First step for the "21793: [CEA 625] Clipping : from coordinates or from bounding box" issue.

src/OBJECT/SMESH_Actor.cxx

@@ -75,6 +75,7 @@
 
 #include <vtkMath.h>
 #include <vtkPlane.h>
+#include <vtkPlaneCollection.h>
 #include <vtkImplicitBoolean.h>
 #include <vtkImplicitFunctionCollection.h>
 
@@ -534,6 +535,8 @@ SMESH_ActorDef::SMESH_ActorDef()
   myImplicitBoolean = vtkImplicitBoolean::New();
   myImplicitBoolean->SetOperationTypeToIntersection();
 
+  myPlaneCollection = vtkPlaneCollection::New();
+
   //Quadratic 2D elements representation
   //-----------------------------------------------------------------------------
   int aQuadratic2DMode = mgr->integerValue( "SMESH", "quadratic_mode", 0);
@@ -619,6 +622,7 @@ SMESH_ActorDef::~SMESH_ActorDef()
   //my0DExtActor->Delete();
 
   myImplicitBoolean->Delete();
+  myPlaneCollection->Delete();
 
 #ifndef DISABLE_PLOT2DVIEWER
   if(my2dHistogram) {
@@ -2149,10 +2153,67 @@ SMESH_ActorDef::AddClippingPlane(vtkPlane* thePlane)
   return myCippingPlaneCont.size();
 }
 
+void
+SMESH_ActorDef::AddOpenGLClippingPlane(vtkPlane* thePlane)
+{
+  if(thePlane)
+    myPlaneCollection->AddItem( thePlane );
+}
+
+void
+SMESH_ActorDef::SetOpenGLClippingPlane()
+{
+  // before use this method you must add clipping planes using method
+  // SMESH_ActorDef::AddOpenGLClippingPlane(vtkPlane* thePlane)
+  if( !myPlaneCollection->GetNumberOfItems() )
+    return;
+
+  // It is necessary to set plane collection for each mapper of actor
+  // and update current inputs of mapper
+  myNodeActor->SetPlaneCollection( myPlaneCollection );
+  myNodeActor->SetUnstructuredGrid(myVisualObj->GetUnstructuredGrid());
+
+  myBaseActor->SetPlaneCollection( myPlaneCollection );
+  myBaseActor->SetUnstructuredGrid(myVisualObj->GetUnstructuredGrid());
+
+  myHighlitableActor->SetPlaneCollection( myPlaneCollection );
+  myHighlitableActor->SetUnstructuredGrid(myVisualObj->GetUnstructuredGrid());
+
+  my1DActor->SetPlaneCollection( myPlaneCollection );
+  my1DActor->SetUnstructuredGrid(myVisualObj->GetUnstructuredGrid());
+
+  my2DActor->SetPlaneCollection( myPlaneCollection );
+  my2DActor->SetUnstructuredGrid(myVisualObj->GetUnstructuredGrid());
+
+  myNodeExtActor->SetPlaneCollection( myPlaneCollection );
+  myNodeExtActor->SetUnstructuredGrid(myVisualObj->GetUnstructuredGrid());
+
+  my0DActor->SetPlaneCollection( myPlaneCollection );
+  my0DActor->SetUnstructuredGrid(myVisualObj->GetUnstructuredGrid());
+
+  myBallActor->SetPlaneCollection( myPlaneCollection );
+  myBallActor->SetUnstructuredGrid(myVisualObj->GetUnstructuredGrid());
+
+  my1DExtActor->SetPlaneCollection( myPlaneCollection );
+  my1DExtActor->SetUnstructuredGrid(myVisualObj->GetUnstructuredGrid());
+
+  my2DExtActor->SetPlaneCollection( myPlaneCollection );
+  my2DExtActor->SetUnstructuredGrid(myVisualObj->GetUnstructuredGrid());
+
+  my3DActor->SetPlaneCollection( myPlaneCollection );
+  my3DActor->SetUnstructuredGrid(myVisualObj->GetUnstructuredGrid());
+
+  my3DExtActor->SetPlaneCollection( myPlaneCollection );
+  my3DExtActor->SetUnstructuredGrid(myVisualObj->GetUnstructuredGrid());
+
+  Modified();
+}
+
 void
 SMESH_ActorDef::
 RemoveAllClippingPlanes()
 {
+  myPlaneCollection->RemoveAllItems();
   myImplicitBoolean->GetFunction()->RemoveAllItems();
   myImplicitBoolean->GetFunction()->Modified(); // VTK bug
   myCippingPlaneCont.clear();

