0021343: EDF 1930 SMESH: Huge memory occupation when assigning an hypothesis to a big model

src/OBJECT/SMESH_PreviewActorsCollection.cxx

@@ -17,16 +17,9 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//  SMESH OBJECT : interactive object for SMESH visualization
-//  File   : SMESH_PreviewActorsCollection.cxx
-//  Author : 
-//  Module : SMESH
-//
 #include "SMESH_PreviewActorsCollection.h"
 
-#include "utilities.h"
+#include <utilities.h>
-
-#include "SALOME_InteractiveObject.hxx"
 
 // OCC includes
 #include <TopoDS.hxx>
@@ -39,14 +32,17 @@
 #include <vtkRenderer.h>
 #include <vtkProperty.h>
 
-#include "VTKViewer_Actor.h"
+#include <QSet>
 
-#include "SVTK_DeviceActor.h"
+// GEOM includes
-#include "SALOME_Actor.h"
+#include <GEOM_Actor.h>
 
-// QT
+// GUI includes
-#include <QString>
+#include <VTKViewer_Actor.h>
-#include <QColor>
+#include <SVTK_DeviceActor.h>
+#include <SALOME_InteractiveObject.hxx>
+#include <SUIT_ResourceMgr.h>
+#include <SUIT_Session.h>
 
 #ifdef _DEBUG_
 static int MYDEBUG = 0;
@@ -54,38 +50,34 @@ static int MYDEBUG = 0;
 static int MYDEBUG = 0;
 #endif
 
-using namespace std;
 
-
+SMESH_PreviewActorsCollection::SMESH_PreviewActorsCollection() :
-//vtkStandardNewMacro(SMESH_PreviewActorsCollection);
+  mySelector( 0 ), myRenderer( 0 ), myCurrentChunk( 0 ), myChunkSize( 0 ), myIsShown( true )
-
-
-SMESH_PreviewActorsCollection
-::SMESH_PreviewActorsCollection()
 {
   if(MYDEBUG) MESSAGE("SMESH_PreviewActorsCollection - "<<this);
 }
 
 
-SMESH_PreviewActorsCollection
+SMESH_PreviewActorsCollection::~SMESH_PreviewActorsCollection()
-::~SMESH_PreviewActorsCollection()
 {
   if(MYDEBUG) MESSAGE("~SMESH_PreviewActorsCollection - "<<this);
-  if (myRenderer)
+  clearActors();
-    RemoveFromRender(myRenderer);
-
-  QMap<int, GEOM_Actor*>::iterator iter = myMapOfActors.begin();
-  for ( ; iter != myMapOfActors.end(); ++iter )
-    if ( GEOM_Actor* anActor = iter.value() )
-      anActor->Delete();
-  myMapOfActors.clear();
 }
 
-bool SMESH_PreviewActorsCollection::Init( const TopoDS_Shape& theShape, TopAbs_ShapeEnum theType, const QString& theEntry )
+bool SMESH_PreviewActorsCollection::Init( const TopoDS_Shape& theShape,
+					  TopAbs_ShapeEnum theType,
+					  const QString& theEntry )
 {
+  SUIT_ResourceMgr* mgr = SUIT_Session::session()->resourceMgr();
+
+  myType =  theType;
+  myEntry = theEntry;
   myMainShape = theShape;
   myMapOfActors.clear();
   myMapOfShapes.Clear();
+  myIndices.clear();
+  myCurrentChunk = 0;
+  myChunkSize = mgr->integerValue( "SMESH", "preview_actor_chunk_size", 100 );
 
   if ( theShape.IsNull() )
     return false;
@@ -95,65 +87,23 @@ bool SMESH_PreviewActorsCollection::Init( const TopoDS_Shape& theShape, TopAbs_S
   
   // get indexes of seleted elements
   TopExp::MapShapes( theShape, myMapOfShapes );
-
   TopExp_Explorer exp( theShape, theType );
-  for ( ; exp.More(); exp.Next() ) {
+  QSet<int> indices;
-    int index = myMapOfShapes.FindIndex( exp.Current() );
+  for ( ; exp.More(); exp.Next() )
-    if ( index && !myMapOfActors.contains( index ) ) { 
+    indices << myMapOfShapes.FindIndex( exp.Current() );
-      // create actor if the index is present
+  myIndices = indices.toList();
-      if ( GEOM_Actor* anActor = createActor( exp.Current().Oriented(TopAbs_FORWARD))) {
+  qSort(myIndices);
-        // Create new entry for actor
-        QString aString = theEntry;
-        aString += QString("_%1").arg( index ); // add index to actor entry
 
