1 // Copyright (C) 2007-2013 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
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 SCRUTE((edge.IsNull()));
143 SCRUTE((SMESH_MesherHelper::IsSubShape( edge, srcMesh )));
144 SCRUTE((SMESH_MesherHelper::IsSubShape( edge, _sourceHypo->GetSourceFace() )));
149 edge = TAssocTool::GetEdgeByVertices
150 ( tgtMesh, _sourceHypo->GetTargetVertex(1), _sourceHypo->GetTargetVertex(2) );
151 if ( edge.IsNull() || !SMESH_MesherHelper::IsSubShape( edge, tgtMesh ))
153 theStatus = HYP_BAD_PARAMETER;
154 SCRUTE((edge.IsNull()));
155 SCRUTE((SMESH_MesherHelper::IsSubShape( edge, tgtMesh )));
158 else if ( !_sourceHypo->IsCompoundSource() &&
159 !SMESH_MesherHelper::IsSubShape( edge, theShape ))
161 theStatus = HYP_BAD_PARAMETER;
162 SCRUTE((SMESH_MesherHelper::IsSubShape( edge, theShape )));
166 // check a source face
167 if ( !SMESH_MesherHelper::IsSubShape( _sourceHypo->GetSourceFace(), srcMesh ) ||
168 ( srcMesh == tgtMesh && theShape == _sourceHypo->GetSourceFace() ))
170 theStatus = HYP_BAD_PARAMETER;
171 SCRUTE((SMESH_MesherHelper::IsSubShape( _sourceHypo->GetSourceFace(), srcMesh )));
172 SCRUTE((srcMesh == tgtMesh));
173 SCRUTE(( theShape == _sourceHypo->GetSourceFace() ));
178 theStatus = HYP_INCOMPATIBLE;
180 return ( theStatus == HYP_OK );
185 //================================================================================
187 * \brief define if a node is new or old
188 * \param node - node to check
189 * \retval bool - true if the node existed before Compute() is called
191 //================================================================================
193 bool isOldNode( const SMDS_MeshNode* node/*, const bool is1DComputed*/ )
195 // old nodes are shared by edges and new ones are shared
196 // only by faces created by mapper
197 //if ( is1DComputed )
199 bool isOld = node->NbInverseElements(SMDSAbs_Edge) > 0;
204 // SMDS_ElemIteratorPtr invFace = node->GetInverseElementIterator(SMDSAbs_Face);
205 // bool isNew = invFace->more();
210 //================================================================================
212 * \brief Class to remove mesh built by pattern mapper on edges
213 * and vertices in the case of failure of projection algo.
214 * It does it's job at destruction
216 //================================================================================
221 MeshCleaner( SMESH_subMesh* faceSubMesh ): sm(faceSubMesh) {}
222 ~MeshCleaner() { Clean(sm); }
223 void Release() { sm = 0; } // mesh will not be removed
224 static void Clean( SMESH_subMesh* sm, bool withSub=true )
226 if ( !sm || !sm->GetSubMeshDS() ) return;
227 // PAL16567, 18920. Remove face nodes as well
228 // switch ( sm->GetSubShape().ShapeType() ) {
229 // case TopAbs_VERTEX:
230 // case TopAbs_EDGE: {
231 SMDS_NodeIteratorPtr nIt = sm->GetSubMeshDS()->GetNodes();
232 SMESHDS_Mesh* mesh = sm->GetFather()->GetMeshDS();
233 while ( nIt->more() ) {
234 const SMDS_MeshNode* node = nIt->next();
235 if ( !isOldNode( node ) )
236 mesh->RemoveNode( node );
238 // do not break but iterate over DependsOn()
241 if ( !withSub ) return;
242 SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(false,false);
243 while ( smIt->more() )
244 Clean( smIt->next(), false );
249 //================================================================================
251 * \brief find new nodes belonging to one free border of mesh on face
252 * \param sm - submesh on edge or vertex containg nodes to choose from
253 * \param face - the face bound by the submesh
254 * \param u2nodes - map to fill with nodes
255 * \param seamNodes - set of found nodes
256 * \retval bool - is a success
258 //================================================================================
260 bool getBoundaryNodes ( SMESH_subMesh* sm,
261 const TopoDS_Face& face,
262 map< double, const SMDS_MeshNode* > & u2nodes,
263 set< const SMDS_MeshNode* > & seamNodes)
267 if ( !sm || !sm->GetSubMeshDS() )
268 RETURN_BAD_RESULT("Null submesh");
270 SMDS_NodeIteratorPtr nIt = sm->GetSubMeshDS()->GetNodes();
271 switch ( sm->GetSubShape().ShapeType() ) {
273 case TopAbs_VERTEX: {
274 while ( nIt->more() ) {
275 const SMDS_MeshNode* node = nIt->next();
276 if ( isOldNode( node ) ) continue;
277 u2nodes.insert( make_pair( 0., node ));
278 seamNodes.insert( node );
285 // Get submeshes of sub-vertices
286 const map< int, SMESH_subMesh * >& subSM = sm->DependsOn();
287 if ( subSM.size() != 2 )
288 RETURN_BAD_RESULT("there must be 2 submeshes of sub-vertices"
289 " but we have " << subSM.size());
290 SMESH_subMesh* smV1 = subSM.begin()->second;
291 SMESH_subMesh* smV2 = subSM.rbegin()->second;
292 if ( !smV1->IsMeshComputed() || !smV2->IsMeshComputed() )
293 RETURN_BAD_RESULT("Empty vertex submeshes");
