Update mesh according to geometry modif. Care of actors of removed objects

src/SMESHGUI/SMESHGUI.cxx

@@ -4984,8 +4984,13 @@ bool SMESHGUI::activateModule( SUIT_Study* study )
   if ( aDesk ) {
     QList<SUIT_ViewWindow*> wndList = aDesk->windows();
     SUIT_ViewWindow* wnd;
-    foreach(wnd, wndList) {
+    foreach(wnd, wndList)
+    {
       connectView(wnd);
+
+      // remove actors whose objects are removed in GetSMESHGen()->UpdateStudy()
+      SMESH::UpdateActorsAfterUpdateStudy(wnd);
+
       wnd->update();
     }
   }

src/SMESHGUI/SMESHGUI_VTKUtils.cxx

@@ -232,6 +232,63 @@ namespace SMESH
     }
   }
 
+  //================================================================================
+  /*!
+   * \brief Remove/update actors while module activation
+   *  \param [in] wnd - window
+   *
+   * At module activation, groups and sub-meshes can be removed on engine side due
+   * to modification of meshed geometry, while their actors can remain.
+   * Here we remove/update SMESH_Actor's of changed objects. State (emptiness) of objects
+   * is defined by their icons in the Object Browser
+   */
+  //================================================================================
+
+  void UpdateActorsAfterUpdateStudy( SUIT_ViewWindow* theWindow )
+  {
+    const char* emptyIcon = "ICON_SMESH_TREE_MESH_WARN";
+    _PTR(Study) aStudy = SMESH::getStudy();
+
+    if ( SVTK_ViewWindow* aViewWindow = GetVtkViewWindow( theWindow ))
+    {
+      vtkRenderer *aRenderer = aViewWindow->getRenderer();
+      VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
+      vtkActorCollection *aCollection = aCopy.GetActors();
+      aCollection->InitTraversal();
+      while ( vtkActor *actor = aCollection->GetNextActor() ) {
+        if ( SMESH_Actor *smeshActor = dynamic_cast<SMESH_Actor*>( actor ))
+        {
+          if ( !smeshActor->hasIO() )
+            continue;
+          Handle(SALOME_InteractiveObject) io = smeshActor->getIO();
+          if ( !io->hasEntry() )
+            continue;
+          _PTR(SObject) so = aStudy->FindObjectID( io->getEntry() );
+          if ( !so )
+            continue; // seems impossible
+
+          CORBA::Object_var obj = SMESH::SObjectToObject( so );
+          if ( CORBA::is_nil( obj )) // removed object
+          {
+            RemoveActor( theWindow, smeshActor );
+            continue;
+          }
+
+          bool toShow = smeshActor->GetVisibility();
+          _PTR(GenericAttribute) attr;
+          if ( toShow && so->FindAttribute( attr, "AttributePixMap" )) // check emptiness
+          {
+            _PTR(AttributePixMap) pixMap = attr;
+            toShow = ( pixMap->GetPixMap() != emptyIcon );
+          }
+          smeshActor->Update();
+          UpdateView( theWindow, toShow ? eDisplay : eErase, io->getEntry() );
+        }
+      }
+    }
+    return;
+  }
+
   //================================================================================
   /*!
    * \brief Notify the user on problems during visualization

src/SMESHGUI/SMESHGUI_VTKUtils.h

@@ -216,6 +216,9 @@ SMESHGUI_EXPORT
                            double& theDist );
  SMESHGUI_EXPORT
    void RemoveVisualObjectWithActors( const char* theEntry, bool fromAllViews = false );
+
+  SMESHGUI_EXPORT
+  void UpdateActorsAfterUpdateStudy( SUIT_ViewWindow* wnd );
 };
 
 #endif // SMESHGUI_VTKUTILS_H

src/SMESH_I/SMESH_Mesh_i.cxx

@@ -72,6 +72,7 @@
 #include <TColStd_MapOfInteger.hxx>
 #include <TopExp.hxx>
 #include <TopExp_Explorer.hxx>
+#include <TopTools_DataMapOfShapeShape.hxx>
 #include <TopTools_MapIteratorOfMapOfShape.hxx>
 #include <TopTools_MapOfShape.hxx>
 #include <TopoDS_Compound.hxx>
@@ -270,7 +271,7 @@ void SMESH_Mesh_i::ReplaceShape(GEOM::GEOM_Object_ptr theNewGeom)
   }
 
