Optimize performance of mesh deletion upon hyp modification

resources/StdMeshers.xml.in

@@ -46,7 +46,7 @@
              different dimensions. Compatible algos have equal geometries in "input" and "output".
      need-hyp - (optional) Boolean. Does the algo require a hypothesis or not. Default is "false".
      need-geom - (optional) [true, fasle, never]. Can the algo work w/o geometry or not.
-             Default is "true" "never" means that the algo can't work with geometry.
+             Default is "true". "never" means that the algo can't work with geometry.
      support-submeshes - (optional) Boolean. Does an multi-dimensional algo support sub-meshes.
                          Default is "false".
      

src/SMDS/SMDS_Mesh.cxx

@@ -130,7 +130,6 @@ SMDS_Mesh::SMDS_Mesh():
   myNodeIDFactory(new SMDS_MeshNodeIDFactory()),
   myElementIDFactory(new SMDS_MeshElementIDFactory()),
   myModified(false), myModifTime(0), myCompactTime(0),
-  myNodeMin(0), myNodeMax(0),
   myHasConstructionEdges(false), myHasConstructionFaces(false),
   myHasInverseElements(true),
   xmin(0), xmax(0), ymin(0), ymax(0), zmin(0), zmax(0)
@@ -3424,7 +3423,7 @@ void SMDS_Mesh::RemoveFreeElement(const SMDS_MeshElement * elem)
  */
 bool SMDS_Mesh::Contains (const SMDS_MeshElement* elem) const
 {
-  // we should not imply on validity of *elem, so iterate on containers
+  // we should not rely on validity of *elem, so iterate on containers
   // of all types in the hope of finding <elem> somewhere there
   SMDS_NodeIteratorPtr itn = nodesIterator();
   while (itn->more())
@@ -3444,7 +3443,7 @@ bool SMDS_Mesh::Contains (const SMDS_MeshElement* elem) const
 
 int SMDS_Mesh::MaxNodeID() const
 {
-  return myNodeMax;
+  return myNodeIDFactory->GetMaxID();
 }
 
 //=======================================================================
@@ -3454,7 +3453,7 @@ int SMDS_Mesh::MaxNodeID() const
 
 int SMDS_Mesh::MinNodeID() const
 {
-  return myNodeMin;
+  return myNodeIDFactory->GetMinID();
 }
 
 //=======================================================================
@@ -4632,44 +4631,6 @@ SMDS_MeshVolume* SMDS_Mesh::AddVolumeWithID(const SMDS_MeshNode * n1,
   return volvtk;
 }
 
-
-void SMDS_Mesh::updateNodeMinMax()
-{
-  myNodeMin = 0;
-  if (myNodes.size() == 0)
-  {
-    myNodeMax=0;
-    return;
-  }
-  while ( !myNodes[myNodeMin] && myNodeMin < (int)myNodes.size() )
-    myNodeMin++;
-  myNodeMax=myNodes.size()-1;
-  while (!myNodes[myNodeMax] && (myNodeMin>=0))
-    myNodeMin--;
-}
-
-void SMDS_Mesh::incrementNodesCapacity(int nbNodes)
-{
-//  int val = myCellIdSmdsToVtk.size();
-//  MESSAGE(" ------------------- resize myCellIdSmdsToVtk " << val << " --> " << val + nbNodes);
-//  myCellIdSmdsToVtk.resize(val + nbNodes, -1); // fill new elements with -1
-  int val = myNodes.size();
-  myNodes.resize(val +nbNodes, 0);
-}
-
-void SMDS_Mesh::incrementCellsCapacity(int nbCells)
-{
-  int val = myCellIdVtkToSmds.size();
-  myCellIdVtkToSmds.resize(val + nbCells, -1); // fill new elements with -1
-  val = myCells.size();
-  myNodes.resize(val +nbCells, 0);
-}
-
-void SMDS_Mesh::adjustStructure()
-{
-  myGrid->GetPoints()->GetData()->SetNumberOfTuples(myNodeIDFactory->GetMaxID());
-}
-
 void SMDS_Mesh::dumpGrid(string ficdump)
 {
   //  vtkUnstructuredGridWriter* aWriter = vtkUnstructuredGridWriter::New();
@@ -4730,28 +4691,28 @@ int SMDS_Mesh::fromVtkToSmds(int vtkid)
   throw SALOME_Exception(LOCALIZED ("vtk id out of bounds"));
 }
 
