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_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():SMESH_subMeshEventListener(0) // won't be deleted by submesh
156 * \brief Restore nodes on internal vertices of a complex side
157 * \param event - algo_event or compute_event itself (of SMESH_subMesh)
158 * \param eventType - ALGO_EVENT or COMPUTE_EVENT (of SMESH_subMesh)
159 * \param subMesh - the submesh where the event occures
160 * \param data - listener data stored in the subMesh
161 * \param hyp - hypothesis, if eventType is algo_event
163 void ProcessEvent(const int event,
165 SMESH_subMesh* subMesh,
166 EventListenerData* data,
167 const SMESH_Hypothesis* /*hyp*/)
169 bool hypRemoved = ( eventType == SMESH_subMesh::ALGO_EVENT &&
170 subMesh->GetAlgoState() != SMESH_subMesh::HYP_OK );
171 if ( hypRemoved && data )
173 list<SMESH_subMesh*>::iterator smIt = data->mySubMeshes.begin();
174 for ( ; smIt != data->mySubMeshes.end(); ++smIt )
176 if ( SMESH_subMesh* sm = *smIt ) {
177 sm->SetIsAlwaysComputed( false );
178 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
182 // at study restoration:
183 // check if edge submesh must have _alwaysComputed flag
184 else if ( event == SMESH_subMesh::SUBMESH_RESTORED &&
185 eventType == SMESH_subMesh::COMPUTE_EVENT )
187 if ( !subMesh->GetEventListenerData( this )) { // not yet checked
188 SMESHDS_Mesh * meshDS = subMesh->GetFather()->GetMeshDS();
189 if ( meshDS->NbNodes() > 0 ) {
190 // check if there are nodes on all vertices
191 bool hasNodesOnVerext = true;
192 SMESH_subMeshIteratorPtr smIt = subMesh->getDependsOnIterator(false,false);
193 while ( hasNodesOnVerext && smIt->more() ) {
194 SMESH_subMesh* sm = smIt->next();
195 hasNodesOnVerext = ( sm->GetSubMeshDS() && sm->GetSubMeshDS()->NbNodes() );
197 if ( !hasNodesOnVerext ) {
198 // check if an edge is a part of a complex side
200 TopoDS_Edge edge = TopoDS::Edge( subMesh->GetSubShape() );
201 auto_ptr< StdMeshers_FaceSide > side
202 ( StdMeshers_CompositeSegment_1D::GetFaceSide(*subMesh->GetFather(),
203 edge, face, false ));
204 if ( side->NbEdges() > 1 && side->NbSegments() )
205 careOfSubMeshes( *side, this );
211 }; // struct VertexNodesRestoringListener
214 //=============================================================================
218 //=============================================================================
220 StdMeshers_CompositeSegment_1D::StdMeshers_CompositeSegment_1D(int hypId,
223 :StdMeshers_Regular_1D(hypId, studyId, gen)
225 MESSAGE("StdMeshers_CompositeSegment_1D::StdMeshers_CompositeSegment_1D");
226 _name = "CompositeSegment_1D";
227 _EventListener = new VertexNodesRestoringListener();
230 //=============================================================================
234 //=============================================================================
236 StdMeshers_CompositeSegment_1D::~StdMeshers_CompositeSegment_1D()
238 delete _EventListener;
241 //=============================================================================
243 * \brief Sets event listener to submeshes if necessary
244 * \param subMesh - submesh where algo is set
246 * This method is called when a submesh gets HYP_OK algo_state.
247 * After being set, event listener is notified on each event of a submesh.
249 //=============================================================================
251 void StdMeshers_CompositeSegment_1D::SetEventListener(SMESH_subMesh* subMesh)
253 // issue 0020279. Set "_alwaysComputed" flag to the submeshes of internal
254 // vertices of composite edge in order to avoid creation of vertices on
255 // them for the sake of stability.