295 const SMDS_MeshNode* nV1 = 0;
296 const SMDS_MeshNode* nE = 0;
298 // Look for nV1 - a new node on V1
299 nIt = smV1->GetSubMeshDS()->GetNodes();
300 while ( nIt->more() && !nE ) {
301 const SMDS_MeshNode* node = nIt->next();
302 if ( isOldNode( node ) ) continue;
305 // Find nE - a new node connected to nV1 and belonging to edge submesh;
306 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
307 SMDS_ElemIteratorPtr vElems = nV1->GetInverseElementIterator(SMDSAbs_Face);
308 while ( vElems->more() && !nE ) {
309 const SMDS_MeshElement* elem = vElems->next();
310 int nbNodes = elem->NbNodes();
311 if ( elem->IsQuadratic() )
313 int iV1 = elem->GetNodeIndex( nV1 );
314 // try next after nV1
315 int iE = SMESH_MesherHelper::WrapIndex( iV1 + 1, nbNodes );
316 if ( smDS->Contains( elem->GetNode( iE ) ))
317 nE = elem->GetNode( iE );
319 // try node before nV1
320 iE = SMESH_MesherHelper::WrapIndex( iV1 - 1, nbNodes );
321 if ( smDS->Contains( elem->GetNode( iE )))
322 nE = elem->GetNode( iE );
324 if ( nE && elem->IsQuadratic() ) { // find medium node between nV1 and nE
325 if ( Abs( iV1 - iE ) == 1 )
326 nE = elem->GetNode( Min ( iV1, iE ) + nbNodes );
328 nE = elem->GetNode( elem->NbNodes() - 1 );
333 RETURN_BAD_RESULT("No new node found on V1");
335 RETURN_BAD_RESULT("new node on edge not found");
337 // Get the whole free border of a face
338 list< const SMDS_MeshNode* > bordNodes;
339 list< const SMDS_MeshElement* > bordFaces;
340 if ( !SMESH_MeshEditor::FindFreeBorder (nV1, nE, nV1, bordNodes, bordFaces ))
341 RETURN_BAD_RESULT("free border of a face not found by nodes " <<
342 nV1->GetID() << " " << nE->GetID() );
344 // Insert nodes of the free border to the map until node on V2 encountered
345 SMESHDS_SubMesh* v2smDS = smV2->GetSubMeshDS();
346 list< const SMDS_MeshNode* >::iterator bordIt = bordNodes.begin();
347 bordIt++; // skip nV1
348 for ( ; bordIt != bordNodes.end(); ++bordIt ) {
349 const SMDS_MeshNode* node = *bordIt;
350 if ( v2smDS->Contains( node ))
352 if ( node->GetPosition()->GetTypeOfPosition() != SMDS_TOP_EDGE )
353 RETURN_BAD_RESULT("Bad node position type: node " << node->GetID() <<
354 " pos type " << node->GetPosition()->GetTypeOfPosition());
355 const SMDS_EdgePosition* pos =
356 static_cast<const SMDS_EdgePosition*>(node->GetPosition());
357 u2nodes.insert( make_pair( pos->GetUParameter(), node ));
358 seamNodes.insert( node );
360 if ( u2nodes.size() != seamNodes.size() )
361 RETURN_BAD_RESULT("Bad node params on edge " << sm->GetId() <<
362 ", " << u2nodes.size() << " != " << seamNodes.size() );
367 RETURN_BAD_RESULT ("Unexpected submesh type");
369 } // bool getBoundaryNodes()
371 //================================================================================
373 * \brief Preform projection in case if tgtFace.IsPartner( srcFace ) and in case
374 * if projection by transformation is possible
376 //================================================================================
378 bool projectPartner(const TopoDS_Face& tgtFace,
379 const TopoDS_Face& srcFace,
380 SMESH_Mesh * tgtMesh,
381 SMESH_Mesh * srcMesh,
382 const TAssocTool::TShapeShapeMap& shape2ShapeMap)
384 MESSAGE("projectPartner");
385 const double tol = 1.e-7*srcMesh->GetMeshDS()->getMaxDim();
387 gp_Trsf trsf; // transformation to get location of target nodes from source ones
388 if ( tgtFace.IsPartner( srcFace ))
390 gp_Trsf srcTrsf = srcFace.Location();
391 gp_Trsf tgtTrsf = tgtFace.Location();
392 trsf = srcTrsf.Inverted() * tgtTrsf;
396 // Try to find the transformation
398 // make any local coord systems of src and tgt faces
399 vector<gp_Pnt> srcPP, tgtPP; // 3 points on face boundaries to make axes of CS
400 int tgtNbVert = SMESH_MesherHelper::Count( tgtFace, TopAbs_VERTEX, /*ignoreSame=*/true );
401 int srcNbVert = SMESH_MesherHelper::Count( srcFace, TopAbs_VERTEX, /*ignoreSame=*/true );
402 SMESH_subMesh * srcSM = srcMesh->GetSubMesh( srcFace );
403 SMESH_subMeshIteratorPtr smIt = srcSM->getDependsOnIterator(/*includeSelf=*/false,false);
404 srcSM = smIt->next(); // sm of a vertex
405 while ( smIt->more() && srcPP.size() < 3 )
407 srcSM = smIt->next();
408 SMESHDS_SubMesh* srcSmds = srcSM->GetSubMeshDS();
409 if ( !srcSmds ) continue;
410 SMDS_NodeIteratorPtr nIt = srcSmds->GetNodes();
411 while ( nIt->more() )
413 SMESH_TNodeXYZ p ( nIt->next());
415 switch ( srcPP.size() )
417 case 0: pOK = true; break;
419 case 1: pOK = ( srcPP[0].SquareDistance( p ) > 10*tol ); break;
423 gp_Vec p0p1( srcPP[0], srcPP[1] ), p0p( srcPP[0], p );
424 // pOK = !p0p1.IsParallel( p0p, tol );
425 pOK = !p0p1.IsParallel( p0p, 3.14/20 ); // angle min 18 degrees
432 // find corresponding point on target shape
435 const TopoDS_Shape& tgtShape = shape2ShapeMap( srcSM->GetSubShape(), /*isSrc=*/true );