src/OBJECT/SMESH_Actor.h

@@ -154,6 +154,8 @@ class SMESHOBJECT_EXPORT SMESH_Actor: public SALOME_Actor
   virtual vtkIdType GetNumberOfClippingPlanes() = 0; 
   virtual vtkPlane* GetClippingPlane(vtkIdType theID) = 0; 
   virtual vtkIdType AddClippingPlane(vtkPlane* thePlane) = 0; 
+  virtual void AddOpenGLClippingPlane(vtkPlane* thePlane) = 0;
+  virtual void SetOpenGLClippingPlane() = 0;
 
   virtual TVisualObjPtr GetObject() = 0;
 

src/OBJECT/SMESH_ActorDef.h

@@ -65,6 +65,7 @@ class vtkLookupTable;
 class vtkPlane;
 class vtkImplicitBoolean;
 class vtkTimeStamp;
+class vtkPlaneCollection;
 
 class SMESH_DeviceActor;
 class SMESH_NodeLabelActor;
@@ -212,6 +213,8 @@ class SMESH_ActorDef : public SMESH_Actor
   virtual vtkIdType GetNumberOfClippingPlanes();
   virtual vtkPlane* GetClippingPlane(vtkIdType theID);
   virtual vtkIdType AddClippingPlane(vtkPlane* thePlane); 
+  virtual void AddOpenGLClippingPlane(vtkPlane* thePlane);
+  virtual void SetOpenGLClippingPlane();
 
   virtual TVisualObjPtr GetObject() { return myVisualObj;}
 
@@ -296,6 +299,7 @@ class SMESH_ActorDef : public SMESH_Actor
   bool myIsShrunk;
   
   vtkImplicitBoolean* myImplicitBoolean;
+  vtkPlaneCollection* myPlaneCollection;
   typedef TVTKSmartPtr<vtkPlane> TPlanePtr;
   typedef std::vector<TPlanePtr> TCippingPlaneCont;
   TCippingPlaneCont myCippingPlaneCont;

src/OBJECT/SMESH_DeviceActor.cxx

@@ -63,6 +63,8 @@
 
 #include <vtkRenderer.h>
 
+#include <vtkPlaneCollection.h>
+
 #include "utilities.h"
 
 #ifdef _DEBUG_
@@ -90,6 +92,7 @@ SMESH_DeviceActor
 
   myProperty = vtkProperty::New();
   myMapper = VTKViewer_PolyDataMapper::New();
+  myPlaneCollection = vtkPlaneCollection::New();
 
   vtkMapper::GetResolveCoincidentTopologyPolygonOffsetParameters(myPolygonOffsetFactor,
                                                                  myPolygonOffsetUnits);
@@ -139,6 +142,7 @@ SMESH_DeviceActor
   if(MYDEBUG) MESSAGE("~SMESH_DeviceActor - "<<this);
 
   myMapper->Delete();
+  myPlaneCollection->Delete();
 
   myProperty->Delete();
 
@@ -256,12 +260,20 @@ SMESH_DeviceActor
 
     anId++; // 5
     myMapper->SetInputConnection( myPassFilter[ anId ]->GetOutputPort() );
+    if( myPlaneCollection->GetNumberOfItems() )
+      myMapper->SetClippingPlanes( myPlaneCollection );
 
     vtkLODActor::SetMapper( myMapper );
     Modified();
   }
 }
 
+void
+SMESH_DeviceActor
+::SetPlaneCollection( vtkPlaneCollection* theCollection )
+{
+  myPlaneCollection = theCollection;
+}
 
 VTKViewer_ExtractUnstructuredGrid* 
 SMESH_DeviceActor

src/OBJECT/SMESH_DeviceActor.h

@@ -45,6 +45,7 @@ class vtkUnstructuredGrid;
 class vtkLookupTable;
 class vtkImplicitBoolean;
 class vtkPassThroughFilter;
+class vtkPlaneCollection;
 
 class VTKViewer_Transform;
 class VTKViewer_TransformFilter;
@@ -119,6 +120,8 @@ class SMESHOBJECT_EXPORT SMESH_DeviceActor: public vtkLODActor{
   VTKViewer_ExtractUnstructuredGrid* GetExtractUnstructuredGrid();
   vtkUnstructuredGrid* GetUnstructuredGrid();
 
