1 // Copyright (C) 2007-2010 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_Regular_1D.cxx
25 // Moved here from SMESH_Regular_1D.cxx
26 // Author : Paul RASCLE, EDF
30 #include "StdMeshers_CompositeSegment_1D.hxx"
31 #include "StdMeshers_FaceSide.hxx"
32 #include "StdMeshers_AutomaticLength.hxx"
34 #include "SMESH_Gen.hxx"
35 #include "SMESH_Mesh.hxx"
36 #include "SMESH_HypoFilter.hxx"
37 #include "SMESH_subMesh.hxx"
38 #include "SMESH_subMeshEventListener.hxx"
39 #include "SMESH_Comment.hxx"
41 #include "SMDS_MeshElement.hxx"
42 #include "SMDS_MeshNode.hxx"
44 #include "utilities.h"
46 #include <BRepAdaptor_CompCurve.hxx>
47 #include <BRep_Builder.hxx>
48 #include <GCPnts_AbscissaPoint.hxx>
50 #include <TopExp_Explorer.hxx>
51 #include <TopTools_ListIteratorOfListOfShape.hxx>
52 #include <TopTools_MapOfShape.hxx>
54 #include <TopoDS_Edge.hxx>
55 #include <TopoDS_Vertex.hxx>
56 #include <TopoDS_Wire.hxx>
59 #include <Standard_ErrorHandler.hxx>
60 #include <Standard_Failure.hxx>
62 typedef SMESH_Comment TComm;
69 //================================================================================
71 * \brief Search for an edge conjunct to the given one by the vertex
72 * Return NULL if more than 2 edges share the vertex or edges
73 * continuity is less than C1
75 //================================================================================
77 TopoDS_Edge nextC1Edge(const TopoDS_Edge& edge,
82 TopTools_MapOfShape edgeCounter;
83 edgeCounter.Add( edge );
85 if (edge.Orientation() <= TopAbs_REVERSED) // FORWARD || REVERSED
86 v = forward ? TopExp::LastVertex(edge,true) : TopExp::FirstVertex(edge,true);
88 TopoDS_Iterator vIt (edge);
90 for (; vIt.More(); vIt.Next())
91 v = TopoDS::Vertex(vIt.Value()); // last
93 v = TopoDS::Vertex(vIt.Value()); // first
95 TopTools_ListIteratorOfListOfShape ancestIt = aMesh.GetAncestors( v );
96 for ( ; ancestIt.More(); ancestIt.Next() )
98 const TopoDS_Shape & ancestor = ancestIt.Value();
99 if ( ancestor.ShapeType() == TopAbs_EDGE && edgeCounter.Add( ancestor ))
100 eNext = TopoDS::Edge( ancestor );
102 if ( edgeCounter.Extent() < 3 && !eNext.IsNull() ) {
103 if ( SMESH_Algo::IsContinuous( edge, eNext )) {
104 // care of orientation
106 if (eNext.Orientation() <= TopAbs_REVERSED) // FORWARD || REVERSED
107 vn = forward ? TopExp::FirstVertex(eNext,true) : TopExp::LastVertex(eNext,true);
109 TopoDS_Iterator vIt (eNext);
111 vn = TopoDS::Vertex(vIt.Value()); // first
113 for (; vIt.More(); vIt.Next())
114 vn = TopoDS::Vertex(vIt.Value()); // last
117 bool reverse = (!v.IsSame(vn));
123 return TopoDS_Edge();
126 //================================================================================
128 * \brief Update submeshes state for all edges and internal vertices,
129 * make them look computed even if none edge or node is set on them
131 //================================================================================
133 void careOfSubMeshes( StdMeshers_FaceSide& side, EventListener* eListener)
135 if ( side.NbEdges() < 2)
137 for ( int iE = 0; iE < side.NbEdges(); ++iE )
139 // set listener and its data
140 EventListenerData * listenerData = new EventListenerData(true);
141 const TopoDS_Edge& edge = side.Edge( iE );
142 SMESH_subMesh * sm = side.GetMesh()->GetSubMesh( edge );
143 sm->SetEventListener( eListener, listenerData, sm );
144 // add edge submesh to the data
145 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
146 if ( sm->GetComputeState() != SMESH_subMesh::COMPUTE_OK ) {
147 sm->SetIsAlwaysComputed( true );
148 listenerData->mySubMeshes.push_back( sm );
150 // add internal vertex submesh to the data
153 TopoDS_Vertex V = side.FirstVertex( iE );
154 sm = side.GetMesh()->GetSubMesh( V );