436 if ( tgtShape.ShapeType() == TopAbs_VERTEX )
438 tgtP = BRep_Tool::Pnt( TopoDS::Vertex( tgtShape ));
439 if ( srcNbVert == tgtNbVert || tgtPP.empty() )
442 pOK = (( tgtP.Distance( tgtPP[0] ) > tol*tol ) &&
443 ( tgtPP.size() == 1 || tgtP.Distance( tgtPP[1] ) > tol*tol ));
444 //cout << "V - nS " << p._node->GetID() << " - nT " << SMESH_Algo::VertexNode(TopoDS::Vertex( tgtShape),tgtMesh->GetMeshDS())->GetID() << endl;
446 else if ( tgtPP.size() > 0 )
448 if ( SMESHDS_SubMesh* tgtSmds = tgtMesh->GetMeshDS()->MeshElements( tgtShape ))
450 double srcDist = srcPP[0].Distance( p );
451 double eTol = BRep_Tool::Tolerance( TopoDS::Edge( tgtShape ));
452 if (eTol < tol) eTol = tol;
453 SMDS_NodeIteratorPtr nItT = tgtSmds->GetNodes();
454 while ( nItT->more() && !pOK )
456 const SMDS_MeshNode* n = nItT->next();
457 tgtP = SMESH_TNodeXYZ( n );
458 pOK = ( fabs( srcDist - tgtPP[0].Distance( tgtP )) < 2*eTol );
459 //cout << "E - nS " << p._node->GetID() << " - nT " << n->GetID()<< " OK - " << pOK<< " " << fabs( srcDist - tgtPP[0].Distance( tgtP ))<< " tol " << eTol<< endl;
466 srcPP.push_back( p );
467 tgtPP.push_back( tgtP );
470 if ( srcPP.size() != 3 )
473 // make transformation
474 gp_Trsf fromTgtCS, toSrcCS; // from/to global CS
475 gp_Ax2 srcCS( srcPP[0], gp_Vec( srcPP[0], srcPP[1] ), gp_Vec( srcPP[0], srcPP[2]));
476 gp_Ax2 tgtCS( tgtPP[0], gp_Vec( tgtPP[0], tgtPP[1] ), gp_Vec( tgtPP[0], tgtPP[2]));
477 toSrcCS .SetTransformation( gp_Ax3( srcCS ));
478 fromTgtCS.SetTransformation( gp_Ax3( tgtCS ));
481 trsf = fromTgtCS * toSrcCS;
484 // Fill map of src to tgt nodes with nodes on edges
486 map<const SMDS_MeshNode* , const SMDS_MeshNode*> src2tgtNodes;
487 map<const SMDS_MeshNode* , const SMDS_MeshNode*>::iterator srcN_tgtN;
489 for ( TopExp_Explorer srcEdge( srcFace, TopAbs_EDGE); srcEdge.More(); srcEdge.Next() )
491 const TopoDS_Shape& tgtEdge = shape2ShapeMap( srcEdge.Current(), /*isSrc=*/true );
493 map< double, const SMDS_MeshNode* > srcNodes, tgtNodes;
494 if ( !SMESH_Algo::GetSortedNodesOnEdge( srcMesh->GetMeshDS(),
495 TopoDS::Edge( srcEdge.Current() ),
496 /*ignoreMediumNodes = */true,
499 !SMESH_Algo::GetSortedNodesOnEdge( tgtMesh->GetMeshDS(),
500 TopoDS::Edge( tgtEdge ),
501 /*ignoreMediumNodes = */true,
504 srcNodes.size() != tgtNodes.size())
507 if ( !tgtEdge.IsPartner( srcEdge.Current() ))
509 // check that transformation is OK by three nodes
510 gp_Pnt p0S = SMESH_TNodeXYZ( (srcNodes.begin()) ->second);
511 gp_Pnt p1S = SMESH_TNodeXYZ( (srcNodes.rbegin()) ->second);
512 gp_Pnt p2S = SMESH_TNodeXYZ( (++srcNodes.begin())->second);
514 gp_Pnt p0T = SMESH_TNodeXYZ( (tgtNodes.begin()) ->second);
515 gp_Pnt p1T = SMESH_TNodeXYZ( (tgtNodes.rbegin()) ->second);
516 gp_Pnt p2T = SMESH_TNodeXYZ( (++tgtNodes.begin())->second);
518 // transform source points, they must coincide with target ones
519 if ( p0T.SquareDistance( p0S.Transformed( trsf )) > tol ||
520 p1T.SquareDistance( p1S.Transformed( trsf )) > tol ||
521 p2T.SquareDistance( p2S.Transformed( trsf )) > tol )
523 //cout << "KO trsf, 3 dist: "
524 //<< p0T.SquareDistance( p0S.Transformed( trsf ))<< ", "
525 //<< p1T.SquareDistance( p1S.Transformed( trsf ))<< ", "
526 //<< p2T.SquareDistance( p2S.Transformed( trsf ))<< ", "<<endl;
531 map< double, const SMDS_MeshNode* >::iterator u_tn = tgtNodes.begin();
532 map< double, const SMDS_MeshNode* >::iterator u_sn = srcNodes.begin();
533 for ( ; u_tn != tgtNodes.end(); ++u_tn, ++u_sn)
534 src2tgtNodes.insert( make_pair( u_sn->second, u_tn->second ));
539 // prepare the helper to adding quadratic elements if necessary
540 SMESH_MesherHelper helper( *tgtMesh );
541 helper.SetSubShape( tgtFace );
542 helper.IsQuadraticSubMesh( tgtFace );
543 helper.SetElementsOnShape( true );
545 SMESH_MesherHelper srcHelper( *srcMesh );
546 srcHelper.SetSubShape( srcFace );
548 const SMDS_MeshNode* nullNode = 0;
550 // indices of nodes to create properly oriented faces
551 int tri1 = 1, tri2 = 2, quad1 = 1, quad3 = 3;
552 if ( trsf.Form() != gp_Identity )
553 std::swap( tri1, tri2 ), std::swap( quad1, quad3 );
555 SMESHDS_SubMesh* srcSubDS = srcMesh->GetMeshDS()->MeshElements( srcFace );
556 SMDS_ElemIteratorPtr elemIt = srcSubDS->GetElements();
557 vector< const SMDS_MeshNode* > tgtNodes;
558 while ( elemIt->more() ) // loop on all mesh faces on srcFace
560 const SMDS_MeshElement* elem = elemIt->next();
561 const int nbN = elem->NbCornerNodes();
562 tgtNodes.resize( nbN );
563 for ( int i = 0; i < nbN; ++i ) // loop on nodes of the source element
565 const SMDS_MeshNode* srcNode = elem->GetNode(i);
566 srcN_tgtN = src2tgtNodes.insert( make_pair( srcNode, nullNode )).first;
567 if ( srcN_tgtN->second == nullNode )
570 gp_Pnt tgtP = gp_Pnt(srcNode->X(),srcNode->Y(),srcNode->Z()).Transformed( trsf );