+  void SetPlaneCollection( vtkPlaneCollection* theCollection );
+
   void SetControlMode(SMESH::Controls::FunctorPtr theFunctor,
                       SMESH_ScalarBarActor* theScalarBarActor,
                       vtkLookupTable* theLookupTable);
@@ -158,6 +161,7 @@ class SMESHOBJECT_EXPORT SMESH_DeviceActor: public vtkLODActor{
   VTKViewer_PolyDataMapper *myMapper;
   TVisualObjPtr myVisualObj;
 
+  vtkPlaneCollection* myPlaneCollection;
   vtkProperty *myProperty;
   EReperesent myRepresentation;
 

src/SMESHGUI/SMESHGUI.cxx

@@ -960,7 +960,7 @@
     {
       SMESH::SMESH_GroupBase_var aGroupObject = aListOfGroups[i];
       //SALOMEDS::Color aColor = aGroupObject->GetColor();
-      
+
 #ifdef SIMPLE_AUTOCOLOR   // simplified algorithm for auto-colors
       SALOMEDS::Color aColor = SMESHGUI::getPredefinedUniqueColor();
 #else                     // old algorithm  for auto-colors
@@ -1004,7 +1004,7 @@
     SALOME_ListIO selected;
     if( aSel )
       aSel->selectedObjects( selected );
-    
+
     if ( selected.IsEmpty() ) return;
     SALOME_ListIteratorOfListIO It( selected );
     for ( ; It.More(); It.Next() ) {
@@ -1228,7 +1228,7 @@
     SALOME_ListIO selected;
     if( aSel ) {
       aSel->selectedObjects( selected );
-      
+
       if(selected.Extent()){
         Handle(SALOME_InteractiveObject) anIObject = selected.First();
         _PTR(Study) aStudy = SMESH::GetActiveStudyDocument();
@@ -2065,7 +2065,7 @@ bool SMESHGUI::automaticUpdate( SMESH::SMESH_Mesh_ptr theMesh,
     }
     total += nbBalls;
   }
-  
+
   return autoUpdate && !exceeded;
 }
 
@@ -3505,7 +3505,7 @@ bool SMESHGUI::OnGUIEvent( int theCommandID )
                                tr( "NOT_A_VTK_VIEWER" ) );
     }
     break;
-  case 6032: 
+  case 6032:
     OverallMeshQuality();
     break;
   case 9010:
@@ -4516,7 +4516,7 @@ void SMESHGUI::initialize( CAM_Application* app )
   popupMgr()->insert ( action( 6031 ), aSubId, -1 ); // EQUAL_VOLUME
   popupMgr()->setRule( action( 6031 ), aMeshInVtkHasVolumes, QtxPopupMgr::VisibleRule );
   popupMgr()->setRule( action( 6031 ), "controlMode = 'eCoincidentElems3D'", QtxPopupMgr::ToggleRule );
- 
+
   popupMgr()->insert( separator(), anId, -1 );
 
   popupMgr()->insert( action( 201 ), anId, -1 ); // SCALAR_BAR_PROP
@@ -5533,13 +5533,34 @@ void SMESHGUI::storeVisualParameters (int savePoint)
           aPropertyName += gSeparator;
           aPropertyName += QString::number( anId );
 
-          QString aPropertyValue = QString::number( (int)aPlane->GetOrientation() ).toLatin1().constData();
+          QString aPropertyValue = QString::number( (int)aPlane->PlaneMode ).toLatin1().constData();
           aPropertyValue += gDigitsSep;
-          aPropertyValue += QString::number( aPlane->GetDistance() ).toLatin1().constData();
+          aPropertyValue += QString::number( aPlane->IsOpenGLClipping ).toLatin1().constData();
           aPropertyValue += gDigitsSep;
-          aPropertyValue += QString::number( aPlane->myAngle[0] ).toLatin1().constData();
+          if ( aPlane->PlaneMode == SMESH::Absolute ) {
-          aPropertyValue += gDigitsSep;
+            aPropertyValue += QString::number( aPlane->myAbsoluteOrientation ).toLatin1().constData();
-          aPropertyValue += QString::number( aPlane->myAngle[1] ).toLatin1().constData();
+            aPropertyValue += gDigitsSep;
+            aPropertyValue += QString::number( aPlane->X ).toLatin1().constData();
+            aPropertyValue += gDigitsSep;
+            aPropertyValue += QString::number( aPlane->Y ).toLatin1().constData();
+            aPropertyValue += gDigitsSep;
+            aPropertyValue += QString::number( aPlane->Z ).toLatin1().constData();
+            aPropertyValue += gDigitsSep;
+            aPropertyValue += QString::number( aPlane->Dx ).toLatin1().constData();
+            aPropertyValue += gDigitsSep;
+            aPropertyValue += QString::number( aPlane->Dy ).toLatin1().constData();
+            aPropertyValue += gDigitsSep;
+            aPropertyValue += QString::number( aPlane->Dz ).toLatin1().constData();
+          }
+          else if ( aPlane->PlaneMode == SMESH::Relative ) {
+            aPropertyValue += QString::number( (int)aPlane->myRelativeOrientation ).toLatin1().constData();
+            aPropertyValue += gDigitsSep;
+            aPropertyValue += QString::number( aPlane->GetDistance() ).toLatin1().constData();
+            aPropertyValue += gDigitsSep;
+            aPropertyValue += QString::number( aPlane->myAngle[0] ).toLatin1().constData();
+            aPropertyValue += gDigitsSep;
+            aPropertyValue += QString::number( aPlane->myAngle[1] ).toLatin1().constData();
+          }
 
