(), srcUV.X(), srcUV.Y() );
630 const TopoDS_Shape & srcE = srcMeshDS->IndexToShape( srcNode->getshapeId() );
631 const TopoDS_Shape & tgtE = shape2ShapeMap( srcE, /*isSrc=*/true );
632 double srcU = srcHelper.GetNodeU( TopoDS::Edge( srcE ), srcNode );
633 tgtMeshDS->SetNodeOnEdge( n, TopoDS::Edge( tgtE ), srcU );
636 case SMDS_TOP_VERTEX:
638 const TopoDS_Shape & srcV = srcMeshDS->IndexToShape( srcNode->getshapeId() );
639 const TopoDS_Shape & tgtV = shape2ShapeMap( srcV, /*isSrc=*/true );
640 tgtMeshDS->SetNodeOnVertex( n, TopoDS::Vertex( tgtV ));
646 tgtNodes[i] = srcN_tgtN->second;
649 helper.SetElementsOnShape( true );
652 case 3: helper.AddFace(tgtNodes[0], tgtNodes[tri1], tgtNodes[tri2]); break;
653 case 4: helper.AddFace(tgtNodes[0], tgtNodes[quad1], tgtNodes[2], tgtNodes[quad3]); break;
655 if ( isReverse ) std::reverse( tgtNodes.begin(), tgtNodes.end() );
656 helper.AddPolygonalFace( tgtNodes );
660 // check node positions
662 if ( !tgtFace.IsPartner( srcFace ) )
665 const double tol2d = 1e-12;
666 srcN_tgtN = src2tgtNodes.begin();
667 for ( ; srcN_tgtN != src2tgtNodes.end(); ++srcN_tgtN )
669 const SMDS_MeshNode* n = srcN_tgtN->second;
670 switch ( n->GetPosition()->GetTypeOfPosition() )
674 gp_XY uv = helper.GetNodeUV( tgtFace, n ), uvBis = uv;
675 if (( helper.CheckNodeUV( tgtFace, n, uv, tol )) &&
676 (( uv - uvBis ).SquareModulus() < tol2d ) &&
685 const TopoDS_Edge & tgtE = TopoDS::Edge( tgtMeshDS->IndexToShape( n->getshapeId() ));
686 double u = helper.GetNodeU( tgtE, n ), uBis = u;
687 if (( !helper.CheckNodeU( tgtE, n, u, tol )) ||
688 (( u - uBis ) < tol2d ))
699 } // bool projectPartner()
701 //================================================================================
703 * \brief Check if two consecutive EDGEs are connected in 2D
704 * \param [in] E1 - a well oriented non-seam EDGE
705 * \param [in] E2 - a possibly well oriented seam EDGE
706 * \param [in] F - a FACE
707 * \return bool - result
709 //================================================================================
711 bool are2dConnected( const TopoDS_Edge & E1,
712 const TopoDS_Edge & E2,
713 const TopoDS_Face & F )
716 Handle(Geom2d_Curve) c1 = BRep_Tool::CurveOnSurface( E1, F, f, l );
717 gp_Pnt2d uvLast1 = c1->Value( E1.Orientation() == TopAbs_REVERSED ? f : l );
719 Handle(Geom2d_Curve) c2 = BRep_Tool::CurveOnSurface( E2, F, f, l );
720 gp_Pnt2d uvFirst2 = c2->Value( f );
721 gp_Pnt2d uvLast2 = c2->Value( l );
722 double tol2 = 1e-5 * uvLast2.SquareDistance( uvFirst2 );
724 return (( uvLast1.SquareDistance( uvFirst2 ) < tol2 ) ||
725 ( uvLast1.SquareDistance( uvLast2 ) < tol2 ));
728 //================================================================================
730 * \brief Preform projection in case if the faces are similar in 2D space
732 //================================================================================
734 bool projectBy2DSimilarity(const TopoDS_Face& tgtFace,