   // re-assign global hypotheses to the new shape
-  _mainShapeTick = theNewGeom->GetTick() + 1;
+  _mainShapeTick = -1;
   CheckGeomModif();
 }
 
@@ -2060,8 +2061,7 @@ TopoDS_Shape SMESH_Mesh_i::newGroupShape( TGeomGroupData & groupData)
     // get indices of group items
     set<int> curIndices;
     GEOM::GEOM_Gen_var              geomGen = _gen_i->GetGeomEngine( geomGroup );
-    GEOM::GEOM_IGroupOperations_ptr groupOp =
-      geomGen->GetIGroupOperations();
+    GEOM::GEOM_IGroupOperations_ptr groupOp = geomGen->GetIGroupOperations();
     GEOM::ListOfLong_var                ids = groupOp->GetObjects( geomGroup );
     for ( CORBA::ULong i = 0; i < ids->length(); ++i )
       curIndices.insert( ids[i] );
@@ -2182,6 +2182,8 @@ void SMESH_Mesh_i::CheckGeomModif()
   SMESH::SMESH_Mesh_var me = _this();
   GEOM::GEOM_Object_var mainGO = GetShapeToMesh();
 
+  TPythonDump dumpNothing; // prevent any dump
+
   //bool removedFromClient = false;
 
   if ( mainGO->_is_nil() ) // GEOM_Client cleared or geometry removed? (IPAL52735, PAL23636)
@@ -2243,7 +2245,7 @@ void SMESH_Mesh_i::CheckGeomModif()
     return;
   }
 
-  // Update after shape transformation like Translate
+  // Update after shape modification
 
   GEOM_Client* geomClient = _gen_i->GetShapeReader();
   if ( !geomClient ) return;
@@ -2253,21 +2255,17 @@ void SMESH_Mesh_i::CheckGeomModif()
   CORBA::String_var ior = geomGen->GetStringFromIOR( mainGO );
   geomClient->RemoveShapeFromBuffer( ior.in() );
 
-  // Update data taking into account that
+  // Update data taking into account that if topology doesn't change
   // all sub-shapes change but IDs of sub-shapes remain (except for geom groups)
 
+  if ( _preMeshInfo )
+    _preMeshInfo->ForgetAllData();
+
   _impl->Clear();
   TopoDS_Shape newShape = _gen_i->GeomObjectToShape( mainGO );
   if ( newShape.IsNull() )
     return;
 
-  // for the SHAPER-STUDY: the geometry may be updated, so, add a warning icon
-  if (_mainShapeTick != mainGO->GetTick()) {
-    SALOMEDS::SObject_wrap meshSO = _gen_i->ObjectToSObject( me );
-    if ( !meshSO->_is_nil())
-      _gen_i->SetPixMap(meshSO, "ICON_SMESH_TREE_MESH_WARN");
-  }
-
   _mainShapeTick = mainGO->GetTick();
 
   SMESHDS_Mesh * meshDS = _impl->GetMeshDS();
@@ -2276,6 +2274,7 @@ void SMESH_Mesh_i::CheckGeomModif()
   std::vector< TGroupOnGeomData > groupsData;
   const std::set<SMESHDS_GroupBase*>& groups = meshDS->GetGroups();
   groupsData.reserve( groups.size() );
+  TopTools_DataMapOfShapeShape old2newShapeMap;
   std::set<SMESHDS_GroupBase*>::const_iterator g = groups.begin();
   for ( ; g != groups.end(); ++g )
   {
@@ -2297,6 +2296,11 @@ void SMESH_Mesh_i::CheckGeomModif()
         CORBA::String_var ior = geomGen->GetStringFromIOR( geom );
         geomClient->RemoveShapeFromBuffer( ior.in() );
         groupsData.back()._shape = _gen_i->GeomObjectToShape( geom );
+        old2newShapeMap.Bind( group->GetShape(), groupsData.back()._shape );
+      }
+      else if ( old2newShapeMap.IsBound( group->GetShape() ))
+      {
+        groupsData.back()._shape = old2newShapeMap( group->GetShape() );
       }
     }
   }
@@ -2310,12 +2314,33 @@ void SMESH_Mesh_i::CheckGeomModif()
     ids2Hyps.push_back( make_pair( meshDS->ShapeToIndex( s ), hyps ));
   }
 