-void SMDS_Mesh::updateBoundingBox()
-{
-  xmin = 0; xmax = 0;
-  ymin = 0; ymax = 0;
-  zmin = 0; zmax = 0;
-  vtkPoints *points = myGrid->GetPoints();
-  int myNodesSize = this->myNodes.size();
-  for (int i = 0; i < myNodesSize; i++)
-    {
-      if (SMDS_MeshNode *n = myNodes[i])
-        {
-          double coords[3];
-          points->GetPoint(n->myVtkID, coords);
-          if (coords[0] < xmin) xmin = coords[0];
-          else if (coords[0] > xmax) xmax = coords[0];
-          if (coords[1] < ymin) ymin = coords[1];
-          else if (coords[1] > ymax) ymax = coords[1];
-          if (coords[2] < zmin) zmin = coords[2];
-          else if (coords[2] > zmax) zmax = coords[2];
-        }
-    }
-}
+// void SMDS_Mesh::updateBoundingBox()
+// {
+//   xmin = 0; xmax = 0;
+//   ymin = 0; ymax = 0;
+//   zmin = 0; zmax = 0;
+//   vtkPoints *points = myGrid->GetPoints();
+//   int myNodesSize = this->myNodes.size();
+//   for (int i = 0; i < myNodesSize; i++)
+//     {
+//       if (SMDS_MeshNode *n = myNodes[i])
+//         {
+//           double coords[3];
+//           points->GetPoint(n->myVtkID, coords);
+//           if (coords[0] < xmin) xmin = coords[0];
+//           else if (coords[0] > xmax) xmax = coords[0];
+//           if (coords[1] < ymin) ymin = coords[1];
+//           else if (coords[1] > ymax) ymax = coords[1];
+//           if (coords[2] < zmin) zmin = coords[2];
+//           else if (coords[2] > zmax) zmax = coords[2];
+//         }
+//     }
+// }
 
 double SMDS_Mesh::getMaxDim()
 {

src/SMDS/SMDS_Mesh.hxx

@@ -739,14 +739,10 @@ public:
   typedef std::vector<SMDS_MeshNode *> SetOfNodes;
   typedef std::vector<SMDS_MeshCell *> SetOfCells;
 
-  void updateNodeMinMax();
-  void updateBoundingBox();
+  //void updateBoundingBox();
   double getMaxDim();
   int fromVtkToSmds(int vtkid);
 
-  void incrementNodesCapacity(int nbNodes);
-  void incrementCellsCapacity(int nbCells);
-  void adjustStructure();
   void dumpGrid(std::string ficdump="dumpGrid");
   static int chunkSize;
 
@@ -820,10 +816,8 @@ protected:
   ObjectPool<SMDS_VtkEdge>*     myEdgePool;
   ObjectPool<SMDS_BallElement>* myBallPool;
 
-  //! SMDS_MeshNodes refer to vtk nodes (vtk id = index in myNodes),store reference to this mesh, and sub-shape
+  //! SMDS_MeshNodes refer to vtk nodes (vtk id != index in myNodes),store reference to this mesh, and sub-shape
   SetOfNodes                    myNodes;
-
-  //! SMDS_MeshCells refer to vtk cells (vtk id != index in myCells),store reference to this mesh, and sub-shape
   SetOfCells                    myCells;
 
   //! a buffer to speed up elements addition by excluding some memory allocation
@@ -843,9 +837,6 @@ protected:
   //! use a counter to keep track of modifications
   unsigned long myModifTime, myCompactTime;
 