257 // check if "_alwaysComputed" is not yet set
258 bool isAlwaysComputed = false;
259 SMESH_subMeshIteratorPtr smIt = subMesh->getDependsOnIterator(false,false);
260 while ( !isAlwaysComputed && smIt->more() )
261 isAlwaysComputed = smIt->next()->IsAlwaysComputed();
263 if ( !isAlwaysComputed )
265 // check if an edge is a part of a complex side
267 TopoDS_Edge edge = TopoDS::Edge( subMesh->GetSubShape() );
268 auto_ptr< StdMeshers_FaceSide > side
269 ( StdMeshers_CompositeSegment_1D::GetFaceSide(*subMesh->GetFather(),edge, face, false ));
270 if ( side->NbEdges() > 1 ) { // complex
272 // set _alwaysComputed to vertices
273 for ( int iE = 1; iE < side->NbEdges(); ++iE )
275 TopoDS_Vertex V = side->FirstVertex( iE );
276 SMESH_subMesh* sm = side->GetMesh()->GetSubMesh( V );
277 sm->SetIsAlwaysComputed( true );
281 // set listener that will remove _alwaysComputed from submeshes at algorithm change
282 subMesh->SetEventListener( _EventListener, 0, subMesh);
283 StdMeshers_Regular_1D::SetEventListener( subMesh );
286 //=============================================================================
288 * \brief Return a face side the edge belongs to
290 //=============================================================================
292 StdMeshers_FaceSide *
293 StdMeshers_CompositeSegment_1D::GetFaceSide(SMESH_Mesh& aMesh,
294 const TopoDS_Edge& anEdge,
295 const TopoDS_Face& aFace,
296 const bool ignoreMeshed)
298 list< TopoDS_Edge > edges;
299 if ( anEdge.Orientation() <= TopAbs_REVERSED )
300 edges.push_back( anEdge );
302 edges.push_back( TopoDS::Edge( anEdge.Oriented( TopAbs_FORWARD ))); // PAL21718
304 list <const SMESHDS_Hypothesis *> hypList;
305 SMESH_Algo* theAlgo = aMesh.GetGen()->GetAlgo( aMesh, anEdge );
306 if ( theAlgo ) hypList = theAlgo->GetUsedHypothesis(aMesh, anEdge, false);
307 for ( int forward = 0; forward < 2; ++forward )
309 TopoDS_Edge eNext = nextC1Edge( edges.back(), aMesh, forward );
310 while ( !eNext.IsNull() ) {
311 if ( ignoreMeshed ) {
312 // eNext must not have computed mesh
313 if ( SMESHDS_SubMesh* sm = aMesh.GetMeshDS()->MeshElements(eNext) )
314 if ( sm->NbNodes() || sm->NbElements() )
317 // eNext must have same hypotheses
318 SMESH_Algo* algo = aMesh.GetGen()->GetAlgo( aMesh, eNext );
320 string(theAlgo->GetName()) != algo->GetName() ||
321 hypList != algo->GetUsedHypothesis(aMesh, eNext, false))
323 if ( std::find( edges.begin(), edges.end(), eNext ) != edges.end() )
326 edges.push_back( eNext );
328 edges.push_front( eNext );
329 eNext = nextC1Edge( eNext, aMesh, forward );
332 return new StdMeshers_FaceSide( aFace, edges, &aMesh, true, false );
335 //=============================================================================
339 //=============================================================================
341 bool StdMeshers_CompositeSegment_1D::Compute(SMESH_Mesh & aMesh,
342 const TopoDS_Shape & aShape)
344 TopoDS_Edge edge = TopoDS::Edge( aShape );
345 SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
347 // Get edges to be discretized as a whole
348 TopoDS_Face nullFace;
349 auto_ptr< StdMeshers_FaceSide > side( GetFaceSide(aMesh, edge, nullFace, true ));
350 //side->dump("IN COMPOSITE SEG");