735 const TopoDS_Face& srcFace,
736 SMESH_Mesh * tgtMesh,
737 SMESH_Mesh * srcMesh,
738 const TAssocTool::TShapeShapeMap& shape2ShapeMap,
739 const bool is1DComputed)
743 // get ordered src EDGEs
745 TSideVector srcWires =
746 StdMeshers_FaceSide::GetFaceWires( srcFace, *srcMesh,/*ignoreMediumNodes = */false, err);
747 if ( err && !err->IsOK() )
750 // make corresponding sequence of tgt EDGEs
751 TSideVector tgtWires( srcWires.size() );
752 for ( size_t iW = 0; iW < srcWires.size(); ++iW )
754 list< TopoDS_Edge > tgtEdges;
755 StdMeshers_FaceSidePtr srcWire = srcWires[iW];
756 TopTools_IndexedMapOfShape edgeMap; // to detect seam edges
757 for ( int iE = 0; iE < srcWire->NbEdges(); ++iE )
759 TopoDS_Edge E = TopoDS::Edge( shape2ShapeMap( srcWire->Edge( iE ), /*isSrc=*/true));
760 // reverse a seam edge encountered for the second time
761 const int index = edgeMap.Add( E );
762 if ( index < edgeMap.Extent() ) // E is a seam
764 // check which of edges to reverse, E or one already being in tgtEdges
765 if ( are2dConnected( tgtEdges.back(), E, tgtFace ))
767 list< TopoDS_Edge >::iterator eIt = tgtEdges.begin();
768 std::advance( eIt, index-1 );
776 tgtEdges.push_back( E );
778 tgtWires[ iW ].reset( new StdMeshers_FaceSide( tgtFace, tgtEdges, tgtMesh,
779 /*theIsForward = */ true,
780 /*theIgnoreMediumNodes = */false));
782 srcWires[iW]->GetUVPtStruct().size() !=
783 tgtWires[iW]->GetUVPtStruct().size())
787 // 2) Find transformation
791 // get 2 pairs of corresponding UVs
792 gp_Pnt2d srcP0 = srcWires[0]->Value2d(0.0);
793 gp_Pnt2d srcP1 = srcWires[0]->Value2d(0.333);
794 gp_Pnt2d tgtP0 = tgtWires[0]->Value2d(0.0);
795 gp_Pnt2d tgtP1 = tgtWires[0]->Value2d(0.333);
797 // make transformation
798 gp_Trsf2d fromTgtCS, toSrcCS; // from/to global CS
799 gp_Ax2d srcCS( srcP0, gp_Vec2d( srcP0, srcP1 ));
800 gp_Ax2d tgtCS( tgtP0, gp_Vec2d( tgtP0, tgtP1 ));
801 toSrcCS .SetTransformation( srcCS );
802 fromTgtCS.SetTransformation( tgtCS );
805 trsf = fromTgtCS * toSrcCS;
807 // check transformation
808 const double tol = 1e-5 * gp_Vec2d( srcP0, srcP1 ).Magnitude();
809 for ( double u = 0.12; u < 1.; u += 0.1 )
811 gp_Pnt2d srcUV = srcWires[0]->Value2d( u );
812 gp_Pnt2d tgtUV = tgtWires[0]->Value2d( u );
813 gp_Pnt2d tgtUV2 = srcUV.Transformed( trsf );
814 if ( tgtUV.Distance( tgtUV2 ) > tol )
821 typedef map<const SMDS_MeshNode* , const SMDS_MeshNode*, TIDCompare> TN2NMap;
822 TN2NMap src2tgtNodes;
823 TN2NMap::iterator srcN_tgtN;
825 // fill src2tgtNodes in with nodes on EDGEs
826 for ( unsigned iW = 0; iW < srcWires.size(); ++iW )
829 const vector<UVPtStruct>& srcUVs = srcWires[iW]->GetUVPtStruct();
830 const vector<UVPtStruct>& tgtUVs = tgtWires[iW]->GetUVPtStruct();
831 for ( unsigned i = 0; i < srcUVs.size(); ++i )
832 src2tgtNodes.insert( make_pair( srcUVs[i].node, tgtUVs[i].node ));
836 for ( int iE = 0; iE < srcWires[iW]->NbEdges(); ++iE )
838 TopoDS_Vertex srcV = srcWires[iW]->FirstVertex(iE);