-  int myNodeMin;
-  int myNodeMax;
-
   bool myHasConstructionEdges;
   bool myHasConstructionFaces;
   bool myHasInverseElements;

src/SMDS/SMDS_MeshElementIDFactory.hxx

@@ -51,13 +51,12 @@ public:
   virtual void Clear();
 
 protected:
-  void updateMinMax() const;
+  virtual void updateMinMax() const;
   void updateMinMax(int id) const
   {
     if (id > myMax) myMax = id;
     if (id < myMin) myMin = id;
   }
-
 };
 
 #endif

src/SMDS/SMDS_MeshIDFactory.cxx

@@ -50,8 +50,8 @@ int SMDS_MeshIDFactory::GetFreeID()
   else
   {
     set<int>::iterator i = myPoolOfID.begin();
-    newid = *i;//myPoolOfID.top();
-    myPoolOfID.erase( i );//myPoolOfID.pop();
+    newid = *i;
+    myPoolOfID.erase( i );
   }
   return newid;
 }
@@ -77,11 +77,13 @@ void SMDS_MeshIDFactory::ReleaseID(int ID, int vtkId)
         while ( i != myPoolOfID.begin() && myMaxID == *i ) {
           --myMaxID; --i;
         }
-        if ( myMaxID == *i )
+        if ( myMaxID == *i ) {
           --myMaxID; // begin of myPoolOfID reached
-        else
-          ++i;
-        myPoolOfID.erase( i, myPoolOfID.end() );
+          myPoolOfID.clear();
+        }
+        else if ( myMaxID < ID-1 ) {
+          myPoolOfID.erase( ++i, myPoolOfID.end() );
+        }
       }
     }
   }

src/SMDS/SMDS_MeshNode.cxx

@@ -82,13 +82,10 @@ SMDS_MeshNode::~SMDS_MeshNode()
 //purpose  :
 //=======================================================================
 
-void SMDS_MeshNode::RemoveInverseElement(const SMDS_MeshElement * parent)
+void SMDS_MeshNode::RemoveInverseElement(const SMDS_MeshElement * elem)
 {
-  //MESSAGE("RemoveInverseElement " << myID << " " << parent->GetID());
-  const SMDS_MeshCell* cell = dynamic_cast<const SMDS_MeshCell*>(parent);
-  MYASSERT(cell);
   if ( SMDS_Mesh::_meshList[myMeshId]->getGrid()->HasLinks() )
-    SMDS_Mesh::_meshList[myMeshId]->getGrid()->RemoveReferenceToCell(myVtkID, cell->getVtkId());
+    SMDS_Mesh::_meshList[myMeshId]->getGrid()->RemoveReferenceToCell(myVtkID, elem->getVtkId());
 }
 
 //=======================================================================
@@ -313,12 +310,10 @@ vtkIdType SMDS_MeshNode::GetVtkType() const
 //=======================================================================
 void SMDS_MeshNode::AddInverseElement(const SMDS_MeshElement* ME)
 {
-  const SMDS_MeshCell *cell = dynamic_cast<const SMDS_MeshCell*> (ME);
-  assert(cell);
   SMDS_UnstructuredGrid* grid = SMDS_Mesh::_meshList[myMeshId]->getGrid();
   vtkCellLinks *Links = grid->GetLinks();
   Links->ResizeCellList(myVtkID, 1);
-  Links->AddCellReference(cell->getVtkId(), myVtkID);
+  Links->AddCellReference(ME->getVtkId(), myVtkID);
 }
 
