1 // Copyright (C) 2007-2012 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_CompositeSegment_1D.cxx
27 #include "StdMeshers_CompositeSegment_1D.hxx"
28 #include "StdMeshers_FaceSide.hxx"
29 #include "StdMeshers_AutomaticLength.hxx"
31 #include "SMESH_Gen.hxx"
32 #include "SMESH_Mesh.hxx"
33 #include "SMESH_HypoFilter.hxx"
34 #include "SMESH_subMesh.hxx"
35 #include "SMESH_subMeshEventListener.hxx"
36 #include "SMESH_Comment.hxx"
38 #include "SMDS_MeshElement.hxx"
39 #include "SMDS_MeshNode.hxx"
41 #include "utilities.h"
43 #include <BRepAdaptor_CompCurve.hxx>
44 #include <BRep_Builder.hxx>
45 #include <GCPnts_AbscissaPoint.hxx>
47 #include <TopExp_Explorer.hxx>
48 #include <TopTools_ListIteratorOfListOfShape.hxx>
49 #include <TopTools_MapOfShape.hxx>
51 #include <TopoDS_Edge.hxx>
52 #include <TopoDS_Vertex.hxx>
53 #include <TopoDS_Wire.hxx>
56 #include <Standard_ErrorHandler.hxx>
57 #include <Standard_Failure.hxx>
59 typedef SMESH_Comment TComm;
66 //================================================================================
68 * \brief Search for an edge conjunct to the given one by the vertex
69 * Return NULL if more than 2 edges share the vertex or edges
70 * continuity is less than C1
72 //================================================================================
74 TopoDS_Edge nextC1Edge(TopoDS_Edge edge,
78 if (edge.Orientation() > TopAbs_REVERSED) // INTERNAL
79 edge.Orientation( TopAbs_FORWARD );
81 TopTools_MapOfShape edgeCounter;
82 edgeCounter.Add( edge );
83 TopoDS_Vertex v = forward ? TopExp::LastVertex(edge,true) : TopExp::FirstVertex(edge,true);
84 TopTools_ListIteratorOfListOfShape ancestIt = aMesh.GetAncestors( v );
85 for ( ; ancestIt.More(); ancestIt.Next() )
87 const TopoDS_Shape & ancestor = ancestIt.Value();
88 if ( ancestor.ShapeType() == TopAbs_EDGE && edgeCounter.Add( ancestor ))
89 eNext = TopoDS::Edge( ancestor );
91 if ( edgeCounter.Extent() < 3 && !eNext.IsNull() ) {
92 if ( SMESH_Algo::IsContinuous( edge, eNext )) {
93 // care of orientation
94 if (eNext.Orientation() > TopAbs_REVERSED) // INTERNAL
95 eNext.Orientation( TopAbs_FORWARD );
97 forward ? TopExp::FirstVertex(eNext,true) : TopExp::LastVertex(eNext,true);
98 bool reverse = (!v.IsSame(vn));
104 return TopoDS_Edge();
107 //================================================================================
109 * \brief Update submeshes state for all edges and internal vertices,
110 * make them look computed even if none edge or node is set on them
112 //================================================================================
114 void careOfSubMeshes( StdMeshers_FaceSide& side, EventListener* eListener)
116 if ( side.NbEdges() < 2)
118 for ( int iE = 0; iE < side.NbEdges(); ++iE )
120 // set listener and its data
121 EventListenerData * listenerData = new EventListenerData(true);
122 const TopoDS_Edge& edge = side.Edge( iE );
123 SMESH_subMesh * sm = side.GetMesh()->GetSubMesh( edge );
124 sm->SetEventListener( eListener, listenerData, sm );
125 // add edge submesh to the data
126 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
127 if ( sm->GetComputeState() != SMESH_subMesh::COMPUTE_OK ) {
128 sm->SetIsAlwaysComputed( true );
129 listenerData->mySubMeshes.push_back( sm );
131 // add internal vertex submesh to the data
134 TopoDS_Vertex V = side.FirstVertex( iE );
135 sm = side.GetMesh()->GetSubMesh( V );
136 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
137 if ( sm->GetComputeState() != SMESH_subMesh::COMPUTE_OK )
138 sm->SetIsAlwaysComputed( true );
139 listenerData->mySubMeshes.push_back( sm );
144 //================================================================================
146 * \brief Class used to restore nodes on internal vertices of a complex side
147 * when StdMeshers_CompositeSegment_1D algorithm is removed
149 //================================================================================
151 struct VertexNodesRestoringListener : public SMESH_subMeshEventListener
153 VertexNodesRestoringListener():