839 TopoDS_Vertex tgtV = tgtWires[iW]->FirstVertex(iE);
840 const SMDS_MeshNode* srcNode = SMESH_Algo::VertexNode( srcV, srcMesh->GetMeshDS() );
841 const SMDS_MeshNode* tgtNode = SMESH_Algo::VertexNode( tgtV, tgtMesh->GetMeshDS() );
842 if ( tgtNode && srcNode )
843 src2tgtNodes.insert( make_pair( srcNode, tgtNode ));
849 SMESHDS_SubMesh* srcSubDS = srcMesh->GetMeshDS()->MeshElements( srcFace );
851 SMESH_MesherHelper helper( *tgtMesh );
852 helper.SetSubShape( tgtFace );
854 helper.IsQuadraticSubMesh( tgtFace );
856 helper.SetIsQuadratic( srcSubDS->GetElements()->next()->IsQuadratic() );
857 helper.SetElementsOnShape( true );
858 Handle(Geom_Surface) tgtSurface = BRep_Tool::Surface( tgtFace );
859 SMESHDS_Mesh* tgtMeshDS = tgtMesh->GetMeshDS();
861 SMESH_MesherHelper srcHelper( *srcMesh );
862 srcHelper.SetSubShape( srcFace );
864 const SMDS_MeshNode* nullNode = 0;
866 SMDS_ElemIteratorPtr elemIt = srcSubDS->GetElements();
867 vector< const SMDS_MeshNode* > tgtNodes;
869 while ( elemIt->more() ) // loop on all mesh faces on srcFace
871 const SMDS_MeshElement* elem = elemIt->next();
872 const int nbN = elem->NbCornerNodes();
873 tgtNodes.resize( nbN );
874 for ( int i = 0; i < nbN; ++i ) // loop on nodes of the source element
876 const SMDS_MeshNode* srcNode = elem->GetNode(i);
877 srcN_tgtN = src2tgtNodes.insert( make_pair( srcNode, nullNode )).first;
878 if ( srcN_tgtN->second == nullNode )
881 gp_Pnt2d srcUV = srcHelper.GetNodeUV( srcFace, srcNode,
882 elem->GetNode( helper.WrapIndex(i+1,nbN)), &uvOK);
883 gp_Pnt2d tgtUV = srcUV.Transformed( trsf );
884 gp_Pnt tgtP = tgtSurface->Value( tgtUV.X(), tgtUV.Y() );
885 SMDS_MeshNode* n = tgtMeshDS->AddNode( tgtP.X(), tgtP.Y(), tgtP.Z() );
886 switch ( srcNode->GetPosition()->GetTypeOfPosition() )
888 case SMDS_TOP_FACE: {
889 tgtMeshDS->SetNodeOnFace( n, helper.GetSubShapeID(), tgtUV.X(), tgtUV.Y() );
892 case SMDS_TOP_EDGE: {
893 TopoDS_Shape srcEdge = srcHelper.GetSubShapeByNode( srcNode, srcHelper.GetMeshDS() );
894 TopoDS_Edge tgtEdge = TopoDS::Edge( shape2ShapeMap( srcEdge, /*isSrc=*/true ));
895 tgtMeshDS->SetNodeOnEdge( n, TopoDS::Edge( tgtEdge ));
896 double U = srcHelper.GetNodeU( TopoDS::Edge( srcEdge ), srcNode );
897 helper.CheckNodeU( tgtEdge, n, U, Precision::PConfusion());
898 n->SetPosition(SMDS_PositionPtr(new SMDS_EdgePosition( U )));
901 case SMDS_TOP_VERTEX: {
902 TopoDS_Shape srcV = srcHelper.GetSubShapeByNode( srcNode, srcHelper.GetMeshDS() );
903 TopoDS_Shape tgtV = shape2ShapeMap( srcV, /*isSrc=*/true );
904 tgtMeshDS->SetNodeOnVertex( n, TopoDS::Vertex( tgtV ));
908 srcN_tgtN->second = n;
910 tgtNodes[i] = srcN_tgtN->second;
912 // create a new face (with reversed orientation)
915 case 3: helper.AddFace(tgtNodes[0], tgtNodes[2], tgtNodes[1]); break;
916 case 4: helper.AddFace(tgtNodes[0], tgtNodes[3], tgtNodes[2], tgtNodes[1]); break;
921 } // bool projectBy2DSimilarity(...)
