1 // Copyright (C) 2007-2008 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
22 // SMESH SMESH : implementaion of SMESH idl descriptions
23 // File : StdMeshers_Regular_1D.cxx
24 // Moved here from SMESH_Regular_1D.cxx
25 // Author : Paul RASCLE, EDF
29 #include "StdMeshers_CompositeSegment_1D.hxx"
30 #include "StdMeshers_FaceSide.hxx"
31 #include "StdMeshers_AutomaticLength.hxx"
33 #include "SMESH_Gen.hxx"
34 #include "SMESH_Mesh.hxx"
35 #include "SMESH_HypoFilter.hxx"
36 #include "SMESH_subMesh.hxx"
37 #include "SMESH_subMeshEventListener.hxx"
38 #include "SMESH_Comment.hxx"
40 #include "SMDS_MeshElement.hxx"
41 #include "SMDS_MeshNode.hxx"
43 #include "utilities.h"
45 #include <BRepAdaptor_CompCurve.hxx>
46 #include <BRep_Builder.hxx>
47 #include <GCPnts_AbscissaPoint.hxx>
49 #include <TopExp_Explorer.hxx>
50 #include <TopTools_ListIteratorOfListOfShape.hxx>
51 #include <TopTools_MapOfShape.hxx>
53 #include <TopoDS_Edge.hxx>
54 #include <TopoDS_Vertex.hxx>
55 #include <TopoDS_Wire.hxx>
58 #include <Standard_ErrorHandler.hxx>
59 #include <Standard_Failure.hxx>
61 typedef SMESH_Comment TComm;
68 //================================================================================
70 * \brief Search for an edge conjunct to the given one by the vertex
71 * Return NULL if more than 2 edges share the vertex or edges
72 * continuity is less than C1
74 //================================================================================
76 TopoDS_Edge nextC1Edge(const TopoDS_Edge& edge,
81 TopTools_MapOfShape edgeCounter;
82 edgeCounter.Add( edge );
84 if (edge.Orientation() <= TopAbs_REVERSED) // FORWARD || REVERSED
85 v = forward ? TopExp::LastVertex(edge,true) : TopExp::FirstVertex(edge,true);
87 TopoDS_Iterator vIt (edge);
89 for (; vIt.More(); vIt.Next())
90 v = TopoDS::Vertex(vIt.Value()); // last
92 v = TopoDS::Vertex(vIt.Value()); // first
94 TopTools_ListIteratorOfListOfShape ancestIt = aMesh.GetAncestors( v );
95 for ( ; ancestIt.More(); ancestIt.Next() )
97 const TopoDS_Shape & ancestor = ancestIt.Value();
98 if ( ancestor.ShapeType() == TopAbs_EDGE && edgeCounter.Add( ancestor ))
99 eNext = TopoDS::Edge( ancestor );
101 if ( edgeCounter.Extent() < 3 && !eNext.IsNull() ) {
102 if ( SMESH_Algo::IsContinuous( edge, eNext )) {
103 // care of orientation
105 if (eNext.Orientation() <= TopAbs_REVERSED) // FORWARD || REVERSED
106 vn = forward ? TopExp::FirstVertex(eNext,true) : TopExp::LastVertex(eNext,true);
108 TopoDS_Iterator vIt (eNext);
110 vn = TopoDS::Vertex(vIt.Value()); // first
112 for (; vIt.More(); vIt.Next())
113 vn = TopoDS::Vertex(vIt.Value()); // last
116 bool reverse = (!v.IsSame(vn));
122 return TopoDS_Edge();
125 //================================================================================
127 * \brief Update submeshes state for all edges and internal vertices,
128 * make them look computed even if none edge or node is set on them
130 //================================================================================
132 void careOfSubMeshes( StdMeshers_FaceSide& side, EventListener* eListener)
134 if ( side.NbEdges() < 2)
136 for ( int iE = 0; iE < side.NbEdges(); ++iE )
138 // set listener and its data
139 EventListenerData * listenerData = new EventListenerData(true);
140 const TopoDS_Edge& edge = side.Edge( iE );
141 SMESH_subMesh * sm = side.GetMesh()->GetSubMesh( edge );
142 sm->SetEventListener( eListener, listenerData, sm );
143 // add edge submesh to the data
144 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
145 if ( sm->GetComputeState() != SMESH_subMesh::COMPUTE_OK ) {
146 sm->SetIsAlwaysComputed( true );
147 listenerData->mySubMeshes.push_back( sm );
149 // add internal vertex submesh to the data
152 TopoDS_Vertex V = side.FirstVertex( iE );