155 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
156 if ( sm->GetComputeState() != SMESH_subMesh::COMPUTE_OK )
157 sm->SetIsAlwaysComputed( true );
158 listenerData->mySubMeshes.push_back( sm );
163 //================================================================================
165 * \brief Class used to restore nodes on internal vertices of a complex side
166 * when StdMeshers_CompositeSegment_1D algorithm is removed
168 //================================================================================
170 struct VertexNodesRestoringListener : public SMESH_subMeshEventListener
172 VertexNodesRestoringListener():SMESH_subMeshEventListener(0) // won't be deleted by submesh
175 * \brief Restore nodes on internal vertices of a complex side
176 * \param event - algo_event or compute_event itself (of SMESH_subMesh)
177 * \param eventType - ALGO_EVENT or COMPUTE_EVENT (of SMESH_subMesh)
178 * \param subMesh - the submesh where the event occures
179 * \param data - listener data stored in the subMesh
180 * \param hyp - hypothesis, if eventType is algo_event
182 void ProcessEvent(const int event,
184 SMESH_subMesh* subMesh,
185 EventListenerData* data,
186 const SMESH_Hypothesis* /*hyp*/)
188 bool hypRemoved = ( eventType == SMESH_subMesh::ALGO_EVENT &&
189 subMesh->GetAlgoState() != SMESH_subMesh::HYP_OK );
190 if ( hypRemoved && data )
192 list<SMESH_subMesh*>::iterator smIt = data->mySubMeshes.begin();
193 for ( ; smIt != data->mySubMeshes.end(); ++smIt )
195 if ( SMESH_subMesh* sm = *smIt ) {
196 sm->SetIsAlwaysComputed( false );
197 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
201 // at study restoration:
202 // check if edge submesh must have _alwaysComputed flag
203 else if ( event == SMESH_subMesh::SUBMESH_RESTORED &&
204 eventType == SMESH_subMesh::COMPUTE_EVENT )
206 if ( !subMesh->GetEventListenerData( this )) { // not yet checked
207 SMESHDS_Mesh * meshDS = subMesh->GetFather()->GetMeshDS();
208 if ( meshDS->NbNodes() > 0 ) {
209 // check if there are nodes on all vertices
210 bool hasNodesOnVerext = true;
211 SMESH_subMeshIteratorPtr smIt = subMesh->getDependsOnIterator(false,false);
212 while ( hasNodesOnVerext && smIt->more() ) {
213 SMESH_subMesh* sm = smIt->next();
214 hasNodesOnVerext = ( sm->GetSubMeshDS() && sm->GetSubMeshDS()->NbNodes() );
216 if ( !hasNodesOnVerext ) {
217 // check if an edge is a part of a complex side
219 TopoDS_Edge edge = TopoDS::Edge( subMesh->GetSubShape() );
220 auto_ptr< StdMeshers_FaceSide > side
221 ( StdMeshers_CompositeSegment_1D::GetFaceSide(*subMesh->GetFather(),
222 edge, face, false ));
223 if ( side->NbEdges() > 1 && side->NbSegments() )
224 careOfSubMeshes( *side, this );
230 }; // struct VertexNodesRestoringListener
233 //=============================================================================
237 //=============================================================================
239 StdMeshers_CompositeSegment_1D::StdMeshers_CompositeSegment_1D(int hypId,
242 :StdMeshers_Regular_1D(hypId, studyId, gen)
244 MESSAGE("StdMeshers_CompositeSegment_1D::StdMeshers_CompositeSegment_1D");
245 _name = "CompositeSegment_1D";
246 _EventListener = new VertexNodesRestoringListener();
249 //=============================================================================
253 //=============================================================================
255 StdMeshers_CompositeSegment_1D::~StdMeshers_CompositeSegment_1D()
257 delete _EventListener;
260 //=============================================================================
262 * \brief Sets event listener to submeshes if necessary
263 * \param subMesh - submesh where algo is set
265 * This method is called when a submesh gets HYP_OK algo_state.