571 SMDS_MeshNode* n = helper.AddNode( tgtP.X(), tgtP.Y(), tgtP.Z() );
572 srcN_tgtN->second = n;
574 gp_Pnt2d srcUV = srcHelper.GetNodeUV( srcFace, srcNode,
575 elem->GetNode( helper.WrapIndex(i+1,nbN)));
576 n->SetPosition( new SMDS_FacePosition( srcUV.X(), srcUV.Y() ));
578 tgtNodes[i] = srcN_tgtN->second;
583 case 3: helper.AddFace(tgtNodes[0], tgtNodes[tri1], tgtNodes[tri2]); break;
584 case 4: helper.AddFace(tgtNodes[0], tgtNodes[quad1], tgtNodes[2], tgtNodes[quad3]); break;
589 } // bool projectPartner()
591 //================================================================================
593 * \brief Preform projection in case if the faces are similar in 2D space
595 //================================================================================
597 bool projectBy2DSimilarity(const TopoDS_Face& tgtFace,
598 const TopoDS_Face& srcFace,
599 SMESH_Mesh * tgtMesh,
600 SMESH_Mesh * srcMesh,
601 const TAssocTool::TShapeShapeMap& shape2ShapeMap,
602 const bool is1DComputed)
606 // get ordered src EDGEs
608 TSideVector srcWires =
609 StdMeshers_FaceSide::GetFaceWires( srcFace, *srcMesh,/*ignoreMediumNodes = */false, err);
610 if ( err && !err->IsOK() )
613 // make corresponding sequence of tgt EDGEs
614 TSideVector tgtWires( srcWires.size() );
615 for ( unsigned iW = 0; iW < srcWires.size(); ++iW )
617 list< TopoDS_Edge > tgtEdges;
618 StdMeshers_FaceSidePtr srcWire = srcWires[iW];
619 TopTools_IndexedMapOfShape edgeMap; // to detect seam edges
620 for ( int iE = 0; iE < srcWire->NbEdges(); ++iE )
622 tgtEdges.push_back( TopoDS::Edge( shape2ShapeMap( srcWire->Edge( iE ), /*isSrc=*/true)));
623 // reverse a seam edge encountered for the second time
624 const int oldExtent = edgeMap.Extent();
625 edgeMap.Add( tgtEdges.back() );
626 if ( oldExtent == edgeMap.Extent() )
627 tgtEdges.back().Reverse();
629 tgtWires[ iW ].reset( new StdMeshers_FaceSide( tgtFace, tgtEdges, tgtMesh,
630 /*theIsForward = */ true,
631 /*theIgnoreMediumNodes = */false));
633 srcWires[iW]->GetUVPtStruct().size() !=
634 tgtWires[iW]->GetUVPtStruct().size())
638 // 2) Find transformation
642 // get 2 pairs of corresponding UVs
643 gp_Pnt2d srcP0 = srcWires[0]->Value2d(0.0);
644 gp_Pnt2d srcP1 = srcWires[0]->Value2d(0.333);
645 gp_Pnt2d tgtP0 = tgtWires[0]->Value2d(0.0);
646 gp_Pnt2d tgtP1 = tgtWires[0]->Value2d(0.333);
648 // make transformation
649 gp_Trsf2d fromTgtCS, toSrcCS; // from/to global CS
650 gp_Ax2d srcCS( srcP0, gp_Vec2d( srcP0, srcP1 ));
651 gp_Ax2d tgtCS( tgtP0, gp_Vec2d( tgtP0, tgtP1 ));
652 toSrcCS .SetTransformation( srcCS );
653 fromTgtCS.SetTransformation( tgtCS );
656 trsf = fromTgtCS * toSrcCS;
658 // check transformation
659 const double tol = 1e-5 * gp_Vec2d( srcP0, srcP1 ).Magnitude();
660 for ( double u = 0.12; u < 1.; u += 0.1 )
662 gp_Pnt2d srcUV = srcWires[0]->Value2d( u );
663 gp_Pnt2d tgtUV = tgtWires[0]->Value2d( u );
664 gp_Pnt2d tgtUV2 = srcUV.Transformed( trsf );
665 if ( tgtUV.Distance( tgtUV2 ) > tol )
672 typedef map<const SMDS_MeshNode* , const SMDS_MeshNode*, TIDCompare> TN2NMap;
673 TN2NMap src2tgtNodes;
674 TN2NMap::iterator srcN_tgtN;
676 // fill src2tgtNodes in with nodes on EDGEs
677 for ( unsigned iW = 0; iW < srcWires.size(); ++iW )
680 const vector<UVPtStruct>& srcUVs = srcWires[iW]->GetUVPtStruct();
681 const vector<UVPtStruct>& tgtUVs = tgtWires[iW]->GetUVPtStruct();
682 for ( unsigned i = 0; i < srcUVs.size(); ++i )
683 src2tgtNodes.insert( make_pair( srcUVs[i].node, tgtUVs[i].node ));
687 for ( int iE = 0; iE < srcWires[iW]->NbEdges(); ++iE )
689 TopoDS_Vertex srcV = srcWires[iW]->FirstVertex(iE);
690 TopoDS_Vertex tgtV = tgtWires[iW]->FirstVertex(iE);
691 const SMDS_MeshNode* srcNode = SMESH_Algo::VertexNode( srcV, srcMesh->GetMeshDS() );
692 const SMDS_MeshNode* tgtNode = SMESH_Algo::VertexNode( tgtV, tgtMesh->GetMeshDS() );
693 if ( tgtNode && srcNode )
694 src2tgtNodes.insert( make_pair( srcNode, tgtNode ));
700 SMESHDS_SubMesh* srcSubDS = srcMesh->GetMeshDS()->MeshElements( srcFace );
702 SMESH_MesherHelper helper( *tgtMesh );
703 helper.SetSubShape( tgtFace );
705 helper.IsQuadraticSubMesh( tgtFace );
707 helper.SetIsQuadratic( srcSubDS->GetElements()->next()->IsQuadratic() );
708 helper.SetElementsOnShape( true );
709 Handle(Geom_Surface) tgtSurface = BRep_Tool::Surface( tgtFace );
710 SMESHDS_Mesh* tgtMeshDS = tgtMesh->GetMeshDS();
712 SMESH_MesherHelper srcHelper( *srcMesh );
713 srcHelper.SetSubShape( srcFace );
715 const SMDS_MeshNode* nullNode = 0;
717 SMDS_ElemIteratorPtr elemIt = srcSubDS->GetElements();
718 vector< const SMDS_MeshNode* > tgtNodes;
720 while ( elemIt->more() ) // loop on all mesh faces on srcFace
722 const SMDS_MeshElement* elem = elemIt->next();
723 const int nbN = elem->NbCornerNodes();
