1 // Copyright (C) 2007-2011 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 if ( data && eventType == SMESH_subMesh::ALGO_EVENT )
172 if ( subMesh->GetAlgoState() != SMESH_subMesh::HYP_OK )
175 SMESH_Algo* algo = subMesh->GetAlgo();
176 hypRemoved = ( string( algo->GetName() ) != StdMeshers_CompositeSegment_1D::AlgoName());
180 list<SMESH_subMesh*>::iterator smIt = data->mySubMeshes.begin();
181 for ( ; smIt != data->mySubMeshes.end(); ++smIt )
182 if ( SMESH_subMesh* sm = *smIt ) {
183 sm->SetIsAlwaysComputed( false );
184 sm->ComputeStateEngine( SMESH_subMesh::CHECK_COMPUTE_STATE );
188 // at study restoration:
189 // check if edge submesh must have _alwaysComputed flag
190 else if ( event == SMESH_subMesh::SUBMESH_RESTORED &&
191 eventType == SMESH_subMesh::COMPUTE_EVENT )
193 if ( !subMesh->GetEventListenerData( this )) { // not yet checked
194 SMESHDS_Mesh * meshDS = subMesh->GetFather()->GetMeshDS();
195 if ( meshDS->NbNodes() > 0 ) {
196 // check if there are nodes on all vertices
197 bool hasNodesOnVerext = true;
198 SMESH_subMeshIteratorPtr smIt = subMesh->getDependsOnIterator(false,false);
199 while ( hasNodesOnVerext && smIt->more() ) {
200 SMESH_subMesh* sm = smIt->next();
201 hasNodesOnVerext = ( sm->GetSubMeshDS() && sm->GetSubMeshDS()->NbNodes() );
203 if ( !hasNodesOnVerext ) {
204 // check if an edge is a part of a complex side
206 TopoDS_Edge edge = TopoDS::Edge( subMesh->GetSubShape() );
207 auto_ptr< StdMeshers_FaceSide > side
208 ( StdMeshers_CompositeSegment_1D::GetFaceSide(*subMesh->GetFather(),
209 edge, face, false ));
210 if ( side->NbEdges() > 1 && side->NbSegments() )
211 careOfSubMeshes( *side, this );
217 }; // struct VertexNodesRestoringListener
220 //=============================================================================
224 //=============================================================================
226 StdMeshers_CompositeSegment_1D::StdMeshers_CompositeSegment_1D(int hypId,
229 :StdMeshers_Regular_1D(hypId, studyId, gen)
231 MESSAGE("StdMeshers_CompositeSegment_1D::StdMeshers_CompositeSegment_1D");
233 _EventListener = new VertexNodesRestoringListener();
236 //=======================================================================
237 //function : AlgoName
238 //purpose : Returns algo type name
239 //=======================================================================
241 std::string StdMeshers_CompositeSegment_1D::AlgoName()
243 return "CompositeSegment_1D";
245 //=============================================================================
249 //=============================================================================
251 StdMeshers_CompositeSegment_1D::~StdMeshers_CompositeSegment_1D()
253 delete _EventListener;
256 //=============================================================================
258 * \brief Sets event listener to submeshes if necessary
259 * \param subMesh - submesh where algo is set
261 * This method is called when a submesh gets HYP_OK algo_state.
262 * After being set, event listener is notified on each event of a submesh.
264 //=============================================================================
266 void StdMeshers_CompositeSegment_1D::SetEventListener(SMESH_subMesh* subMesh)
268 // issue 0020279. Set "_alwaysComputed" flag to the submeshes of internal
269 // vertices of composite edge in order to avoid creation of vertices on
270 // them for the sake of stability.
272 // check if "_alwaysComputed" is not yet set
273 bool isAlwaysComputed = false;
274 SMESH_subMeshIteratorPtr smIt = subMesh->getDependsOnIterator(false,false);
275 while ( !isAlwaysComputed && smIt->more() )
276 isAlwaysComputed = smIt->next()->IsAlwaysComputed();
278 if ( !isAlwaysComputed )
280 // check if an edge is a part of a complex side
282 TopoDS_Edge edge = TopoDS::Edge( subMesh->GetSubShape() );
283 auto_ptr< StdMeshers_FaceSide > side
284 ( StdMeshers_CompositeSegment_1D::GetFaceSide(*subMesh->GetFather(),edge, face, false ));
285 if ( side->NbEdges() > 1 ) { // complex
287 // set _alwaysComputed to vertices
288 for ( int iE = 1; iE < side->NbEdges(); ++iE )
290 TopoDS_Vertex V = side->FirstVertex( iE );
291 SMESH_subMesh* sm = side->GetMesh()->GetSubMesh( V );
292 sm->SetIsAlwaysComputed( true );
296 // set listener that will remove _alwaysComputed from submeshes at algorithm change
297 subMesh->SetEventListener( _EventListener, 0, subMesh);
298 StdMeshers_Regular_1D::SetEventListener( subMesh );
301 //=============================================================================
303 * \brief Return a face side the edge belongs to