154 SMESH_subMeshEventListener(0, // won't be deleted by submesh
155 "StdMeshers_CompositeSegment_1D::VertexNodesRestoringListener")
158 * \brief Restore nodes on internal vertices of a complex side
159 * \param event - algo_event or compute_event itself (of SMESH_subMesh)
160 * \param eventType - ALGO_EVENT or COMPUTE_EVENT (of SMESH_subMesh)
161 * \param subMesh - the submesh where the event occures
162 * \param data - listener data stored in the subMesh
163 * \param hyp - hypothesis, if eventType is algo_event
165 void ProcessEvent(const int event,
167 SMESH_subMesh* subMesh,
168 EventListenerData* data,
169 const SMESH_Hypothesis* /*hyp*/)
171 if ( data && eventType == SMESH_subMesh::ALGO_EVENT )
174 if ( subMesh->GetAlgoState() != SMESH_subMesh::HYP_OK )
177 SMESH_Algo* algo = subMesh->GetAlgo();
178 hypRemoved = ( string( algo->GetName() ) != StdMeshers_CompositeSegment_1D::AlgoName());
182 list<SMESH_subMesh*>::iterator smIt = data->mySubMeshes.begin();
183 for ( ; smIt != data->mySubMeshes.end(); ++smIt )
184 if ( SMESH_subMesh* sm = *smIt ) {
185 sm->SetIsAlwaysComputed( false );
186 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
190 // at study restoration:
191 // check if edge submesh must have _alwaysComputed flag
192 else if ( event == SMESH_subMesh::SUBMESH_RESTORED &&
193 eventType == SMESH_subMesh::COMPUTE_EVENT )
195 if ( !subMesh->GetEventListenerData( this )) { // not yet checked
196 SMESHDS_Mesh * meshDS = subMesh->GetFather()->GetMeshDS();
197 if ( meshDS->NbNodes() > 0 ) {
198 // check if there are nodes on all vertices
199 bool hasNodesOnVerext = true;
200 SMESH_subMeshIteratorPtr smIt = subMesh->getDependsOnIterator(false,false);
201 while ( hasNodesOnVerext && smIt->more() ) {
202 SMESH_subMesh* sm = smIt->next();
203 hasNodesOnVerext = ( sm->GetSubMeshDS() && sm->GetSubMeshDS()->NbNodes() );
205 if ( !hasNodesOnVerext ) {
206 // check if an edge is a part of a complex side
208 TopoDS_Edge edge = TopoDS::Edge( subMesh->GetSubShape() );
209 auto_ptr< StdMeshers_FaceSide > side
210 ( StdMeshers_CompositeSegment_1D::GetFaceSide(*subMesh->GetFather(),
211 edge, face, false ));
212 if ( side->NbEdges() > 1 && side->NbSegments() )
213 careOfSubMeshes( *side, this );
219 }; // struct VertexNodesRestoringListener
222 //=============================================================================
226 //=============================================================================
228 StdMeshers_CompositeSegment_1D::StdMeshers_CompositeSegment_1D(int hypId,
231 :StdMeshers_Regular_1D(hypId, studyId, gen)
233 MESSAGE("StdMeshers_CompositeSegment_1D::StdMeshers_CompositeSegment_1D");
235 _EventListener = new VertexNodesRestoringListener();
238 //=======================================================================
239 //function : AlgoName
240 //purpose : Returns algo type name
241 //=======================================================================
243 std::string StdMeshers_CompositeSegment_1D::AlgoName()
245 return "CompositeSegment_1D";
247 //=============================================================================
251 //=============================================================================
253 StdMeshers_CompositeSegment_1D::~StdMeshers_CompositeSegment_1D()
255 delete _EventListener;
258 //=============================================================================
260 * \brief Sets event listener to submeshes if necessary
261 * \param subMesh - submesh where algo is set
263 * This method is called when a submesh gets HYP_OK algo_state.
264 * After being set, event listener is notified on each event of a submesh.
266 //=============================================================================
268 void StdMeshers_CompositeSegment_1D::SetEventListener(SMESH_subMesh* subMesh)
270 // issue 0020279. Set "_alwaysComputed" flag to the submeshes of internal
271 // vertices of composite edge in order to avoid creation of vertices on
272 // them for the sake of stability.