352 if ( side->NbEdges() < 2 )
353 return StdMeshers_Regular_1D::Compute( aMesh, aShape );
355 // update segment lenght computed by StdMeshers_AutomaticLength
356 const list <const SMESHDS_Hypothesis * > & hyps = GetUsedHypothesis(aMesh, aShape);
357 if ( !hyps.empty() ) {
358 StdMeshers_AutomaticLength * autoLenHyp = const_cast<StdMeshers_AutomaticLength *>
359 (dynamic_cast <const StdMeshers_AutomaticLength * >(hyps.front()));
361 _value[ BEG_LENGTH_IND ]= autoLenHyp->GetLength( &aMesh, side->Length() );
364 // Compute node parameters
365 auto_ptr< BRepAdaptor_CompCurve > C3d ( side->GetCurve3d() );
366 double f = C3d->FirstParameter(), l = C3d->LastParameter();
367 list< double > params;
368 if ( !computeInternalParameters ( aMesh, *C3d, side->Length(), f, l, params, false ))
371 // Redistribute parameters near ends
372 TopoDS_Vertex VFirst = side->FirstVertex();
373 TopoDS_Vertex VLast = side->LastVertex();
374 redistributeNearVertices( aMesh, *C3d, side->Length(), params, VFirst, VLast );
376 params.push_front(f);
378 int nbNodes = params.size();
382 const SMDS_MeshNode * nFirst = SMESH_Algo::VertexNode( VFirst, meshDS );
383 const SMDS_MeshNode * nLast = SMESH_Algo::VertexNode( VLast, meshDS );
385 return error(COMPERR_BAD_INPUT_MESH, TComm("No node on vertex ")
386 <<meshDS->ShapeToIndex(VFirst));
388 return error(COMPERR_BAD_INPUT_MESH, TComm("No node on vertex ")
389 <<meshDS->ShapeToIndex(VLast));
391 vector<const SMDS_MeshNode*> nodes( nbNodes, (const SMDS_MeshNode*)0 );
392 nodes.front() = nFirst;
393 nodes.back() = nLast;
395 // create internal nodes
396 list< double >::iterator parIt = params.begin();
397 double prevPar = *parIt;
399 for ( int iN = 0; parIt != params.end(); ++iN, ++parIt)
401 if ( !nodes[ iN ] ) {
402 gp_Pnt p = C3d->Value( *parIt );
403 SMDS_MeshNode* n = meshDS->AddNode( p.X(), p.Y(), p.Z());
404 C3d->Edge( *parIt, edge, u );
405 meshDS->SetNodeOnEdge( n, edge, u );
406 // cout << "new NODE: par="<<*parIt<<" ePar="<<u<<" e="<<edge.TShape().operator->()
407 // << " " << n << endl;
412 double mPar = ( prevPar + *parIt )/2;
413 if ( _quadraticMesh ) {
414 // create medium node
415 double segLen = GCPnts_AbscissaPoint::Length(*C3d, prevPar, *parIt);
416 GCPnts_AbscissaPoint ruler( *C3d, segLen/2., prevPar );
417 if ( ruler.IsDone() )
418 mPar = ruler.Parameter();
419 gp_Pnt p = C3d->Value( mPar );
420 SMDS_MeshNode* n = meshDS->AddNode( p.X(), p.Y(), p.Z());
421 //cout << "new NODE "<< n << endl;
422 meshDS->SetNodeOnEdge( n, edge, u );
423 SMDS_MeshEdge * seg = meshDS->AddEdge(nodes[ iN-1 ], nodes[ iN ], n);
424 meshDS->SetMeshElementOnShape(seg, edge);
427 C3d->Edge( mPar, edge, u );
428 SMDS_MeshEdge * seg = meshDS->AddEdge(nodes[ iN-1 ], nodes[ iN ]);
429 meshDS->SetMeshElementOnShape(seg, edge);
435 // remove nodes on internal vertices
436 for ( int iE = 1; iE < side->NbEdges(); ++iE )
438 TopoDS_Vertex V = side->FirstVertex( iE );
439 while ( const SMDS_MeshNode * n = SMESH_Algo::VertexNode( V, meshDS ))
440 meshDS->RemoveNode( n );
443 // Update submeshes state for all edges and internal vertices,
444 // make them look computed even if none edge or node is set on them
445 careOfSubMeshes( *side, _EventListener );