153 sm = side.GetMesh()->GetSubMesh( V );
154 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
155 if ( sm->GetComputeState() != SMESH_subMesh::COMPUTE_OK )
156 sm->SetIsAlwaysComputed( true );
157 listenerData->mySubMeshes.push_back( sm );
162 //================================================================================
164 * \brief Class used to restore nodes on internal vertices of a complex side
165 * when StdMeshers_CompositeSegment_1D algorithm is removed
167 //================================================================================
169 struct VertexNodesRestoringListener : public SMESH_subMeshEventListener
171 VertexNodesRestoringListener():SMESH_subMeshEventListener(0) // won't be deleted by submesh
174 * \brief Restore nodes on internal vertices of a complex side
175 * \param event - algo_event or compute_event itself (of SMESH_subMesh)
176 * \param eventType - ALGO_EVENT or COMPUTE_EVENT (of SMESH_subMesh)
177 * \param subMesh - the submesh where the event occures
178 * \param data - listener data stored in the subMesh
179 * \param hyp - hypothesis, if eventType is algo_event
181 void ProcessEvent(const int event,
183 SMESH_subMesh* subMesh,
184 EventListenerData* data,
185 const SMESH_Hypothesis* /*hyp*/)
187 bool hypRemoved = ( eventType == SMESH_subMesh::ALGO_EVENT &&
188 subMesh->GetAlgoState() != SMESH_subMesh::HYP_OK );
189 if ( hypRemoved && data )
191 list<SMESH_subMesh*>::iterator smIt = data->mySubMeshes.begin();
192 for ( ; smIt != data->mySubMeshes.end(); ++smIt )
194 if ( SMESH_subMesh* sm = *smIt ) {
195 sm->SetIsAlwaysComputed( false );
196 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
200 // at study restoration:
201 // check if edge submesh must have _alwaysComputed flag
202 else if ( event == SMESH_subMesh::SUBMESH_RESTORED &&
203 eventType == SMESH_subMesh::COMPUTE_EVENT )
205 if ( !subMesh->GetEventListenerData( this )) { // not yet checked
206 SMESHDS_Mesh * meshDS = subMesh->GetFather()->GetMeshDS();
207 if ( meshDS->NbNodes() > 0 ) {
208 // check if there are nodes on all vertices
209 bool hasNodesOnVerext = true;
210 SMESH_subMeshIteratorPtr smIt = subMesh->getDependsOnIterator(false,false);
211 while ( hasNodesOnVerext && smIt->more() ) {
212 SMESH_subMesh* sm = smIt->next();
213 hasNodesOnVerext = ( sm->GetSubMeshDS() && sm->GetSubMeshDS()->NbNodes() );
215 if ( !hasNodesOnVerext ) {
216 // check if an edge is a part of a complex side
218 TopoDS_Edge edge = TopoDS::Edge( subMesh->GetSubShape() );
219 auto_ptr< StdMeshers_FaceSide > side
220 ( StdMeshers_CompositeSegment_1D::GetFaceSide(*subMesh->GetFather(),
221 edge, face, false ));
222 if ( side->NbEdges() > 1 && side->NbSegments() )
223 careOfSubMeshes( *side, this );
229 }; // struct VertexNodesRestoringListener
232 //=============================================================================
236 //=============================================================================
238 StdMeshers_CompositeSegment_1D::StdMeshers_CompositeSegment_1D(int hypId,
241 :StdMeshers_Regular_1D(hypId, studyId, gen)
243 MESSAGE("StdMeshers_CompositeSegment_1D::StdMeshers_CompositeSegment_1D");
244 _name = "CompositeSegment_1D";
245 _EventListener = new VertexNodesRestoringListener();
248 //=============================================================================
252 //=============================================================================
254 StdMeshers_CompositeSegment_1D::~StdMeshers_CompositeSegment_1D()
256 delete _EventListener;
259 //=============================================================================
261 * \brief Sets event listener to submeshes if necessary
262 * \param subMesh - submesh where algo is set
264 * This method is called when a submesh gets HYP_OK algo_state.