-  // change shape to mesh
+  // count shapes excluding compounds corresponding to geom groups
   int oldNbSubShapes = meshDS->MaxShapeIndex();
+  for ( ; oldNbSubShapes > 0; --oldNbSubShapes )
+  {
+    const TopoDS_Shape& s = meshDS->IndexToShape( oldNbSubShapes );
+    if ( s.IsNull() || s.ShapeType() != TopAbs_COMPOUND )
+      break;
+  }
+
+  // check if shape topology changes - save shape type per shape ID
+  std::vector< TopAbs_ShapeEnum > shapeTypes( Max( oldNbSubShapes + 1, 1 ));
+  for ( int shapeID = oldNbSubShapes; shapeID > 0; --shapeID )
+    shapeTypes[ shapeID ] = meshDS->IndexToShape( shapeID ).ShapeType();
+
+  // change shape to mesh
   _impl->ShapeToMesh( TopoDS_Shape() );
   _impl->ShapeToMesh( newShape );
 
-  // re-add shapes of geom groups
+  // check if shape topology changes - check new shape types
+  bool sameTopology = ( oldNbSubShapes == meshDS->MaxShapeIndex() );
+  for ( int shapeID = oldNbSubShapes; shapeID > 0 &&  sameTopology; --shapeID )
+  {
+    const TopoDS_Shape& s = meshDS->IndexToShape( shapeID );
+    sameTopology = ( !s.IsNull() && s.ShapeType() == shapeTypes[ shapeID ]);
+  }
+
+  // re-add shapes (compounds) of geom groups
   std::list<TGeomGroupData>::iterator data = _geomGroupData.begin();
   for ( ; data != _geomGroupData.end(); ++data )
   {
@@ -2332,13 +2357,12 @@ void SMESH_Mesh_i::CheckGeomModif()
       _impl->GetSubMesh( newShape );
     }
   }
-  if ( oldNbSubShapes != meshDS->MaxShapeIndex() )
-    THROW_SALOME_CORBA_EXCEPTION( "SMESH_Mesh_i::CheckGeomModif() bug",
-                                  SALOME::INTERNAL_ERROR );
 
   // re-assign hypotheses
   for ( size_t i = 0; i < ids2Hyps.size(); ++i )
   {
+    if ( !sameTopology && ids2Hyps[i].first != 1 )
+      continue; // assign only global hypos
     const TopoDS_Shape& s = meshDS->IndexToShape( ids2Hyps[i].first );
     const THypList&  hyps = ids2Hyps[i].second;
     THypList::const_iterator h = hyps.begin();
@@ -2346,6 +2370,13 @@ void SMESH_Mesh_i::CheckGeomModif()
       _impl->AddHypothesis( s, (*h)->GetID() );
   }
 
+  if ( !sameTopology )
+  {
+    // remove invalid study sub-objects
+    CheckGeomGroupModif();
+  }
+  else
+  {
     // restore groups on geometry
     for ( size_t i = 0; i < groupsData.size(); ++i )
     {
@@ -2370,7 +2401,9 @@ void SMESH_Mesh_i::CheckGeomModif()
     std::map<int, ::SMESH_subMesh*>::iterator i_sm = _mapSubMesh.begin();
     for ( ; i_sm != _mapSubMesh.end(); ++i_sm )
       i_sm->second = _impl->GetSubMesh( meshDS->IndexToShape( i_sm->first ));
+  }
 
+  _gen_i->UpdateIcons( SMESH::SMESH_Mesh_var( _this() ));
 }
 
 //=============================================================================