           ip->setProperty( aPropertyName.toStdString(), aPropertyValue.toStdString() );
         }
@@ -5749,9 +5770,13 @@ void SMESHGUI::storeVisualParameters (int savePoint)
 // data structures for clipping planes processing
 typedef struct {
   int Id;
-  vtkIdType Orientation;
+  int Mode;
+  bool isOpenGLClipping;
+  vtkIdType RelativeOrientation;
   double Distance;
   double Angle[2];
+  int AbsoluteOrientation;
+  double X, Y, Z, Dx, Dy, Dz;
 } TPlaneData;
 typedef std::list<TPlaneData>         TPlaneDataList;
 typedef std::map<int, TPlaneDataList> TPlaneDataMap;
@@ -5868,31 +5893,80 @@ void SMESHGUI::restoreVisualParameters (int savePoint)
         continue;
 
       QStringList aPropertyValueList = aPropertyValue.split( gDigitsSep, QString::SkipEmptyParts );
-      if( aPropertyValueList.size() != 4 )
+      if( aPropertyValueList.size() != 6 && aPropertyValueList.size() != 9 )
         continue;
 
       TPlaneData aPlaneData;
       aPlaneData.Id = aClippingPlaneId;
 
       ok = false;
-      aPlaneData.Orientation = aPropertyValueList[0].toInt( &ok );
+      aPlaneData.Mode = aPropertyValueList[0].toInt( &ok );
+      if( !ok )
+        continue;
+      
+      ok = false;
+      aPlaneData.isOpenGLClipping = aPropertyValueList[1].toInt( &ok );
       if( !ok )
         continue;
 
-      ok = false;
+      if ( (SMESH::Mode)aPlaneData.Mode == SMESH::Absolute )
-      aPlaneData.Distance = aPropertyValueList[1].toDouble( &ok );
+      {
-      if( !ok )
+        ok = false;
-        continue;
+        aPlaneData.AbsoluteOrientation = aPropertyValueList[2].toInt( &ok );
+        if( !ok )
+          continue;
 
-      ok = false;
+        ok = false;
-      aPlaneData.Angle[0] = aPropertyValueList[2].toDouble( &ok );
+        aPlaneData.X = aPropertyValueList[3].toDouble( &ok );
-      if( !ok )
+        if( !ok )
-        continue;
+          continue;
 
-      ok = false;
+        ok = false;
-      aPlaneData.Angle[1] = aPropertyValueList[3].toDouble( &ok );
+        aPlaneData.Y = aPropertyValueList[4].toDouble( &ok );
-      if( !ok )
+        if( !ok )
-        continue;
+          continue;
+
+        ok = false;
+        aPlaneData.Z = aPropertyValueList[5].toDouble( &ok );
+        if( !ok )
+          continue;
+
+        ok = false;
+        aPlaneData.Dx = aPropertyValueList[6].toDouble( &ok );
+        if( !ok )
+          continue;
+
+        ok = false;
+        aPlaneData.Dy = aPropertyValueList[7].toDouble( &ok );
+        if( !ok )
+          continue;
+
+        ok = false;
+        aPlaneData.Dz = aPropertyValueList[8].toDouble( &ok );
+        if( !ok )
+          continue;
+      }
+      else if ( (SMESH::Mode)aPlaneData.Mode == SMESH::Relative ) {
+        ok = false;
+        aPlaneData.RelativeOrientation = aPropertyValueList[2].toInt( &ok );
+        if( !ok )
+          continue;
+
+        ok = false;
+        aPlaneData.Distance = aPropertyValueList[3].toDouble( &ok );
+        if( !ok )
+          continue;
+
+        ok = false;
+        aPlaneData.Angle[0] = aPropertyValueList[4].toDouble( &ok );
+        if( !ok )
+          continue;
+
+        ok = false;
+        aPlaneData.Angle[1] = aPropertyValueList[5].toDouble( &ok );
+        if( !ok )
+          continue;
+      }
 