266 * After being set, event listener is notified on each event of a submesh.
268 //=============================================================================
270 void StdMeshers_CompositeSegment_1D::SetEventListener(SMESH_subMesh* subMesh)
272 // issue 0020279. Set "_alwaysComputed" flag to the submeshes of internal
273 // vertices of composite edge in order to avoid creation of vertices on
274 // them for the sake of stability.
276 // check if "_alwaysComputed" is not yet set
277 bool isAlwaysComputed = false;
278 SMESH_subMeshIteratorPtr smIt = subMesh->getDependsOnIterator(false,false);
279 while ( !isAlwaysComputed && smIt->more() )
280 isAlwaysComputed = smIt->next()->IsAlwaysComputed();
282 if ( !isAlwaysComputed )
284 // check if an edge is a part of a complex side
286 TopoDS_Edge edge = TopoDS::Edge( subMesh->GetSubShape() );
287 auto_ptr< StdMeshers_FaceSide > side
288 ( StdMeshers_CompositeSegment_1D::GetFaceSide(*subMesh->GetFather(),edge, face, false ));
289 if ( side->NbEdges() > 1 ) { // complex
291 // set _alwaysComputed to vertices
292 for ( int iE = 1; iE < side->NbEdges(); ++iE )
294 TopoDS_Vertex V = side->FirstVertex( iE );
295 SMESH_subMesh* sm = side->GetMesh()->GetSubMesh( V );
296 sm->SetIsAlwaysComputed( true );
300 // set listener that will remove _alwaysComputed from submeshes at algorithm change
301 subMesh->SetEventListener( _EventListener, 0, subMesh);
302 StdMeshers_Regular_1D::SetEventListener( subMesh );
305 //=============================================================================
307 * \brief Return a face side the edge belongs to
309 //=============================================================================
311 StdMeshers_FaceSide *
312 StdMeshers_CompositeSegment_1D::GetFaceSide(SMESH_Mesh& aMesh,
313 const TopoDS_Edge& anEdge,
314 const TopoDS_Face& aFace,
315 const bool ignoreMeshed)
317 list< TopoDS_Edge > edges;
318 edges.push_back( anEdge );
320 list <const SMESHDS_Hypothesis *> hypList;
321 SMESH_Algo* theAlgo = aMesh.GetGen()->GetAlgo( aMesh, anEdge );
322 if ( theAlgo ) hypList = theAlgo->GetUsedHypothesis(aMesh, anEdge, false);
323 for ( int forward = 0; forward < 2; ++forward )
325 TopoDS_Edge eNext = nextC1Edge( anEdge, aMesh, forward );
326 while ( !eNext.IsNull() ) {
327 if ( ignoreMeshed ) {
328 // eNext must not have computed mesh
329 if ( SMESHDS_SubMesh* sm = aMesh.GetMeshDS()->MeshElements(eNext) )
330 if ( sm->NbNodes() || sm->NbElements() )
333 // eNext must have same hypotheses
334 SMESH_Algo* algo = aMesh.GetGen()->GetAlgo( aMesh, eNext );
336 string(theAlgo->GetName()) != algo->GetName() ||
337 hypList != algo->GetUsedHypothesis(aMesh, eNext, false))
340 edges.push_back( eNext );
342 edges.push_front( eNext );
343 eNext = nextC1Edge( eNext, aMesh, forward );
346 return new StdMeshers_FaceSide( aFace, edges, &aMesh, true, false );
349 //=============================================================================
353 //=============================================================================
355 bool StdMeshers_CompositeSegment_1D::Compute(SMESH_Mesh & aMesh,
356 const TopoDS_Shape & aShape)
358 TopoDS_Edge edge = TopoDS::Edge( aShape );
359 SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
361 // Get edges to be discretized as a whole
362 TopoDS_Face nullFace;