-        // Create interactive object
+  // show current chunk
-        Handle( SALOME_InteractiveObject ) anIO = new SALOME_InteractiveObject();
+  showCurrentChunk();
-        anIO->setEntry( aString.toLatin1().constData() );
 
-        // Init Actor
+  return count() > 0;
-        anActor->SetVectorMode( theType==TopAbs_EDGE );
-        anActor->setIO( anIO );
-        anActor->SetSelector( mySelector );
-        anActor->SetPickable( true );
-        anActor->SetResolveCoincidentTopology( true );
-
-        // Add Actor to the Actors Map
-        myMapOfActors.insert(index, anActor);
-      }
-    }
-  }
-  mySelector->ClearIObjects();
-
-  return true;
 }
 
 GEOM_Actor* SMESH_PreviewActorsCollection::createActor(const TopoDS_Shape& shape)
 {
   GEOM_Actor* actor = GEOM_Actor::New();
   actor->SetShape( shape, 0, 0 );
-
-  //Color Properties
-  /*    
-        vtkProperty* aProp = vtkProperty::New();
-        vtkProperty* aHLProp = vtkProperty::New();
-        vtkProperty* aPHLProp = vtkProperty::New();
-        
-        aProp->SetColor( 255, 0, 0);
-        actor->SetProperty(aProp);
-
-        aHLProp->SetColor( 255, 255, 255);
-        actor->SetHighlightProperty(aHLProp);
-
-        aPHLProp->SetColor( 155, 155, 155);
-        aPHLProp->SetLineWidth ( 3 );
-        aPHLProp->SetOpacity ( 0.75 );
-        actor->SetPreHighlightProperty(aPHLProp);
-
-        aProp->Delete();
-        aHLProp->Delete();
-        aPHLProp->Delete();
-  */
-
   return actor;
 }
 
@@ -172,11 +122,14 @@ void SMESH_PreviewActorsCollection::AddToRender(vtkRenderer* theRenderer)
   myRenderer = theRenderer;
 
   QMap<int, GEOM_Actor*>::iterator iter = myMapOfActors.begin();
-  for ( ; iter != myMapOfActors.end(); ++iter )
+  for ( ; iter != myMapOfActors.end(); ++iter ) {
+    iter.value()->SetVisibility( myIsShown );
     iter.value()->AddToRender( theRenderer );
   }
+}
 
-void SMESH_PreviewActorsCollection::RemoveFromRender(vtkRenderer* theRenderer){
+void SMESH_PreviewActorsCollection::RemoveFromRender(vtkRenderer* theRenderer)
+{
   QMap<int, GEOM_Actor*>::iterator iter = myMapOfActors.begin();
   for ( ; iter != myMapOfActors.end(); ++iter )
     iter.value()->RemoveFromRender( theRenderer );
@@ -187,20 +140,108 @@ void SMESH_PreviewActorsCollection::SetSelector(SVTK_Selector* theSelector)
   mySelector = theSelector;
 }
 
-void SMESH_PreviewActorsCollection::HighlightAll( bool theHighlight ){
+void SMESH_PreviewActorsCollection::HighlightAll( bool theHighlight )
+{
   QMap<int, GEOM_Actor*>::iterator iter = myMapOfActors.begin();
   for ( ; iter != myMapOfActors.end(); ++iter )
     iter.value()->Highlight( theHighlight );
 }
 
-void SMESH_PreviewActorsCollection::HighlightID( int index ){
+void SMESH_PreviewActorsCollection::HighlightID( int index )
+{
   GEOM_Actor* anActor = GetActorByIndex( index );
   if ( anActor && !anActor->isHighlighted() )
     anActor->Highlight( true );
 }
 