 //=======================================================================

src/SMDS/SMDS_MeshNodeIDFactory.cxx

@@ -126,9 +126,21 @@ int SMDS_MeshNodeIDFactory::GetMinID() const
 
 void SMDS_MeshNodeIDFactory::updateMinMax() const
 {
-  myMesh->updateNodeMinMax();
-  myMin = myMesh->MinNodeID();
-  myMax = myMesh->MaxNodeID();
+  myMin = INT_MAX;
+  myMax = 0;
+  for (size_t i = 0; i < myMesh->myNodes.size(); i++)
+  {
+    if (myMesh->myNodes[i])
+    {
+      int id = myMesh->myNodes[i]->GetID();
+      if (id > myMax)
+        myMax = id;
+      if (id < myMin)
+        myMin = id;
+    }
+  }
+  if (myMin == INT_MAX)
+    myMin = 0;
 }
 
 SMDS_ElemIteratorPtr SMDS_MeshNodeIDFactory::elementsIterator() const

src/SMDS/SMDS_MeshNodeIDFactory.hxx

@@ -49,7 +49,7 @@ public:
   virtual void emptyPool(int maxId);
 
 protected:
-  void updateMinMax() const;
+  virtual void updateMinMax() const;
   void updateMinMax(int id) const
   {
     if (id > myMax)

src/SMDS/SMDS_UnstructuredGrid.cxx

@@ -139,8 +139,10 @@ vtkPoints* SMDS_UnstructuredGrid::GetPoints()
 
 int SMDS_UnstructuredGrid::InsertNextLinkedCell(int type, int npts, vtkIdType *pts)
 {
-  if ( !this->Links )
-    BuildLinks();
+  if ( !this->Links ) // don't create Links until they are needed
+  {
+    return this->InsertNextCell(type, npts, pts);
+  }
 
   if ( type != VTK_POLYHEDRON )
     return vtkUnstructuredGrid::InsertNextLinkedCell(type, npts, pts);

src/SMESH/SMESH_Mesh.cxx

@@ -1208,26 +1208,25 @@ void SMESH_Mesh::NotifySubMeshesHypothesisModification(const SMESH_Hypothesis* h
   SMESH_Algo *algo;
   const SMESH_HypoFilter* compatibleHypoKind;
   list <const SMESHDS_Hypothesis * > usedHyps;
-
-  // keep sub-meshes not to miss ones whose state can change due to notifying others
   vector< SMESH_subMesh* > smToNotify;
+  bool allMeshedEdgesNotified = true;
 
   SMESH_subMeshIteratorPtr smIt( _subMeshHolder->GetIterator() );
   while ( smIt->more() )
   {
     SMESH_subMesh* aSubMesh = smIt->next();
+    bool toNotify = false;
 
     // if aSubMesh meshing depends on hyp,
     // we call aSubMesh->AlgoStateEngine( MODIF_HYP, hyp ) that causes either
     // 1) clearing already computed aSubMesh or
     // 2) changing algo_state from MISSING_HYP to HYP_OK when parameters of hyp becomes valid,
     // other possible changes are not interesting. (IPAL0052457 - assigning hyp performance pb)
-    if ( aSubMesh->GetComputeState() != SMESH_subMesh::COMPUTE_OK &&
-         aSubMesh->GetComputeState() != SMESH_subMesh::FAILED_TO_COMPUTE &&
-         aSubMesh->GetAlgoState()    != SMESH_subMesh::MISSING_HYP &&
-         !hyp->DataDependOnParams() )
-      continue;
-
+    if ( aSubMesh->GetComputeState() == SMESH_subMesh::COMPUTE_OK ||
+         aSubMesh->GetComputeState() == SMESH_subMesh::FAILED_TO_COMPUTE ||
+         aSubMesh->GetAlgoState()    == SMESH_subMesh::MISSING_HYP ||
+         hyp->DataDependOnParams() )
+    {
       const TopoDS_Shape & aSubShape = aSubMesh->GetSubShape();
 