926 //=======================================================================
929 //=======================================================================
931 bool StdMeshers_Projection_2D::Compute(SMESH_Mesh& theMesh, const TopoDS_Shape& theShape)
933 MESSAGE("Projection_2D Compute");
937 SMESH_Mesh * srcMesh = _sourceHypo->GetSourceMesh();
938 SMESH_Mesh * tgtMesh = & theMesh;
942 SMESHDS_Mesh * meshDS = theMesh.GetMeshDS();
944 // ---------------------------
945 // Make sub-shapes association
946 // ---------------------------
948 TopoDS_Face tgtFace = TopoDS::Face( theShape.Oriented(TopAbs_FORWARD));
949 TopoDS_Shape srcShape = _sourceHypo->GetSourceFace().Oriented(TopAbs_FORWARD);
951 TAssocTool::TShapeShapeMap shape2ShapeMap;
952 TAssocTool::InitVertexAssociation( _sourceHypo, shape2ShapeMap );
953 if ( !TAssocTool::FindSubShapeAssociation( tgtFace, tgtMesh, srcShape, srcMesh,
955 !shape2ShapeMap.IsBound( tgtFace ))
957 if ( srcShape.ShapeType() == TopAbs_FACE )
959 int nbE1 = SMESH_MesherHelper::Count( tgtFace, TopAbs_EDGE, /*ignoreSame=*/true );
960 int nbE2 = SMESH_MesherHelper::Count( srcShape, TopAbs_EDGE, /*ignoreSame=*/true );
962 return error(COMPERR_BAD_SHAPE,
963 SMESH_Comment("Different number of edges in source and target faces: ")
964 << nbE2 << " and " << nbE1 );
966 return error(COMPERR_BAD_SHAPE,"Topology of source and target faces seems different" );
968 TopoDS_Face srcFace = TopoDS::Face( shape2ShapeMap( tgtFace ).Oriented(TopAbs_FORWARD));
970 // ----------------------------------------------
971 // Assure that mesh on a source Face is computed
972 // ----------------------------------------------
974 SMESH_subMesh* srcSubMesh = srcMesh->GetSubMesh( srcFace );
975 SMESH_subMesh* tgtSubMesh = tgtMesh->GetSubMesh( tgtFace );
978 if ( tgtMesh == srcMesh ) {
979 if ( !TAssocTool::MakeComputed( srcSubMesh ))
980 srcMeshError = TAssocTool::SourceNotComputedError( srcSubMesh, this );
983 if ( !srcSubMesh->IsMeshComputed() )
984 srcMeshError = TAssocTool::SourceNotComputedError();
986 if ( !srcMeshError.empty() )
987 return error(COMPERR_BAD_INPUT_MESH, srcMeshError );
993 // find out if EDGEs are meshed or not
994 bool is1DComputed = false;
995 SMESH_subMeshIteratorPtr smIt = tgtSubMesh->getDependsOnIterator(/*includeSelf=*/false,
996 /*complexShapeFirst=*/true);
997 while ( smIt->more() && !is1DComputed )
999 SMESH_subMesh* sm = smIt->next();
1000 if ( sm->GetSubShape().ShapeType() == TopAbs_EDGE )
1001 is1DComputed = sm->IsMeshComputed();
1008 // try to project from the same face with different location
1009 done = projectPartner( tgtFace, srcFace, tgtMesh, srcMesh, shape2ShapeMap );
1013 // projection in case if the faces are similar in 2D space
1014 done = projectBy2DSimilarity( tgtFace, srcFace, tgtMesh, srcMesh, shape2ShapeMap, is1DComputed);
1017 SMESH_MesherHelper helper( theMesh );
1018 helper.SetSubShape( tgtFace );
1022 // --------------------
1023 // Prepare to mapping
1024 // --------------------
1026 // Check if node projection to a face is needed
1028 SMDS_ElemIteratorPtr faceIt = srcSubMesh->GetSubMeshDS()->GetElements();
1029 int nbFaceNodes = 0;
1030 for ( ; nbFaceNodes < 3 && faceIt->more(); ) {
1031 const SMDS_MeshElement* face = faceIt->next();
1032 SMDS_ElemIteratorPtr nodeIt = face->nodesIterator();
1033 while ( nodeIt->more() ) {
1034 const SMDS_MeshNode* node = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
1035 if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE ) {