-void SMESH_PreviewActorsCollection::SetShown( bool shown ){
+void SMESH_PreviewActorsCollection::SetShown( bool shown )
+{
+  myIsShown = shown;
   QMap<int, GEOM_Actor*>::iterator iter = myMapOfActors.begin();
   for ( ; iter != myMapOfActors.end(); ++iter )
     iter.value()->SetVisibility( shown );
 }
+
+int SMESH_PreviewActorsCollection::count() const
+{
+  return myIndices.count();
+}
+
+int SMESH_PreviewActorsCollection::chunkSize() const
+{
+  return myChunkSize;
+}
+
+int SMESH_PreviewActorsCollection::currentChunk() const
+{
+  return myCurrentChunk;
+}
+
+bool SMESH_PreviewActorsCollection::hasPrevious() const
+{
+  return chunkSize() > 0 && currentChunk() > 0;
+}
+
+bool SMESH_PreviewActorsCollection::hasNext() const
+{
+  return chunkSize() > 0 && (currentChunk()+1)*chunkSize() < count();
+}
+
+void SMESH_PreviewActorsCollection::previous()
+{
+  if ( !hasPrevious() ) return;
+  myCurrentChunk--;
+  showCurrentChunk();
+}
+
+void SMESH_PreviewActorsCollection::next()
+{
+  if ( !hasNext() ) return;
+  myCurrentChunk++;
+  showCurrentChunk();
+}
+
+void SMESH_PreviewActorsCollection::showCurrentChunk()
+{
+  clearActors();
+  int imin = currentChunk() * chunkSize();
+  int imax = std::min( (currentChunk()+1) * chunkSize(), count() );
+  for ( int i = imin; i < imax; i++ ) {
+    int index = myIndices[i];
+    if ( !index || myMapOfActors.contains( index ) ) continue;
+    TopoDS_Shape s = myMapOfShapes.FindKey( index );
+    if ( s.IsNull() ) continue;
+    // create actor if the index is present
+    if ( GEOM_Actor* anActor = createActor( s.Oriented(TopAbs_FORWARD))) {
+      // Create new entry for actor
+      QString entry = QString( "%1_%2" ).arg( myEntry ).arg( index );
+      // Create interactive object
+      Handle( SALOME_InteractiveObject ) anIO = new SALOME_InteractiveObject();
+      anIO->setEntry( entry.toLatin1().constData() );
+      // Init Actor
+      anActor->SetVectorMode( myType==TopAbs_EDGE );
+      anActor->setIO( anIO );
+      anActor->SetSelector( mySelector );
+      anActor->SetPickable( true );
+      anActor->SetResolveCoincidentTopology( true );
+
+      // Add Actor to the Actors Map
+      myMapOfActors.insert(index, anActor);
+    }
+  }
+  mySelector->ClearIObjects();
+  if ( myRenderer )
+    AddToRender( myRenderer );
+}
+
+void SMESH_PreviewActorsCollection::clearActors()
+{
+  if (myRenderer)
+    RemoveFromRender(myRenderer);
+
+  QMap<int, GEOM_Actor*>::iterator iter = myMapOfActors.begin();
+  for ( ; iter != myMapOfActors.end(); ++iter )
+    if ( GEOM_Actor* anActor = iter.value() )
+      anActor->Delete();
+  myMapOfActors.clear();
+}

src/OBJECT/SMESH_PreviewActorsCollection.h

@@ -26,18 +26,18 @@
 #ifndef SMESH_PREVIEW_ACTOR_COLLECTION_H
 #define SMESH_PREVIEW_ACTOR_COLLECTION_H
 
-#include "SMESH_Actor.h"
-#include <GEOM_Actor.h>
 #include "SMESH_Object.h"
+
 #include <TopoDS_Shape.hxx>
-#include <SMDS_SetIterator.hxx>
 #include <TopAbs_ShapeEnum.hxx>
 #include <TopTools_IndexedMapOfShape.hxx>
-#include <QString>
+#include <QList>
 #include <QMap>
+#include <QString>
 
 class vtkRenderer;
 class GEOM_Actor;
+class SVTK_Selector;
 
 class SMESHOBJECT_EXPORT SMESH_PreviewActorsCollection
 {
@@ -61,15 +61,31 @@ class SMESHOBJECT_EXPORT SMESH_PreviewActorsCollection
 
   void            SetShown( bool );
 
- protected:
+  int             count() const;
-   GEOM_Actor*    createActor( const TopoDS_Shape& );
+  int             chunkSize() const;
+  int             currentChunk() const;
+  bool            hasPrevious() const;
+  bool            hasNext() const;
+  void            previous();
+  void            next();
   
 protected:
+  GEOM_Actor*    createActor( const TopoDS_Shape& );
+  void           showCurrentChunk();
+  void           clearActors();
+   
+protected:
+  TopAbs_ShapeEnum             myType;
+  QString                      myEntry;
   TopoDS_Shape                 myMainShape;
   SVTK_Selector*               mySelector;
   vtkRenderer*                 myRenderer;
   TopTools_IndexedMapOfShape   myMapOfShapes;
   QMap<int, GEOM_Actor*>       myMapOfActors;
+  QList<int>                   myIndices;
+  int                          myCurrentChunk;
+  int                          myChunkSize;
+  bool                         myIsShown;
 };