       if (( aSubMesh->IsApplicableHypotesis( hyp )) &&
@@ -1237,19 +1236,28 @@ void SMESH_Mesh::NotifySubMeshesHypothesisModification(const SMESH_Hypothesis* h
       {
         // check if hyp is used by algo
         usedHyps.clear();
-      if ( GetHypotheses( aSubMesh, *compatibleHypoKind, usedHyps, true ) &&
-           find( usedHyps.begin(), usedHyps.end(), hyp ) != usedHyps.end() )
-      {
+        toNotify = ( GetHypotheses( aSubMesh, *compatibleHypoKind, usedHyps, true ) &&
+                     std::find( usedHyps.begin(), usedHyps.end(), hyp ) != usedHyps.end() );
+      }
+    }
+    if ( toNotify )
       smToNotify.push_back( aSubMesh );
-      }
-    }
+
+    if ( !aSubMesh->IsEmpty() &&
+         aSubMesh->GetSubShape().ShapeType() == TopAbs_EDGE &&
+         !toNotify )
+      allMeshedEdgesNotified = false;
   }
 
-  for ( size_t i = 0; i < smToNotify.size(); ++i )
-  {
+  // if all meshed EDGEs will be notified then the notification is equivalent
+  // to the whole mesh clearing
+  if ( allMeshedEdgesNotified )
+    Clear();
+  else
+    // notify in reverse order to avoid filling of the pool of IDs
+    for ( int i = smToNotify.size()-1; i >= 0; --i )
       smToNotify[i]->AlgoStateEngine(SMESH_subMesh::MODIF_HYP,
                                      const_cast< SMESH_Hypothesis*>( hyp ));
-  }
 
   HasModificationsToDiscard(); // to reset _isModified flag if mesh becomes empty
   GetMeshDS()->Modified();

src/SMESH/SMESH_subMesh.cxx

@@ -1272,25 +1272,35 @@ void SMESH_subMesh::DumpAlgoState(bool isMain)
 static void cleanSubMesh( SMESH_subMesh * subMesh )
 {
   if (subMesh) {
-    if (SMESHDS_SubMesh * subMeshDS = subMesh->GetSubMeshDS()) {
+    if (SMESHDS_SubMesh * subMeshDS = subMesh->GetSubMeshDS())
+    {
       SMESHDS_Mesh * meshDS = subMesh->GetFather()->GetMeshDS();
-      SMDS_ElemIteratorPtr ite = subMeshDS->GetElements();
+      int nbElems = subMeshDS->NbElements();
+      if ( nbElems > 0 )
+      {
+        // start from elem with max ID to avoid filling the pool of IDs
+        const SMDS_MeshElement * lastElem = subMeshDS->GetElement( nbElems-1 );
+        bool rev = ( lastElem->GetID() == meshDS->MaxElementID() );
+        SMDS_ElemIteratorPtr ite = subMeshDS->GetElements( rev );
         while (ite->more()) {
           const SMDS_MeshElement * elt = ite->next();
-        //MESSAGE( " RM elt: "<<elt->GetID()<<" ( "<<elt->NbNodes()<<" )" );
-        //meshDS->RemoveElement(elt);
           meshDS->RemoveFreeElement(elt, 0);
         }
-
-      SMDS_NodeIteratorPtr itn = subMeshDS->GetNodes();
+      }
+      int nbNodes = subMeshDS->NbNodes();
+      if ( nbNodes > 0 )
+      {
+        const SMDS_MeshNode * lastNode = subMeshDS->GetNode( nbNodes-1 );
+        bool rev = ( lastNode->GetID() == meshDS->MaxNodeID() );
+        SMDS_NodeIteratorPtr itn = subMeshDS->GetNodes( rev );
         while (itn->more()) {
           const SMDS_MeshNode * node = itn->next();
-        //MESSAGE( " RM node: "<<node->GetID());
           if ( node->NbInverseElements() == 0 )
             meshDS->RemoveFreeNode(node, 0);
           else // for StdMeshers_CompositeSegment_1D: node in one submesh, edge in another
             meshDS->RemoveNode(node);
         }
+      }
       subMeshDS->Clear();
     }
   }

src/SMESHDS/SMESHDS_SubMesh.cxx

@@ -361,13 +361,23 @@ public:
 //purpose  :
 //=======================================================================
 