305 //=============================================================================
307 StdMeshers_FaceSide *
308 StdMeshers_CompositeSegment_1D::GetFaceSide(SMESH_Mesh& aMesh,
309 const TopoDS_Edge& anEdge,
310 const TopoDS_Face& aFace,
311 const bool ignoreMeshed)
313 list< TopoDS_Edge > edges;
314 if ( anEdge.Orientation() <= TopAbs_REVERSED )
315 edges.push_back( anEdge );
317 edges.push_back( TopoDS::Edge( anEdge.Oriented( TopAbs_FORWARD ))); // PAL21718
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( edges.back(), 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))
338 if ( std::find( edges.begin(), edges.end(), eNext ) != edges.end() )
341 edges.push_back( eNext );
343 edges.push_front( eNext );
344 eNext = nextC1Edge( eNext, aMesh, forward );
347 return new StdMeshers_FaceSide( aFace, edges, &aMesh, true, false );
350 //=============================================================================
354 //=============================================================================
356 bool StdMeshers_CompositeSegment_1D::Compute(SMESH_Mesh & aMesh,
357 const TopoDS_Shape & aShape)
359 TopoDS_Edge edge = TopoDS::Edge( aShape );
360 SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
362 // Get edges to be discretized as a whole
363 TopoDS_Face nullFace;
364 auto_ptr< StdMeshers_FaceSide > side( GetFaceSide(aMesh, edge, nullFace, true ));
365 //side->dump("IN COMPOSITE SEG");
367 if ( side->NbEdges() < 2 )
368 return StdMeshers_Regular_1D::Compute( aMesh, aShape );
370 // update segment lenght computed by StdMeshers_AutomaticLength
371 const list <const SMESHDS_Hypothesis * > & hyps = GetUsedHypothesis(aMesh, aShape);
372 if ( !hyps.empty() ) {
373 StdMeshers_AutomaticLength * autoLenHyp = const_cast<StdMeshers_AutomaticLength *>
374 (dynamic_cast <const StdMeshers_AutomaticLength * >(hyps.front()));
376 _value[ BEG_LENGTH_IND ]= autoLenHyp->GetLength( &aMesh, side->Length() );
379 // Compute node parameters
380 auto_ptr< BRepAdaptor_CompCurve > C3d ( side->GetCurve3d() );
381 double f = C3d->FirstParameter(), l = C3d->LastParameter();
382 list< double > params;
383 if ( !computeInternalParameters ( aMesh, *C3d, side->Length(), f, l, params, false ))
386 // Redistribute parameters near ends
387 TopoDS_Vertex VFirst = side->FirstVertex();
388 TopoDS_Vertex VLast = side->LastVertex();
389 redistributeNearVertices( aMesh, *C3d, side->Length(), params, VFirst, VLast );
391 params.push_front(f);
393 int nbNodes = params.size();
397 const SMDS_MeshNode * nFirst = SMESH_Algo::VertexNode( VFirst, meshDS );
398 const SMDS_MeshNode * nLast = SMESH_Algo::VertexNode( VLast, meshDS );
400 return error(COMPERR_BAD_INPUT_MESH, TComm("No node on vertex ")
401 <<meshDS->ShapeToIndex(VFirst));
403 return error(COMPERR_BAD_INPUT_MESH, TComm("No node on vertex ")
404 <<meshDS->ShapeToIndex(VLast));
406 vector<const SMDS_MeshNode*> nodes( nbNodes, (const SMDS_MeshNode*)0 );
407 nodes.front() = nFirst;
408 nodes.back() = nLast;
410 // create internal nodes
411 list< double >::iterator parIt = params.begin();
412 double prevPar = *parIt;
414 for ( int iN = 0; parIt != params.end(); ++iN, ++parIt)
416 if ( !nodes[ iN ] ) {
417 gp_Pnt p = C3d->Value( *parIt );
418 SMDS_MeshNode* n = meshDS->AddNode( p.X(), p.Y(), p.Z());
419 C3d->Edge( *parIt, edge, u );
420 meshDS->SetNodeOnEdge( n, edge, u );
421 // cout << "new NODE: par="<<*parIt<<" ePar="<<u<<" e="<<edge.TShape().operator->()
422 // << " " << n << endl;
427 double mPar = ( prevPar + *parIt )/2;
428 if ( _quadraticMesh ) {
429 // create medium node
430 double segLen = GCPnts_AbscissaPoint::Length(*C3d, prevPar, *parIt);
431 GCPnts_AbscissaPoint ruler( *C3d, segLen/2., prevPar );
432 if ( ruler.IsDone() )
433 mPar = ruler.Parameter();
434 gp_Pnt p = C3d->Value( mPar );
435 SMDS_MeshNode* n = meshDS->AddNode( p.X(), p.Y(), p.Z());
436 //cout << "new NODE "<< n << endl;
437 meshDS->SetNodeOnEdge( n, edge, u );
438 SMDS_MeshEdge * seg = meshDS->AddEdge(nodes[ iN-1 ], nodes[ iN ], n);
439 meshDS->SetMeshElementOnShape(seg, edge);
442 C3d->Edge( mPar, edge, u );
443 SMDS_MeshEdge * seg = meshDS->AddEdge(nodes[ iN-1 ], nodes[ iN ]);
444 meshDS->SetMeshElementOnShape(seg, edge);
450 // remove nodes on internal vertices
451 for ( int iE = 1; iE < side->NbEdges(); ++iE )
453 TopoDS_Vertex V = side->FirstVertex( iE );
454 while ( const SMDS_MeshNode * n = SMESH_Algo::VertexNode( V, meshDS ))
455 meshDS->RemoveNode( n );
458 // Update submeshes state for all edges and internal vertices,
459 // make them look computed even if none edge or node is set on them
460 careOfSubMeshes( *side, _EventListener );