       TPlaneDataList& aPlaneDataList = aPlaneDataMap[ aViewId ];
       aPlaneDataList.push_back( aPlaneData );
@@ -6315,21 +6389,18 @@ void SMESHGUI::restoreVisualParameters (int savePoint)
             // Clipping
             else if (paramNameStr.startsWith("ClippingPlane")) {
               QStringList vals = val.split(gDigitsSep, QString::SkipEmptyParts);
-              // old format - val looks like "Off" or "0:0.5:0:0" (orientation, distance, two angles)
+              // old format - val looks like "Off" or "1:0:0:0.5:0:0" 
+              // (mode(relative), is OpenGL clipping plane, orientation, distance, two angles)
+              // or "0:1:1:10.5:1.0:1.0:15.0:10.0:10.0" 
+              // (mode(absolute), is OpenGL clipping plane, orientation, base point(x, y, z), direction (dx, dy, dz))
               // new format - val looks like "Off" or "0" (plane id)
               // (note: in new format "Off" value is used only for consistency,
               //  so it is processed together with values in old format)
-              bool anIsOldFormat = ( vals.count() == 4 || val == "Off" );
+              bool anIsOldFormat = ( vals.count() == 6 || vals.count() == 9 || val == "Off" );
               if( anIsOldFormat ) {
                 if (paramNameStr == "ClippingPlane1" || val == "Off")
                   aSmeshActor->RemoveAllClippingPlanes();
                 if (val != "Off") {
-                  SMESH::Orientation anOrientation = (SMESH::Orientation)vals[0].toInt();
-                  double aDistance = vals[1].toFloat();
-                  double anAngle[2];
-                  anAngle[0] = vals[2].toFloat();
-                  anAngle[1] = vals[3].toFloat();
-
                   QList<SUIT_ViewManager*> lst;
                   getApp()->viewManagers(viewerTypStr, lst);
                   // SVTK ViewManager always has 1 ViewWindow, so view index is index of view manager
@@ -6341,13 +6412,35 @@ void SMESHGUI::restoreVisualParameters (int savePoint)
 