1037 uvBox.Add( helper.GetNodeUV( srcFace, node ));
1041 const bool toProjectNodes =
1042 ( nbFaceNodes > 0 && ( uvBox.IsVoid() || uvBox.SquareExtent() < DBL_MIN ));
1044 // Find the corresponding source and target vertex
1045 // and <theReverse> flag needed to call mapper.Apply()
1047 TopoDS_Vertex srcV1, tgtV1;
1048 bool reverse = false;
1050 if ( _sourceHypo->HasVertexAssociation() ) {
1051 srcV1 = _sourceHypo->GetSourceVertex(1);
1052 tgtV1 = _sourceHypo->GetTargetVertex(1);
1054 srcV1 = TopoDS::Vertex( TopExp_Explorer( srcFace, TopAbs_VERTEX ).Current() );
1055 tgtV1 = TopoDS::Vertex( shape2ShapeMap( srcV1, /*isSrc=*/true ));
1057 list< TopoDS_Edge > tgtEdges, srcEdges;
1058 list< int > nbEdgesInWires;
1059 SMESH_Block::GetOrderedEdges( tgtFace, tgtEdges, nbEdgesInWires, tgtV1 );
1060 SMESH_Block::GetOrderedEdges( srcFace, srcEdges, nbEdgesInWires, srcV1 );
1062 if ( nbEdgesInWires.front() > 1 ) // possible to find out orientation
1064 TopoDS_Edge srcE1 = srcEdges.front(), tgtE1 = tgtEdges.front();
1065 TopoDS_Shape srcE1bis = shape2ShapeMap( tgtE1 );
1066 reverse = ( ! srcE1.IsSame( srcE1bis ));
1068 _sourceHypo->HasVertexAssociation() &&
1069 nbEdgesInWires.front() > 2 &&
1070 helper.IsRealSeam( tgtEdges.front() ))
1072 // projection to a face with seam EDGE; pb is that GetOrderedEdges()
1073 // always puts a seam EDGE first (if possible) and as a result
1074 // we can't use only theReverse flag to correctly associate source
1075 // and target faces in the mapper. Thus we select srcV1 so that
1076 // GetOrderedEdges() to return EDGEs in a needed order
1077 list< TopoDS_Edge >::iterator edge = srcEdges.begin();
1078 for ( ; edge != srcEdges.end(); ++edge ) {
1079 if ( srcE1bis.IsSame( *edge )) {
1080 srcV1 = helper.IthVertex( 0, *edge );
1086 else if ( nbEdgesInWires.front() == 1 )
1088 // TODO::Compare orientation of curves in a sole edge
1089 //RETURN_BAD_RESULT("Not implemented case");
1093 RETURN_BAD_RESULT("Bad result from SMESH_Block::GetOrderedEdges()");
1096 // Load pattern from the source face
1097 SMESH_Pattern mapper;
1098 mapper.Load( srcMesh, srcFace, toProjectNodes, srcV1 );
1099 if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
1100 return error(COMPERR_BAD_INPUT_MESH,"Can't load mesh pattern from the source face");
1102 // --------------------
1103 // Perform 2D mapping
1104 // --------------------
1106 // Compute mesh on a target face
1108 mapper.Apply( tgtFace, tgtV1, reverse );
1109 if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
1110 return error("Can't apply source mesh pattern to the face");
1114 const bool toCreatePolygons = false, toCreatePolyedrs = false;
1115 mapper.MakeMesh( tgtMesh, toCreatePolygons, toCreatePolyedrs );
1116 if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
1117 return error("Can't make mesh by source mesh pattern");
1119 // it will remove mesh built by pattern mapper on edges and vertices
1121 MeshCleaner cleaner( tgtSubMesh );
1123 // -------------------------------------------------------------------------
1124 // mapper doesn't take care of nodes already existing on edges and vertices,
1125 // so we must merge nodes created by it with existing ones
1126 // -------------------------------------------------------------------------
1128 SMESH_MeshEditor::TListOfListOfNodes groupsOfNodes;
1130 // Make groups of nodes to merge
1132 // loop on EDGE and VERTEX sub-meshes of a target FACE
1133 smIt = tgtSubMesh->getDependsOnIterator(/*includeSelf=*/false,/*complexShapeFirst=*/false);