724 tgtNodes.resize( nbN );
725 for ( int i = 0; i < nbN; ++i ) // loop on nodes of the source element
727 const SMDS_MeshNode* srcNode = elem->GetNode(i);
728 srcN_tgtN = src2tgtNodes.insert( make_pair( srcNode, nullNode )).first;
729 if ( srcN_tgtN->second == nullNode )
732 gp_Pnt2d srcUV = srcHelper.GetNodeUV( srcFace, srcNode,
733 elem->GetNode( helper.WrapIndex(i+1,nbN)), &uvOK);
734 gp_Pnt2d tgtUV = srcUV.Transformed( trsf );
735 gp_Pnt tgtP = tgtSurface->Value( tgtUV.X(), tgtUV.Y() );
736 SMDS_MeshNode* n = tgtMeshDS->AddNode( tgtP.X(), tgtP.Y(), tgtP.Z() );
737 switch ( srcNode->GetPosition()->GetTypeOfPosition() )
739 case SMDS_TOP_FACE: {
740 tgtMeshDS->SetNodeOnFace( n, helper.GetSubShapeID(), tgtUV.X(), tgtUV.Y() );
743 case SMDS_TOP_EDGE: {
744 TopoDS_Shape srcEdge = srcHelper.GetSubShapeByNode( srcNode, srcHelper.GetMeshDS() );
745 TopoDS_Edge tgtEdge = TopoDS::Edge( shape2ShapeMap( srcEdge, /*isSrc=*/true ));
746 tgtMeshDS->SetNodeOnEdge( n, TopoDS::Edge( tgtEdge ));
747 double U = srcHelper.GetNodeU( TopoDS::Edge( srcEdge ), srcNode );
748 helper.CheckNodeU( tgtEdge, n, U, Precision::PConfusion());
749 n->SetPosition(SMDS_PositionPtr(new SMDS_EdgePosition( U )));
752 case SMDS_TOP_VERTEX: {
753 TopoDS_Shape srcV = srcHelper.GetSubShapeByNode( srcNode, srcHelper.GetMeshDS() );
754 TopoDS_Shape tgtV = shape2ShapeMap( srcV, /*isSrc=*/true );
755 tgtMeshDS->SetNodeOnVertex( n, TopoDS::Vertex( tgtV ));
759 srcN_tgtN->second = n;
761 tgtNodes[i] = srcN_tgtN->second;
763 // create a new face (with reversed orientation)
766 case 3: helper.AddFace(tgtNodes[0], tgtNodes[2], tgtNodes[1]); break;
767 case 4: helper.AddFace(tgtNodes[0], tgtNodes[3], tgtNodes[2], tgtNodes[1]); break;
772 } // bool projectBy2DSimilarity(...)
777 //=======================================================================
780 //=======================================================================
782 bool StdMeshers_Projection_2D::Compute(SMESH_Mesh& theMesh, const TopoDS_Shape& theShape)
784 MESSAGE("Projection_2D Compute");
788 SMESH_Mesh * srcMesh = _sourceHypo->GetSourceMesh();
789 SMESH_Mesh * tgtMesh = & theMesh;
793 SMESHDS_Mesh * meshDS = theMesh.GetMeshDS();
795 // ---------------------------
796 // Make sub-shapes association
797 // ---------------------------
799 TopoDS_Face tgtFace = TopoDS::Face( theShape.Oriented(TopAbs_FORWARD));
800 TopoDS_Shape srcShape = _sourceHypo->GetSourceFace().Oriented(TopAbs_FORWARD);
802 TAssocTool::TShapeShapeMap shape2ShapeMap;
803 TAssocTool::InitVertexAssociation( _sourceHypo, shape2ShapeMap );
804 if ( !TAssocTool::FindSubShapeAssociation( tgtFace, tgtMesh, srcShape, srcMesh,
806 !shape2ShapeMap.IsBound( tgtFace ))
808 if ( srcShape.ShapeType() == TopAbs_FACE )
810 int nbE1 = SMESH_MesherHelper::Count( tgtFace, TopAbs_EDGE, /*ignoreSame=*/true );
811 int nbE2 = SMESH_MesherHelper::Count( srcShape, TopAbs_EDGE, /*ignoreSame=*/true );
813 return error(COMPERR_BAD_SHAPE,
814 SMESH_Comment("Different number of edges in source and target faces: ")
815 << nbE2 << " and " << nbE1 );
817 return error(COMPERR_BAD_SHAPE,"Topology of source and target faces seems different" );
819 TopoDS_Face srcFace = TopoDS::Face( shape2ShapeMap( tgtFace ).Oriented(TopAbs_FORWARD));
821 // ----------------------------------------------
822 // Assure that mesh on a source Face is computed
823 // ----------------------------------------------
825 SMESH_subMesh* srcSubMesh = srcMesh->GetSubMesh( srcFace );
826 SMESH_subMesh* tgtSubMesh = tgtMesh->GetSubMesh( tgtFace );
829 if ( tgtMesh == srcMesh ) {
830 if ( !TAssocTool::MakeComputed( srcSubMesh ))
831 srcMeshError = TAssocTool::SourceNotComputedError( srcSubMesh, this );
834 if ( !srcSubMesh->IsMeshComputed() )
835 srcMeshError = TAssocTool::SourceNotComputedError();
837 if ( !srcMeshError.empty() )
838 return error(COMPERR_BAD_INPUT_MESH, srcMeshError );
844 // find out if EDGEs are meshed or not
845 bool is1DComputed = false;
846 SMESH_subMeshIteratorPtr smIt = tgtSubMesh->getDependsOnIterator(/*includeSelf=*/false,
847 /*complexShapeFirst=*/true);
848 while ( smIt->more() && !is1DComputed )
850 SMESH_subMesh* sm = smIt->next();
851 if ( sm->GetSubShape().ShapeType() == TopAbs_EDGE )
852 is1DComputed = sm->IsMeshComputed();
859 // try to project from the same face with different location
860 done = projectPartner( tgtFace, srcFace, tgtMesh, srcMesh, shape2ShapeMap );
864 // projection in case if the faces are similar in 2D space
865 done = projectBy2DSimilarity( tgtFace, srcFace, tgtMesh, srcMesh, shape2ShapeMap, is1DComputed);
868 SMESH_MesherHelper helper( theMesh );
869 helper.SetSubShape( tgtFace );
873 // --------------------
874 // Prepare to mapping
875 // --------------------