-SMDS_ElemIteratorPtr SMESHDS_SubMesh::GetElements() const
+SMDS_ElemIteratorPtr SMESHDS_SubMesh::GetElements( bool reverse ) const
 {
   if ( IsComplexSubmesh() )
     return SMDS_ElemIteratorPtr( new MyElemIterator( mySubMeshes ));
 
-  return SMDS_ElemIteratorPtr
-    (new MySetIterator<const SMDS_MeshElement*, std::vector<const SMDS_MeshElement*> >(myElements));
+  if ( reverse )
+  {
+    typedef
+      SMDS_SetIterator< const SMDS_MeshElement*,
+                        std::vector< const SMDS_MeshElement* >::const_reverse_iterator > RIter;
+    return SMDS_ElemIteratorPtr( new RIter( myElements.rbegin(), myElements.rend() ));
+  }
+
+  typedef
+    SMDS_SetIterator< const SMDS_MeshElement*,
+                      std::vector< const SMDS_MeshElement* >::const_iterator > FIter;
+  return SMDS_ElemIteratorPtr( new FIter( myElements.begin(), myElements.end() ));
 }
 
 //=======================================================================
@@ -375,13 +385,23 @@ SMDS_ElemIteratorPtr SMESHDS_SubMesh::GetElements() const
 //purpose  :
 //=======================================================================
 
-SMDS_NodeIteratorPtr SMESHDS_SubMesh::GetNodes() const
+SMDS_NodeIteratorPtr SMESHDS_SubMesh::GetNodes( bool reverse ) const
 {
   if ( IsComplexSubmesh() )
     return SMDS_NodeIteratorPtr( new MyNodeIterator( mySubMeshes ));
 
-  return SMDS_NodeIteratorPtr
-    (new MySetIterator<const SMDS_MeshNode*, std::vector<const SMDS_MeshNode*> >(myNodes));
+  if ( reverse )
+  {
+    typedef
+      SMDS_SetIterator< const SMDS_MeshNode*,
+                        std::vector< const SMDS_MeshNode* >::const_reverse_iterator > RIter;
+    return SMDS_NodeIteratorPtr( new RIter( myNodes.rbegin(), myNodes.rend() ));
+  }
+
+  typedef
+    SMDS_SetIterator< const SMDS_MeshNode*,
+                      std::vector< const SMDS_MeshNode* >::const_iterator > FIter;
+  return SMDS_NodeIteratorPtr( new FIter( myNodes.begin(), myNodes.end() ));
 }
 
 //=======================================================================

src/SMESHDS/SMESHDS_SubMesh.hxx

@@ -65,9 +65,9 @@ class SMESHDS_EXPORT SMESHDS_SubMesh
 
   // for both types
   virtual int NbElements() const;
-  virtual SMDS_ElemIteratorPtr GetElements() const;
+  virtual SMDS_ElemIteratorPtr GetElements(bool reverse=false) const;
   virtual int NbNodes() const;
-  virtual SMDS_NodeIteratorPtr GetNodes() const;
+  virtual SMDS_NodeIteratorPtr GetNodes(bool reverse=false) const;
   virtual bool Contains(const SMDS_MeshElement * ME) const;      // check if elem or node is in
   virtual bool IsQuadratic() const;
 

src/SMESHGUI/SMESHGUI_Hypotheses.cxx

@@ -94,7 +94,9 @@ void SMESHGUI_GenericHypothesisCreator::create( SMESH::SMESH_Hypothesis_ptr init
 
 void SMESHGUI_GenericHypothesisCreator::create( bool           isAlgo,
                                                 const QString& theHypName,
-                                                QWidget* theParent, QObject* obj, const QString& slot )
+                                                QWidget*       theParent,
+                                                QObject*       obj,
+                                                const QString& slot )
 {
   myIsCreate = true;