265 * After being set, event listener is notified on each event of a submesh.
267 //=============================================================================
269 void StdMeshers_CompositeSegment_1D::SetEventListener(SMESH_subMesh* subMesh)
271 // issue 0020279. Set "_alwaysComputed" flag to the submeshes of internal
272 // vertices of composite edge in order to avoid creation of vertices on
273 // them for the sake of stability.
275 // check if "_alwaysComputed" is not yet set
276 bool isAlwaysComputed = false;
277 SMESH_subMeshIteratorPtr smIt = subMesh->getDependsOnIterator(false,false);
278 while ( !isAlwaysComputed && smIt->more() )
279 isAlwaysComputed = smIt->next()->IsAlwaysComputed();
281 if ( !isAlwaysComputed )
283 // check if an edge is a part of a complex side
285 TopoDS_Edge edge = TopoDS::Edge( subMesh->GetSubShape() );
286 auto_ptr< StdMeshers_FaceSide > side
287 ( StdMeshers_CompositeSegment_1D::GetFaceSide(*subMesh->GetFather(),edge, face, false ));
288 if ( side->NbEdges() > 1 ) { // complex
290 // set _alwaysComputed to vertices
291 for ( int iE = 1; iE < side->NbEdges(); ++iE )
293 TopoDS_Vertex V = side->FirstVertex( iE );
294 SMESH_subMesh* sm = side->GetMesh()->GetSubMesh( V );
295 sm->SetIsAlwaysComputed( true );
299 // set listener that will remove _alwaysComputed from submeshes at algorithm change
300 subMesh->SetEventListener( _EventListener, 0, subMesh);
301 StdMeshers_Regular_1D::SetEventListener( subMesh );
304 //=============================================================================
306 * \brief Return a face side the edge belongs to
308 //=============================================================================
310 StdMeshers_FaceSide *
311 StdMeshers_CompositeSegment_1D::GetFaceSide(SMESH_Mesh& aMesh,
312 const TopoDS_Edge& anEdge,
313 const TopoDS_Face& aFace,
314 const bool ignoreMeshed)
316 list< TopoDS_Edge > edges;
317 edges.push_back( anEdge );
319 list <const SMESHDS_Hypothesis *> hypList;
320 SMESH_Algo* theAlgo = aMesh.GetGen()->GetAlgo( aMesh, anEdge );
321 if ( theAlgo ) hypList = theAlgo->GetUsedHypothesis(aMesh, anEdge, false);
322 for ( int forward = 0; forward < 2; ++forward )
324 TopoDS_Edge eNext = nextC1Edge( anEdge, aMesh, forward );
325 while ( !eNext.IsNull() ) {
326 if ( ignoreMeshed ) {
327 // eNext must not have computed mesh
328 if ( SMESHDS_SubMesh* sm = aMesh.GetMeshDS()->MeshElements(eNext) )
329 if ( sm->NbNodes() || sm->NbElements() )
332 // eNext must have same hypotheses
333 SMESH_Algo* algo = aMesh.GetGen()->GetAlgo( aMesh, eNext );
335 string(theAlgo->GetName()) != algo->GetName() ||
336 hypList != algo->GetUsedHypothesis(aMesh, eNext, false))
339 edges.push_back( eNext );
341 edges.push_front( eNext );
342 eNext = nextC1Edge( eNext, aMesh, forward );
345 return new StdMeshers_FaceSide( aFace, edges, &aMesh, true, false );
348 //=============================================================================
352 //=============================================================================
354 bool StdMeshers_CompositeSegment_1D::Compute(SMESH_Mesh & aMesh,
355 const TopoDS_Shape & aShape)
357 TopoDS_Edge edge = TopoDS::Edge( aShape );
358 SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
360 // Get edges to be discretized as a whole
361 TopoDS_Face nullFace;