274 // check if "_alwaysComputed" is not yet set
275 bool isAlwaysComputed = false;
276 SMESH_subMeshIteratorPtr smIt = subMesh->getDependsOnIterator(false,false);
277 while ( !isAlwaysComputed && smIt->more() )
278 isAlwaysComputed = smIt->next()->IsAlwaysComputed();
280 if ( !isAlwaysComputed )
282 // check if an edge is a part of a complex side
284 TopoDS_Edge edge = TopoDS::Edge( subMesh->GetSubShape() );
285 auto_ptr< StdMeshers_FaceSide > side
286 ( StdMeshers_CompositeSegment_1D::GetFaceSide(*subMesh->GetFather(),edge, face, false ));
287 if ( side->NbEdges() > 1 ) { // complex
289 // set _alwaysComputed to vertices
290 for ( int iE = 1; iE < side->NbEdges(); ++iE )
292 TopoDS_Vertex V = side->FirstVertex( iE );
293 SMESH_subMesh* sm = side->GetMesh()->GetSubMesh( V );
294 sm->SetIsAlwaysComputed( true );
298 // set listener that will remove _alwaysComputed from submeshes at algorithm change
299 subMesh->SetEventListener( _EventListener, 0, subMesh);
300 StdMeshers_Regular_1D::SetEventListener( subMesh );
303 //=============================================================================
305 * \brief Return a face side the edge belongs to
307 //=============================================================================
309 StdMeshers_FaceSide *
310 StdMeshers_CompositeSegment_1D::GetFaceSide(SMESH_Mesh& aMesh,
311 const TopoDS_Edge& anEdge,
312 const TopoDS_Face& aFace,
313 const bool ignoreMeshed)
315 list< TopoDS_Edge > edges;
316 if ( anEdge.Orientation() <= TopAbs_REVERSED )
317 edges.push_back( anEdge );
319 edges.push_back( TopoDS::Edge( anEdge.Oriented( TopAbs_FORWARD ))); // PAL21718
321 list <const SMESHDS_Hypothesis *> hypList;
322 SMESH_Algo* theAlgo = aMesh.GetGen()->GetAlgo( aMesh, anEdge );
323 if ( theAlgo ) hypList = theAlgo->GetUsedHypothesis(aMesh, anEdge, false);
324 for ( int forward = 0; forward < 2; ++forward )
326 TopoDS_Edge eNext = nextC1Edge( edges.back(), aMesh, forward );
327 while ( !eNext.IsNull() ) {
328 if ( ignoreMeshed ) {
329 // eNext must not have computed mesh
330 if ( SMESHDS_SubMesh* sm = aMesh.GetMeshDS()->MeshElements(eNext) )
331 if ( sm->NbNodes() || sm->NbElements() )
334 // eNext must have same hypotheses
335 SMESH_Algo* algo = aMesh.GetGen()->GetAlgo( aMesh, eNext );
337 string(theAlgo->GetName()) != algo->GetName() ||
338 hypList != algo->GetUsedHypothesis(aMesh, eNext, false))
340 if ( std::find( edges.begin(), edges.end(), eNext ) != edges.end() )
343 edges.push_back( eNext );
345 edges.push_front( eNext );
346 eNext = nextC1Edge( eNext, aMesh, forward );
349 return new StdMeshers_FaceSide( aFace, edges, &aMesh, true, false );
352 //=============================================================================
356 //=============================================================================
358 bool StdMeshers_CompositeSegment_1D::Compute(SMESH_Mesh & aMesh,
359 const TopoDS_Shape & aShape)
361 TopoDS_Edge edge = TopoDS::Edge( aShape );
362 SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
364 // Get edges to be discretized as a whole
365 TopoDS_Face nullFace;
366 auto_ptr< StdMeshers_FaceSide > side( GetFaceSide(aMesh, edge, nullFace, true ));
367 //side->dump("IN COMPOSITE SEG");
369 if ( side->NbEdges() < 2 )
370 return StdMeshers_Regular_1D::Compute( aMesh, aShape );
372 // update segment lenght computed by StdMeshers_AutomaticLength