1134 while ( smIt->more() )
1136 SMESH_subMesh* sm = smIt->next();
1137 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
1138 if ( !smDS || smDS->NbNodes() == 0 )
1140 //if ( !is1DComputed && sm->GetSubShape().ShapeType() == TopAbs_EDGE )
1143 if ( helper.IsDegenShape( sm->GetId() ) ) // to merge all nodes on degenerated
1145 if ( sm->GetSubShape().ShapeType() == TopAbs_EDGE )
1147 groupsOfNodes.push_back( list< const SMDS_MeshNode* >() );
1148 SMESH_subMeshIteratorPtr smDegenIt
1149 = sm->getDependsOnIterator(/*includeSelf=*/true,/*complexShapeFirst=*/false);
1150 while ( smDegenIt->more() )
1151 if (( smDS = smDegenIt->next()->GetSubMeshDS() ))
1153 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
1154 while ( nIt->more() )
1155 groupsOfNodes.back().push_back( nIt->next() );
1158 continue; // do not treat sm of degen VERTEX
1161 // Sort new and old nodes of a submesh separately
1163 bool isSeam = helper.IsRealSeam( sm->GetId() );
1165 enum { NEW_NODES = 0, OLD_NODES };
1166 map< double, const SMDS_MeshNode* > u2nodesMaps[2], u2nodesOnSeam;
1167 map< double, const SMDS_MeshNode* >::iterator u_oldNode, u_newNode, u_newOnSeam, newEnd;
1168 set< const SMDS_MeshNode* > seamNodes;
1170 // mapper changed, no more "mapper puts on a seam edge nodes from 2 edges"
1171 if ( isSeam && ! getBoundaryNodes ( sm, tgtFace, u2nodesOnSeam, seamNodes ))
1172 ;//RETURN_BAD_RESULT("getBoundaryNodes() failed");
1174 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
1175 while ( nIt->more() )
1177 const SMDS_MeshNode* node = nIt->next();
1178 bool isOld = isOldNode( node );
1180 if ( !isOld && isSeam ) { // new node on a seam edge
1181 if ( seamNodes.count( node ) )
1182 continue; // node is already in the map
1185 // sort nodes on edges by their position
1186 map< double, const SMDS_MeshNode* > & pos2nodes = u2nodesMaps[isOld ? OLD_NODES : NEW_NODES];
1187 switch ( node->GetPosition()->GetTypeOfPosition() )
1189 case SMDS_TOP_VERTEX: {
1190 if ( !is1DComputed && !pos2nodes.empty() )
1191 u2nodesMaps[isOld ? NEW_NODES : OLD_NODES].insert( make_pair( 0, node ));
1193 pos2nodes.insert( make_pair( 0, node ));
1196 case SMDS_TOP_EDGE: {
1197 const SMDS_EdgePosition* pos =
1198 static_cast<const SMDS_EdgePosition*>(node->GetPosition());
1199 pos2nodes.insert( make_pair( pos->GetUParameter(), node ));
1203 RETURN_BAD_RESULT("Wrong node position type: "<<
1204 node->GetPosition()->GetTypeOfPosition());
1207 const bool mergeNewToOld =
1208 ( u2nodesMaps[ NEW_NODES ].size() == u2nodesMaps[ OLD_NODES ].size() );
1209 const bool mergeSeamToNew =
1210 ( u2nodesMaps[ NEW_NODES ].size() == u2nodesOnSeam.size() );
1212 if ( !mergeNewToOld )
1213 if ( u2nodesMaps[ NEW_NODES ].size() > 0 &&
1214 u2nodesMaps[ OLD_NODES ].size() > 0 )
1216 u_oldNode = u2nodesMaps[ OLD_NODES ].begin();
1217 newEnd = u2nodesMaps[ OLD_NODES ].end();
1218 for ( ; u_oldNode != newEnd; ++u_oldNode )
1219 SMESH_Algo::addBadInputElement( u_oldNode->second );
1220 return error( COMPERR_BAD_INPUT_MESH,
1221 SMESH_Comment( "Existing mesh mismatches the projected 2D mesh on " )
1222 << ( sm->GetSubShape().ShapeType() == TopAbs_EDGE ? "edge" : "vertex" )
1223 << " #" << sm->GetId() );
1225 if ( isSeam && !mergeSeamToNew ) {
1226 const TopoDS_Shape& seam = sm->GetSubShape();
1227 if ( u2nodesMaps[ NEW_NODES ].size() > 0 &&
1228 u2nodesOnSeam.size() > 0 &&
1229 seam.ShapeType() == TopAbs_EDGE )
1231 int nbE1 = SMESH_MesherHelper::Count( tgtFace, TopAbs_EDGE, /*ignoreSame=*/true );