877 // Check if node projection to a face is needed
879 SMDS_ElemIteratorPtr faceIt = srcSubMesh->GetSubMeshDS()->GetElements();
881 for ( ; nbFaceNodes < 3 && faceIt->more(); ) {
882 const SMDS_MeshElement* face = faceIt->next();
883 SMDS_ElemIteratorPtr nodeIt = face->nodesIterator();
884 while ( nodeIt->more() ) {
885 const SMDS_MeshNode* node = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
886 if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE ) {
888 uvBox.Add( helper.GetNodeUV( srcFace, node ));
892 const bool toProjectNodes =
893 ( nbFaceNodes > 0 && ( uvBox.IsVoid() || uvBox.SquareExtent() < DBL_MIN ));
895 // Find the corresponding source and target vertex
896 // and <theReverse> flag needed to call mapper.Apply()
898 TopoDS_Vertex srcV1, tgtV1;
899 bool reverse = false;
901 if ( _sourceHypo->HasVertexAssociation() ) {
902 srcV1 = _sourceHypo->GetSourceVertex(1);
903 tgtV1 = _sourceHypo->GetTargetVertex(1);
905 srcV1 = TopoDS::Vertex( TopExp_Explorer( srcFace, TopAbs_VERTEX ).Current() );
906 tgtV1 = TopoDS::Vertex( shape2ShapeMap( srcV1, /*isSrc=*/true ));
908 list< TopoDS_Edge > tgtEdges, srcEdges;
909 list< int > nbEdgesInWires;
910 SMESH_Block::GetOrderedEdges( tgtFace, tgtEdges, nbEdgesInWires, tgtV1 );
911 SMESH_Block::GetOrderedEdges( srcFace, srcEdges, nbEdgesInWires, srcV1 );
913 if ( nbEdgesInWires.front() > 1 ) // possible to find out orientation
915 TopoDS_Edge srcE1 = srcEdges.front(), tgtE1 = tgtEdges.front();
916 TopoDS_Shape srcE1bis = shape2ShapeMap( tgtE1 );
917 reverse = ( ! srcE1.IsSame( srcE1bis ));
919 _sourceHypo->HasVertexAssociation() &&
920 nbEdgesInWires.front() > 2 &&
921 helper.IsRealSeam( tgtEdges.front() ))
923 // projection to a face with seam EDGE; pb is that GetOrderedEdges()
924 // always puts a seam EDGE first (if possible) and as a result
925 // we can't use only theReverse flag to correctly associate source
926 // and target faces in the mapper. Thus we select srcV1 so that
927 // GetOrderedEdges() to return EDGEs in a needed order
928 list< TopoDS_Edge >::iterator edge = srcEdges.begin();
929 for ( ; edge != srcEdges.end(); ++edge ) {
930 if ( srcE1bis.IsSame( *edge )) {
931 srcV1 = helper.IthVertex( 0, *edge );
937 else if ( nbEdgesInWires.front() == 1 )
939 // TODO::Compare orientation of curves in a sole edge
940 //RETURN_BAD_RESULT("Not implemented case");
944 RETURN_BAD_RESULT("Bad result from SMESH_Block::GetOrderedEdges()");
947 // Load pattern from the source face
948 SMESH_Pattern mapper;
949 mapper.Load( srcMesh, srcFace, toProjectNodes, srcV1 );
950 if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
951 return error(COMPERR_BAD_INPUT_MESH,"Can't load mesh pattern from the source face");
953 // --------------------
954 // Perform 2D mapping
955 // --------------------
957 // Compute mesh on a target face
959 mapper.Apply( tgtFace, tgtV1, reverse );
960 if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
961 return error("Can't apply source mesh pattern to the face");
965 const bool toCreatePolygons = false, toCreatePolyedrs = false;
966 mapper.MakeMesh( tgtMesh, toCreatePolygons, toCreatePolyedrs );
967 if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
968 return error("Can't make mesh by source mesh pattern");
970 // it will remove mesh built by pattern mapper on edges and vertices
972 MeshCleaner cleaner( tgtSubMesh );
974 // -------------------------------------------------------------------------
975 // mapper doesn't take care of nodes already existing on edges and vertices,
976 // so we must merge nodes created by it with existing ones
977 // -------------------------------------------------------------------------
979 SMESH_MeshEditor::TListOfListOfNodes groupsOfNodes;
981 // Make groups of nodes to merge
983 // loop on EDGE and VERTEX sub-meshes of a target FACE
984 smIt = tgtSubMesh->getDependsOnIterator(/*includeSelf=*/false,/*complexShapeFirst=*/false);
985 while ( smIt->more() )
987 SMESH_subMesh* sm = smIt->next();
988 SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
989 if ( !smDS || smDS->NbNodes() == 0 )
991 //if ( !is1DComputed && sm->GetSubShape().ShapeType() == TopAbs_EDGE )
994 if ( helper.IsDegenShape( sm->GetId() ) ) // to merge all nodes on degenerated
996 if ( sm->GetSubShape().ShapeType() == TopAbs_EDGE )
998 groupsOfNodes.push_back( list< const SMDS_MeshNode* >() );
999 SMESH_subMeshIteratorPtr smDegenIt
1000 = sm->getDependsOnIterator(/*includeSelf=*/true,/*complexShapeFirst=*/false);
1001 while ( smDegenIt->more() )
1002 if (( smDS = smDegenIt->next()->GetSubMeshDS() ))
1004 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
1005 while ( nIt->more() )
1006 groupsOfNodes.back().push_back( nIt->next() );
1009 continue; // do not treat sm of degen VERTEX