373 const list <const SMESHDS_Hypothesis * > & hyps = GetUsedHypothesis(aMesh, aShape);
374 if ( !hyps.empty() ) {
375 StdMeshers_AutomaticLength * autoLenHyp = const_cast<StdMeshers_AutomaticLength *>
376 (dynamic_cast <const StdMeshers_AutomaticLength * >(hyps.front()));
378 _value[ BEG_LENGTH_IND ]= autoLenHyp->GetLength( &aMesh, side->Length() );
381 // Compute node parameters
382 auto_ptr< BRepAdaptor_CompCurve > C3d ( side->GetCurve3d() );
383 double f = C3d->FirstParameter(), l = C3d->LastParameter();
384 list< double > params;
385 if ( !computeInternalParameters ( aMesh, *C3d, side->Length(), f, l, params, false ))
388 // Redistribute parameters near ends
389 TopoDS_Vertex VFirst = side->FirstVertex();
390 TopoDS_Vertex VLast = side->LastVertex();
391 redistributeNearVertices( aMesh, *C3d, side->Length(), params, VFirst, VLast );
393 params.push_front(f);
395 int nbNodes = params.size();
399 // compute and get nodes on extremity VERTEX'es
400 SMESH_subMesh* smVFirst = aMesh.GetSubMesh( VFirst );
401 smVFirst->SetIsAlwaysComputed( false );
402 smVFirst->ComputeStateEngine( SMESH_subMesh::COMPUTE );
404 SMESH_subMesh* smVLast = aMesh.GetSubMesh( VLast );
405 smVLast->SetIsAlwaysComputed( false );
406 smVLast->ComputeStateEngine( SMESH_subMesh::COMPUTE );
408 const SMDS_MeshNode * nFirst = SMESH_Algo::VertexNode( VFirst, meshDS );
409 const SMDS_MeshNode * nLast = SMESH_Algo::VertexNode( VLast, meshDS );
411 return error(COMPERR_BAD_INPUT_MESH, TComm("No node on vertex ")
412 <<meshDS->ShapeToIndex(VFirst));
414 return error(COMPERR_BAD_INPUT_MESH, TComm("No node on vertex ")
415 <<meshDS->ShapeToIndex(VLast));
417 vector<const SMDS_MeshNode*> nodes( nbNodes, (const SMDS_MeshNode*)0 );
418 nodes.front() = nFirst;
419 nodes.back() = nLast;
421 // create internal nodes
422 list< double >::iterator parIt = params.begin();
423 double prevPar = *parIt;
425 for ( int iN = 0; parIt != params.end(); ++iN, ++parIt)
427 if ( !nodes[ iN ] ) {
428 gp_Pnt p = C3d->Value( *parIt );
429 SMDS_MeshNode* n = meshDS->AddNode( p.X(), p.Y(), p.Z());
430 C3d->Edge( *parIt, edge, u );
431 meshDS->SetNodeOnEdge( n, edge, u );
432 // cout << "new NODE: par="<<*parIt<<" ePar="<<u<<" e="<<edge.TShape().operator->()
433 // << " " << n << endl;
438 double mPar = ( prevPar + *parIt )/2;
439 if ( _quadraticMesh ) {
440 // create medium node
441 double segLen = GCPnts_AbscissaPoint::Length(*C3d, prevPar, *parIt);
442 GCPnts_AbscissaPoint ruler( *C3d, segLen/2., prevPar );
443 if ( ruler.IsDone() )
444 mPar = ruler.Parameter();
445 gp_Pnt p = C3d->Value( mPar );
446 SMDS_MeshNode* n = meshDS->AddNode( p.X(), p.Y(), p.Z());
447 //cout << "new NODE "<< n << endl;
448 meshDS->SetNodeOnEdge( n, edge, u );
449 SMDS_MeshEdge * seg = meshDS->AddEdge(nodes[ iN-1 ], nodes[ iN ], n);
450 meshDS->SetMeshElementOnShape(seg, edge);
453 C3d->Edge( mPar, edge, u );
454 SMDS_MeshEdge * seg = meshDS->AddEdge(nodes[ iN-1 ], nodes[ iN ]);
455 meshDS->SetMeshElementOnShape(seg, edge);
461 // remove nodes on internal vertices
462 for ( int iE = 1; iE < side->NbEdges(); ++iE )
464 TopoDS_Vertex V = side->FirstVertex( iE );
465 while ( const SMDS_MeshNode * n = SMESH_Algo::VertexNode( V, meshDS ))
466 meshDS->RemoveNode( n );
469 // Update submeshes state for all edges and internal vertices,
470 // make them look computed even if none edge or node is set on them
471 careOfSubMeshes( *side, _EventListener );