1232 int nbE2 = SMESH_MesherHelper::Count( srcFace, TopAbs_EDGE, /*ignoreSame=*/true );
1233 if ( nbE1 != nbE2 ) // 2 EDGEs are mapped to a seam EDGE
1235 // find the 2 EDGEs of srcFace
1236 TopTools_DataMapIteratorOfDataMapOfShapeShape src2tgtIt( shape2ShapeMap._map2to1 );
1237 for ( ; src2tgtIt.More(); src2tgtIt.Next() )
1238 if ( seam.IsSame( src2tgtIt.Value() ))
1239 SMESH_Algo::addBadInputElements
1240 ( srcMesh->GetMeshDS()->MeshElements( src2tgtIt.Key() ));
1241 return error( COMPERR_BAD_INPUT_MESH,
1242 "Different number of nodes on two edges projected to a seam edge" );
1247 // Make groups of nodes to merge
1249 u_oldNode = u2nodesMaps[ OLD_NODES ].begin();
1250 u_newNode = u2nodesMaps[ NEW_NODES ].begin();
1251 newEnd = u2nodesMaps[ NEW_NODES ].end();
1252 u_newOnSeam = u2nodesOnSeam.begin();
1253 if ( mergeNewToOld )
1254 for ( ; u_newNode != newEnd; ++u_newNode, ++u_oldNode )
1256 groupsOfNodes.push_back( list< const SMDS_MeshNode* >() );
1257 groupsOfNodes.back().push_back( u_oldNode->second );
1258 groupsOfNodes.back().push_back( u_newNode->second );
1259 if ( mergeSeamToNew )
1260 groupsOfNodes.back().push_back( (u_newOnSeam++)->second );
1262 else if ( mergeSeamToNew )
1263 for ( ; u_newNode != newEnd; ++u_newNode, ++u_newOnSeam )
1265 groupsOfNodes.push_back( list< const SMDS_MeshNode* >() );
1266 groupsOfNodes.back().push_back( u_newNode->second );
1267 groupsOfNodes.back().push_back( u_newOnSeam->second );
1270 } // loop on EDGE and VERTEX submeshes of a target FACE
1274 SMESH_MeshEditor editor( tgtMesh );
1275 int nbFaceBeforeMerge = tgtSubMesh->GetSubMeshDS()->NbElements();
1276 editor.MergeNodes( groupsOfNodes );
1277 int nbFaceAtferMerge = tgtSubMesh->GetSubMeshDS()->NbElements();
1278 if ( nbFaceBeforeMerge != nbFaceAtferMerge && !helper.HasDegeneratedEdges() )
1279 return error(COMPERR_BAD_INPUT_MESH, "Probably invalid node parameters on geom faces");
1281 // ----------------------------------------------------------------
1282 // The mapper can't create quadratic elements, so convert if needed
1283 // ----------------------------------------------------------------
1285 faceIt = srcSubMesh->GetSubMeshDS()->GetElements();
1286 bool srcIsQuad = faceIt->next()->IsQuadratic();
1287 faceIt = tgtSubMesh->GetSubMeshDS()->GetElements();
1288 bool tgtIsQuad = faceIt->next()->IsQuadratic();
1289 if ( srcIsQuad && !tgtIsQuad )
1291 TIDSortedElemSet tgtFaces;
1292 faceIt = tgtSubMesh->GetSubMeshDS()->GetElements();
1293 while ( faceIt->more() )
1294 tgtFaces.insert( tgtFaces.end(), faceIt->next() );
1296 editor.ConvertToQuadratic(/*theForce3d=*/false, tgtFaces, false);
1299 cleaner.Release(); // not to remove mesh
1301 } // end of projection using Pattern mapping
1304 // ---------------------------
1305 // Check elements orientation
1306 // ---------------------------
1308 TopoDS_Face face = TopoDS::Face( theShape );
1309 if ( !theMesh.IsMainShape( tgtFace ))
1311 // find the main shape
1312 TopoDS_Shape mainShape = meshDS->ShapeToMesh();
1313 switch ( mainShape.ShapeType() ) {
1315 case TopAbs_SOLID: break;
1317 TopTools_ListIteratorOfListOfShape ancestIt = theMesh.GetAncestors( face );
1318 for ( ; ancestIt.More(); ancestIt.Next() ) {
1319 TopAbs_ShapeEnum type = ancestIt.Value().ShapeType();
1320 if ( type == TopAbs_SOLID ) {
1321 mainShape = ancestIt.Value();
1323 } else if ( type == TopAbs_SHELL ) {
1324 mainShape = ancestIt.Value();
1328 // find tgtFace in the main solid or shell to know it's true orientation.