1012 // Sort new and old nodes of a submesh separately
1014 bool isSeam = helper.IsRealSeam( sm->GetId() );
1016 enum { NEW_NODES = 0, OLD_NODES };
1017 map< double, const SMDS_MeshNode* > u2nodesMaps[2], u2nodesOnSeam;
1018 map< double, const SMDS_MeshNode* >::iterator u_oldNode, u_newNode, u_newOnSeam, newEnd;
1019 set< const SMDS_MeshNode* > seamNodes;
1021 // mapper puts on a seam edge nodes from 2 edges
1022 if ( isSeam && ! getBoundaryNodes ( sm, tgtFace, u2nodesOnSeam, seamNodes ))
1023 RETURN_BAD_RESULT("getBoundaryNodes() failed");
1025 SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
1026 while ( nIt->more() )
1028 const SMDS_MeshNode* node = nIt->next();
1029 bool isOld = isOldNode( node );
1031 if ( !isOld && isSeam ) { // new node on a seam edge
1032 if ( seamNodes.count( node ) )
1033 continue; // node is already in the map
1036 // sort nodes on edges by their position
1037 map< double, const SMDS_MeshNode* > & pos2nodes = u2nodesMaps[isOld ? OLD_NODES : NEW_NODES];
1038 switch ( node->GetPosition()->GetTypeOfPosition() )
1040 case SMDS_TOP_VERTEX: {
1041 if ( !is1DComputed && !pos2nodes.empty() )
1042 u2nodesMaps[isOld ? NEW_NODES : OLD_NODES].insert( make_pair( 0, node ));
1044 pos2nodes.insert( make_pair( 0, node ));
1047 case SMDS_TOP_EDGE: {
1048 const SMDS_EdgePosition* pos =
1049 static_cast<const SMDS_EdgePosition*>(node->GetPosition());
1050 pos2nodes.insert( make_pair( pos->GetUParameter(), node ));
1054 RETURN_BAD_RESULT("Wrong node position type: "<<
1055 node->GetPosition()->GetTypeOfPosition());
1058 const bool mergeNewToOld =
1059 ( u2nodesMaps[ NEW_NODES ].size() == u2nodesMaps[ OLD_NODES ].size() );
1060 const bool mergeSeamToNew =
1061 ( u2nodesMaps[ NEW_NODES ].size() == u2nodesOnSeam.size() );
1063 if ( !mergeNewToOld )
1064 if ( u2nodesMaps[ NEW_NODES ].size() > 0 &&
1065 u2nodesMaps[ OLD_NODES ].size() > 0 )
1067 u_oldNode = u2nodesMaps[ OLD_NODES ].begin();
1068 newEnd = u2nodesMaps[ OLD_NODES ].end();
1069 for ( ; u_oldNode != newEnd; ++u_oldNode )
1070 SMESH_Algo::addBadInputElement( u_oldNode->second );
1071 return error( COMPERR_BAD_INPUT_MESH,
1072 SMESH_Comment( "Existing mesh mismatches the projected 2D mesh on " )
1073 << ( sm->GetSubShape().ShapeType() == TopAbs_EDGE ? "edge" : "vertex" )
1074 << " #" << sm->GetId() );
1076 if ( isSeam && !mergeSeamToNew ) {
1077 const TopoDS_Shape& seam = sm->GetSubShape();
1078 if ( u2nodesMaps[ NEW_NODES ].size() > 0 &&
1079 u2nodesOnSeam.size() > 0 &&
1080 seam.ShapeType() == TopAbs_EDGE )
1082 int nbE1 = SMESH_MesherHelper::Count( tgtFace, TopAbs_EDGE, /*ignoreSame=*/true );
1083 int nbE2 = SMESH_MesherHelper::Count( srcFace, TopAbs_EDGE, /*ignoreSame=*/true );
1084 if ( nbE1 != nbE2 ) // 2 EDGEs are mapped to a seam EDGE
1086 // find the 2 EDGEs of srcFace
1087 TopTools_DataMapIteratorOfDataMapOfShapeShape src2tgtIt( shape2ShapeMap._map2to1 );
1088 for ( ; src2tgtIt.More(); src2tgtIt.Next() )
1089 if ( seam.IsSame( src2tgtIt.Value() ))
1090 SMESH_Algo::addBadInputElements
1091 ( srcMesh->GetMeshDS()->MeshElements( src2tgtIt.Key() ));
1092 return error( COMPERR_BAD_INPUT_MESH,
1093 "Different number of nodes on two edges projected to a seam edge" );
1098 // Make groups of nodes to merge
1100 u_oldNode = u2nodesMaps[ OLD_NODES ].begin();
1101 u_newNode = u2nodesMaps[ NEW_NODES ].begin();
1102 newEnd = u2nodesMaps[ NEW_NODES ].end();
1103 u_newOnSeam = u2nodesOnSeam.begin();
1104 if ( mergeNewToOld )
1105 for ( ; u_newNode != newEnd; ++u_newNode, ++u_oldNode )
1107 groupsOfNodes.push_back( list< const SMDS_MeshNode* >() );
1108 groupsOfNodes.back().push_back( u_oldNode->second );
1109 groupsOfNodes.back().push_back( u_newNode->second );
1110 if ( mergeSeamToNew )
1111 groupsOfNodes.back().push_back( (u_newOnSeam++)->second );
1113 else if ( mergeSeamToNew )
1114 for ( ; u_newNode != newEnd; ++u_newNode, ++u_newOnSeam )
1116 groupsOfNodes.push_back( list< const SMDS_MeshNode* >() );
1117 groupsOfNodes.back().push_back( u_newNode->second );
1118 groupsOfNodes.back().push_back( u_newOnSeam->second );
1121 } // loop on EDGE and VERTEX submeshes of a target FACE
1125 SMESH_MeshEditor editor( tgtMesh );
1126 int nbFaceBeforeMerge = tgtSubMesh->GetSubMeshDS()->NbElements();
1127 editor.MergeNodes( groupsOfNodes );
1128 int nbFaceAtferMerge = tgtSubMesh->GetSubMeshDS()->NbElements();
1129 if ( nbFaceBeforeMerge != nbFaceAtferMerge && !helper.HasDegeneratedEdges() )
1130 return error(COMPERR_BAD_INPUT_MESH, "Probably invalid node parameters on geom faces");
1132 // ----------------------------------------------------------------
1133 // The mapper can't create quadratic elements, so convert if needed
1134 // ----------------------------------------------------------------