363 auto_ptr< StdMeshers_FaceSide > side( GetFaceSide(aMesh, edge, nullFace, true ));
364 //side->dump("IN COMPOSITE SEG");
366 if ( side->NbEdges() < 2 )
367 return StdMeshers_Regular_1D::Compute( aMesh, aShape );
369 // update segment lenght computed by StdMeshers_AutomaticLength
370 const list <const SMESHDS_Hypothesis * > & hyps = GetUsedHypothesis(aMesh, aShape);
371 if ( !hyps.empty() ) {
372 StdMeshers_AutomaticLength * autoLenHyp = const_cast<StdMeshers_AutomaticLength *>
373 (dynamic_cast <const StdMeshers_AutomaticLength * >(hyps.front()));
375 _value[ BEG_LENGTH_IND ]= autoLenHyp->GetLength( &aMesh, side->Length() );
378 // Compute node parameters
379 auto_ptr< BRepAdaptor_CompCurve > C3d ( side->GetCurve3d() );
380 double f = C3d->FirstParameter(), l = C3d->LastParameter();
381 list< double > params;
382 if ( !computeInternalParameters ( aMesh, *C3d, side->Length(), f, l, params, false ))
385 // Redistribute parameters near ends
386 TopoDS_Vertex VFirst = side->FirstVertex();
387 TopoDS_Vertex VLast = side->LastVertex();
388 redistributeNearVertices( aMesh, *C3d, side->Length(), params, VFirst, VLast );
390 params.push_front(f);
392 int nbNodes = params.size();
396 const SMDS_MeshNode * nFirst = SMESH_Algo::VertexNode( VFirst, meshDS );
397 const SMDS_MeshNode * nLast = SMESH_Algo::VertexNode( VLast, meshDS );
399 return error(COMPERR_BAD_INPUT_MESH, TComm("No node on vertex ")
400 <<meshDS->ShapeToIndex(VFirst));
402 return error(COMPERR_BAD_INPUT_MESH, TComm("No node on vertex ")
403 <<meshDS->ShapeToIndex(VLast));
405 vector<const SMDS_MeshNode*> nodes( nbNodes, (const SMDS_MeshNode*)0 );
406 nodes.front() = nFirst;
407 nodes.back() = nLast;
409 // create internal nodes
410 list< double >::iterator parIt = params.begin();
411 double prevPar = *parIt;
413 for ( int iN = 0; parIt != params.end(); ++iN, ++parIt)
415 if ( !nodes[ iN ] ) {
416 gp_Pnt p = C3d->Value( *parIt );
417 SMDS_MeshNode* n = meshDS->AddNode( p.X(), p.Y(), p.Z());
418 C3d->Edge( *parIt, edge, u );
419 meshDS->SetNodeOnEdge( n, edge, u );
420 // cout << "new NODE: par="<<*parIt<<" ePar="<<u<<" e="<<edge.TShape().operator->()
421 // << " " << n << endl;
426 double mPar = ( prevPar + *parIt )/2;
427 if ( _quadraticMesh ) {
428 // create medium node
429 double segLen = GCPnts_AbscissaPoint::Length(*C3d, prevPar, *parIt);
430 GCPnts_AbscissaPoint ruler( *C3d, segLen/2., prevPar );
431 if ( ruler.IsDone() )
432 mPar = ruler.Parameter();
433 gp_Pnt p = C3d->Value( mPar );
434 SMDS_MeshNode* n = meshDS->AddNode( p.X(), p.Y(), p.Z());
435 //cout << "new NODE "<< n << endl;
436 meshDS->SetNodeOnEdge( n, edge, u );
437 SMDS_MeshEdge * seg = meshDS->AddEdge(nodes[ iN-1 ], nodes[ iN ], n);
438 meshDS->SetMeshElementOnShape(seg, edge);
441 C3d->Edge( mPar, edge, u );
442 SMDS_MeshEdge * seg = meshDS->AddEdge(nodes[ iN-1 ], nodes[ iN ]);
443 meshDS->SetMeshElementOnShape(seg, edge);
449 // remove nodes on internal vertices
450 for ( int iE = 1; iE < side->NbEdges(); ++iE )
452 TopoDS_Vertex V = side->FirstVertex( iE );
453 while ( const SMDS_MeshNode * n = SMESH_Algo::VertexNode( V, meshDS ))
454 meshDS->RemoveNode( n );
457 // Update submeshes state for all edges and internal vertices,
458 // make them look computed even if none edge or node is set on them
459 careOfSubMeshes( *side, _EventListener );