1329 TopExp_Explorer exp( mainShape, TopAbs_FACE );
1330 for ( ; exp.More(); exp.Next() ) {
1331 if ( tgtFace.IsSame( exp.Current() )) {
1332 face = TopoDS::Face( exp.Current() );
1338 if ( helper.IsReversedSubMesh( face ))
1340 SMESH_MeshEditor editor( tgtMesh );
1341 SMDS_ElemIteratorPtr eIt = meshDS->MeshElements( face )->GetElements();
1342 while ( eIt->more() ) {
1343 const SMDS_MeshElement* e = eIt->next();
1344 if ( e->GetType() == SMDSAbs_Face && !editor.Reorient( e ))
1345 RETURN_BAD_RESULT("Pb of SMESH_MeshEditor::Reorient()");
1353 //=======================================================================
1354 //function : Evaluate
1356 //=======================================================================
1358 bool StdMeshers_Projection_2D::Evaluate(SMESH_Mesh& theMesh,
1359 const TopoDS_Shape& theShape,
1360 MapShapeNbElems& aResMap)
1365 SMESH_Mesh * srcMesh = _sourceHypo->GetSourceMesh();
1366 SMESH_Mesh * tgtMesh = & theMesh;
1370 // ---------------------------
1371 // Make sub-shapes association
1372 // ---------------------------
1374 TopoDS_Face tgtFace = TopoDS::Face( theShape.Oriented(TopAbs_FORWARD));
1375 TopoDS_Shape srcShape = _sourceHypo->GetSourceFace().Oriented(TopAbs_FORWARD);
1377 TAssocTool::TShapeShapeMap shape2ShapeMap;
1378 TAssocTool::InitVertexAssociation( _sourceHypo, shape2ShapeMap );
1379 if ( !TAssocTool::FindSubShapeAssociation( tgtFace, tgtMesh, srcShape, srcMesh,
1381 !shape2ShapeMap.IsBound( tgtFace ))
1382 return error(COMPERR_BAD_SHAPE,"Topology of source and target faces seems different" );
1384 TopoDS_Face srcFace = TopoDS::Face( shape2ShapeMap( tgtFace ).Oriented(TopAbs_FORWARD));
1386 // -------------------------------------------------------
1387 // Assure that mesh on a source Face is computed/evaluated
1388 // -------------------------------------------------------
1390 std::vector<int> aVec;
1392 SMESH_subMesh* srcSubMesh = srcMesh->GetSubMesh( srcFace );
1393 if ( srcSubMesh->IsMeshComputed() )
1395 aVec.resize( SMDSEntity_Last, 0 );
1396 aVec[SMDSEntity_Node] = srcSubMesh->GetSubMeshDS()->NbNodes();
1398 SMDS_ElemIteratorPtr elemIt = srcSubMesh->GetSubMeshDS()->GetElements();
1399 while ( elemIt->more() )
1400 aVec[ elemIt->next()->GetEntityType() ]++;
1404 MapShapeNbElems tmpResMap;
1405 MapShapeNbElems& srcResMap = (srcMesh == tgtMesh) ? aResMap : tmpResMap;
1406 if ( !_gen->Evaluate( *srcMesh, srcShape, srcResMap ))
1407 return error(COMPERR_BAD_INPUT_MESH,"Source mesh not evaluatable");
1408 aVec = srcResMap[ srcSubMesh ];
1410 return error(COMPERR_BAD_INPUT_MESH,"Source mesh is wrongly evaluated");
1413 SMESH_subMesh * sm = theMesh.GetSubMesh(theShape);
1414 aResMap.insert(std::make_pair(sm,aVec));
1420 //=============================================================================
1422 * \brief Sets a default event listener to submesh of the source face
1423 * \param subMesh - submesh where algo is set
1425 * This method is called when a submesh gets HYP_OK algo_state.
1426 * After being set, event listener is notified on each event of a submesh.
1427 * Arranges that CLEAN event is translated from source submesh to
1430 //=============================================================================
1432 void StdMeshers_Projection_2D::SetEventListener(SMESH_subMesh* subMesh)
1434 TAssocTool::SetEventListener( subMesh,
1435 _sourceHypo->GetSourceFace(),
1436 _sourceHypo->GetSourceMesh() );