1136 faceIt = srcSubMesh->GetSubMeshDS()->GetElements();
1137 bool srcIsQuad = faceIt->next()->IsQuadratic();
1138 faceIt = tgtSubMesh->GetSubMeshDS()->GetElements();
1139 bool tgtIsQuad = faceIt->next()->IsQuadratic();
1140 if ( srcIsQuad && !tgtIsQuad )
1142 TIDSortedElemSet tgtFaces;
1143 faceIt = tgtSubMesh->GetSubMeshDS()->GetElements();
1144 while ( faceIt->more() )
1145 tgtFaces.insert( tgtFaces.end(), faceIt->next() );
1147 editor.ConvertToQuadratic(/*theForce3d=*/false, tgtFaces, false);
1150 cleaner.Release(); // not to remove mesh
1152 } // end of projection using Pattern mapping
1155 // ---------------------------
1156 // Check elements orientation
1157 // ---------------------------
1159 TopoDS_Face face = TopoDS::Face( theShape );
1160 if ( !theMesh.IsMainShape( tgtFace ))
1162 // find the main shape
1163 TopoDS_Shape mainShape = meshDS->ShapeToMesh();
1164 switch ( mainShape.ShapeType() ) {
1166 case TopAbs_SOLID: break;
1168 TopTools_ListIteratorOfListOfShape ancestIt = theMesh.GetAncestors( face );
1169 for ( ; ancestIt.More(); ancestIt.Next() ) {
1170 TopAbs_ShapeEnum type = ancestIt.Value().ShapeType();
1171 if ( type == TopAbs_SOLID ) {
1172 mainShape = ancestIt.Value();
1174 } else if ( type == TopAbs_SHELL ) {
1175 mainShape = ancestIt.Value();
1179 // find tgtFace in the main solid or shell to know it's true orientation.
1180 TopExp_Explorer exp( mainShape, TopAbs_FACE );
1181 for ( ; exp.More(); exp.Next() ) {
1182 if ( tgtFace.IsSame( exp.Current() )) {
1183 face = TopoDS::Face( exp.Current() );
1189 if ( helper.IsReversedSubMesh( face ))
1191 SMESH_MeshEditor editor( tgtMesh );
1192 SMDS_ElemIteratorPtr eIt = meshDS->MeshElements( face )->GetElements();
1193 while ( eIt->more() ) {
1194 const SMDS_MeshElement* e = eIt->next();
1195 if ( e->GetType() == SMDSAbs_Face && !editor.Reorient( e ))
1196 RETURN_BAD_RESULT("Pb of SMESH_MeshEditor::Reorient()");
1204 //=======================================================================
1205 //function : Evaluate
1207 //=======================================================================
1209 bool StdMeshers_Projection_2D::Evaluate(SMESH_Mesh& theMesh,
1210 const TopoDS_Shape& theShape,
1211 MapShapeNbElems& aResMap)
1216 SMESH_Mesh * srcMesh = _sourceHypo->GetSourceMesh();
1217 SMESH_Mesh * tgtMesh = & theMesh;
1221 // ---------------------------
1222 // Make sub-shapes association
1223 // ---------------------------
1225 TopoDS_Face tgtFace = TopoDS::Face( theShape.Oriented(TopAbs_FORWARD));
1226 TopoDS_Shape srcShape = _sourceHypo->GetSourceFace().Oriented(TopAbs_FORWARD);
1228 TAssocTool::TShapeShapeMap shape2ShapeMap;
1229 TAssocTool::InitVertexAssociation( _sourceHypo, shape2ShapeMap );
1230 if ( !TAssocTool::FindSubShapeAssociation( tgtFace, tgtMesh, srcShape, srcMesh,
1232 !shape2ShapeMap.IsBound( tgtFace ))
1233 return error(COMPERR_BAD_SHAPE,"Topology of source and target faces seems different" );
1235 TopoDS_Face srcFace = TopoDS::Face( shape2ShapeMap( tgtFace ).Oriented(TopAbs_FORWARD));
1237 // -------------------------------------------------------
1238 // Assure that mesh on a source Face is computed/evaluated
1239 // -------------------------------------------------------
1241 std::vector<int> aVec;
1243 SMESH_subMesh* srcSubMesh = srcMesh->GetSubMesh( srcFace );
1244 if ( srcSubMesh->IsMeshComputed() )
1246 aVec.resize( SMDSEntity_Last, 0 );
1247 aVec[SMDSEntity_Node] = srcSubMesh->GetSubMeshDS()->NbNodes();
1249 SMDS_ElemIteratorPtr elemIt = srcSubMesh->GetSubMeshDS()->GetElements();
1250 while ( elemIt->more() )
1251 aVec[ elemIt->next()->GetEntityType() ]++;
1255 MapShapeNbElems tmpResMap;
1256 MapShapeNbElems& srcResMap = (srcMesh == tgtMesh) ? aResMap : tmpResMap;
1257 if ( !_gen->Evaluate( *srcMesh, srcShape, srcResMap ))
1258 return error(COMPERR_BAD_INPUT_MESH,"Source mesh not evaluatable");
1259 aVec = srcResMap[ srcSubMesh ];
1261 return error(COMPERR_BAD_INPUT_MESH,"Source mesh is wrongly evaluated");
1264 SMESH_subMesh * sm = theMesh.GetSubMesh(theShape);
1265 aResMap.insert(std::make_pair(sm,aVec));
1271 //=============================================================================
1273 * \brief Sets a default event listener to submesh of the source face
1274 * \param subMesh - submesh where algo is set
1276 * This method is called when a submesh gets HYP_OK algo_state.
1277 * After being set, event listener is notified on each event of a submesh.
1278 * Arranges that CLEAN event is translated from source submesh to
1281 //=============================================================================
1283 void StdMeshers_Projection_2D::SetEventListener(SMESH_subMesh* subMesh)
1285 TAssocTool::SetEventListener( subMesh,
1286 _sourceHypo->GetSourceFace(),
1287 _sourceHypo->GetSourceMesh() );