362 auto_ptr< StdMeshers_FaceSide > side( GetFaceSide(aMesh, edge, nullFace, true ));
363 //side->dump("IN COMPOSITE SEG");
365 if ( side->NbEdges() < 2 )
366 return StdMeshers_Regular_1D::Compute( aMesh, aShape );
368 // update segment lenght computed by StdMeshers_AutomaticLength
369 const list <const SMESHDS_Hypothesis * > & hyps = GetUsedHypothesis(aMesh, aShape);
370 if ( !hyps.empty() ) {
371 StdMeshers_AutomaticLength * autoLenHyp = const_cast<StdMeshers_AutomaticLength *>
372 (dynamic_cast <const StdMeshers_AutomaticLength * >(hyps.front()));
374 _value[ BEG_LENGTH_IND ]= autoLenHyp->GetLength( &aMesh, side->Length() );
377 // Compute node parameters
378 auto_ptr< BRepAdaptor_CompCurve > C3d ( side->GetCurve3d() );
379 double f = C3d->FirstParameter(), l = C3d->LastParameter();
380 list< double > params;
381 if ( !computeInternalParameters ( aMesh, *C3d, side->Length(), f, l, params, false ))
384 // Redistribute parameters near ends
385 TopoDS_Vertex VFirst = side->FirstVertex();
386 TopoDS_Vertex VLast = side->LastVertex();
387 redistributeNearVertices( aMesh, *C3d, side->Length(), params, VFirst, VLast );
389 params.push_front(f);
391 int nbNodes = params.size();
395 const SMDS_MeshNode * nFirst = SMESH_Algo::VertexNode( VFirst, meshDS );
396 const SMDS_MeshNode * nLast = SMESH_Algo::VertexNode( VLast, meshDS );
398 return error(COMPERR_BAD_INPUT_MESH, TComm("No node on vertex ")
399 <<meshDS->ShapeToIndex(VFirst));
401 return error(COMPERR_BAD_INPUT_MESH, TComm("No node on vertex ")
402 <<meshDS->ShapeToIndex(VLast));
404 vector<const SMDS_MeshNode*> nodes( nbNodes, (const SMDS_MeshNode*)0 );
405 nodes.front() = nFirst;
406 nodes.back() = nLast;
408 // create internal nodes
409 list< double >::iterator parIt = params.begin();
410 double prevPar = *parIt;
412 for ( int iN = 0; parIt != params.end(); ++iN, ++parIt)
414 if ( !nodes[ iN ] ) {
415 gp_Pnt p = C3d->Value( *parIt );
416 SMDS_MeshNode* n = meshDS->AddNode( p.X(), p.Y(), p.Z());
417 C3d->Edge( *parIt, edge, u );
418 meshDS->SetNodeOnEdge( n, edge, u );
419 // cout << "new NODE: par="<<*parIt<<" ePar="<<u<<" e="<<edge.TShape().operator->()
420 // << " " << n << endl;
425 double mPar = ( prevPar + *parIt )/2;
426 if ( _quadraticMesh ) {
427 // create medium node
428 double segLen = GCPnts_AbscissaPoint::Length(*C3d, prevPar, *parIt);
429 GCPnts_AbscissaPoint ruler( *C3d, segLen/2., prevPar );
430 if ( ruler.IsDone() )
431 mPar = ruler.Parameter();
432 gp_Pnt p = C3d->Value( mPar );
433 SMDS_MeshNode* n = meshDS->AddNode( p.X(), p.Y(), p.Z());
434 //cout << "new NODE "<< n << endl;
435 meshDS->SetNodeOnEdge( n, edge, u );
436 SMDS_MeshEdge * seg = meshDS->AddEdge(nodes[ iN-1 ], nodes[ iN ], n);
437 meshDS->SetMeshElementOnShape(seg, edge);
440 C3d->Edge( mPar, edge, u );
441 SMDS_MeshEdge * seg = meshDS->AddEdge(nodes[ iN-1 ], nodes[ iN ]);
442 meshDS->SetMeshElementOnShape(seg, edge);
448 // remove nodes on internal vertices
449 for ( int iE = 1; iE < side->NbEdges(); ++iE )
451 TopoDS_Vertex V = side->FirstVertex( iE );
452 while ( const SMDS_MeshNode * n = SMESH_Algo::VertexNode( V, meshDS ))
453 meshDS->RemoveNode( n );
456 // Update submeshes state for all edges and internal vertices,
457 // make them look computed even if none edge or node is set on them
458 careOfSubMeshes( *side, _EventListener );