                     SMESH::TActorList anActorList;
                     anActorList.push_back( aSmeshActor );
-                    SMESH::OrientedPlane* aPlane =
+                    SMESH::OrientedPlane* aPlane = SMESH::OrientedPlane::New( vtkView );
-                      SMESHGUI_ClippingDlg::AddPlane(anActorList, vtkView, anOrientation, aDistance, anAngle);
+                    aPlane->myViewWindow = vtkView;
+                    SMESH::Mode aMode = ( SMESH::Mode )vals[0].toInt();
+                    aPlane->PlaneMode = aMode;
+                    bool isOpenGLClipping = ( bool )vals[1].toInt();
+                    aPlane->IsOpenGLClipping = isOpenGLClipping;
+                    if ( aMode == SMESH::Absolute ) {
+                      aPlane->myAbsoluteOrientation = vals[2].toInt();
+                      aPlane->X = vals[3].toFloat();
+                      aPlane->Y = vals[4].toFloat();
+                      aPlane->Z = vals[5].toFloat();
+                      aPlane->Dx = vals[6].toFloat();
+                      aPlane->Dy = vals[7].toFloat();
+                      aPlane->Dz = vals[8].toFloat();
+                    }
+                    else if ( aMode == SMESH::Relative ) {
+                      aPlane->myRelativeOrientation = (SMESH::Orientation)vals[2].toInt();
+                      aPlane->myDistance = vals[3].toFloat();
+                      aPlane->myAngle[0] = vals[4].toFloat();
+                      aPlane->myAngle[1] = vals[5].toFloat();
+                    }
+
                     if( aPlane ) {
-                      SMESH::ClippingPlaneInfo aClippingPlaneInfo;
+                      if ( SMESHGUI_ClippingDlg::AddPlane( anActorList, aPlane ) ) {
-                      aClippingPlaneInfo.Plane = aPlane;
+                        SMESH::ClippingPlaneInfo aClippingPlaneInfo;
-                      aClippingPlaneInfo.ActorList = anActorList;
+                        aClippingPlaneInfo.Plane = aPlane;
-                      aClippingPlaneInfoList.push_back( aClippingPlaneInfo );
+                        aClippingPlaneInfo.ActorList = anActorList;
+                        aClippingPlaneInfoList.push_back( aClippingPlaneInfo );
+                      }
                     }
                   }
                 }
@@ -6468,23 +6561,40 @@ void SMESHGUI::restoreVisualParameters (int savePoint)
       for( ; anIter4 != aPlaneDataList.end(); anIter4++ ) {
         const TPlaneData& aPlaneData = *anIter4;
         if( aPlaneData.Id == aPlaneId ) {
-          SMESH::OrientedPlane* aPlane =
+          SMESH::OrientedPlane* aPlane = SMESH::OrientedPlane::New( aViewWindow );
-            SMESHGUI_ClippingDlg::AddPlane( anActorList,
+          aPlane->myViewWindow = aViewWindow;
-                                            aViewWindow,
+          aPlane->PlaneMode = (SMESH::Mode)aPlaneData.Mode;
-                                            (SMESH::Orientation)aPlaneData.Orientation,
+          aPlane->IsOpenGLClipping = aPlaneData.isOpenGLClipping;
-                                            aPlaneData.Distance,
+          if ( aPlane->PlaneMode == SMESH::Absolute ) {
-                                            aPlaneData.Angle );
+            aPlane->myAbsoluteOrientation = aPlaneData.AbsoluteOrientation;
+            aPlane->X = aPlaneData.X;
+            aPlane->Y = aPlaneData.Y;
+            aPlane->Z = aPlaneData.Z;
+            aPlane->Dx = aPlaneData.Dx;
+            aPlane->Dy = aPlaneData.Dy;
+            aPlane->Dz = aPlaneData.Dz;
+          }
+          else if ( aPlane->PlaneMode == SMESH::Relative ) {
+            aPlane->myRelativeOrientation = (SMESH::Orientation)aPlaneData.RelativeOrientation;
+            aPlane->myDistance = aPlaneData.Distance;
+            aPlane->myAngle[0] = aPlaneData.Angle[0];
+            aPlane->myAngle[1] = aPlaneData.Angle[1];
+          }
           if( aPlane ) {
-            SMESH::ClippingPlaneInfo aClippingPlaneInfo;
+            if ( SMESHGUI_ClippingDlg::AddPlane( anActorList, aPlane ) ) {
-            aClippingPlaneInfo.Plane = aPlane;
+              SMESH::ClippingPlaneInfo aClippingPlaneInfo;
-            aClippingPlaneInfo.ActorList = anActorList;
+              aClippingPlaneInfo.Plane = aPlane;
-            aClippingPlaneInfoList.push_back( aClippingPlaneInfo );
+              aClippingPlaneInfo.ActorList = anActorList;
+              aClippingPlaneInfoList.push_back( aClippingPlaneInfo );
+            }
           }
           break;
         }
       }
+    
     }
   }
+  
 
   // update all VTK views
   QList<SUIT_ViewManager*> lst;
@@ -6493,6 +6603,14 @@ void SMESHGUI::restoreVisualParameters (int savePoint)
     SUIT_ViewModel* vmodel = (*it)->getViewModel();
     if (vmodel && vmodel->getType() == SVTK_Viewer::Type()) {
       SVTK_ViewWindow* vtkView = (SVTK_ViewWindow*) (*it)->getActiveView();
+      // set OpenGL clipping planes
+      VTK::ActorCollectionCopy aCopy( vtkView->getRenderer()->GetActors() );
+      vtkActorCollection* anAllActors = aCopy.GetActors();
+      anAllActors->InitTraversal();
+      while( vtkActor* aVTKActor = anAllActors->GetNextActor() )
+        if( SMESH_Actor* anActor = SMESH_Actor::SafeDownCast( aVTKActor ) )
+      	  anActor->SetOpenGLClippingPlane();
+      
       vtkView->getRenderer()->ResetCameraClippingRange();
       vtkView->Repaint();
     }
@@ -6691,7 +6809,6 @@ bool SMESHGUI::renameObject( const QString& entry, const QString& name) {
   return false;
 }
 
-
 SALOMEDS::Color SMESHGUI::getPredefinedUniqueColor()
 {
   static QList<QColor> colors;

src/SMESHGUI/SMESHGUI_ClippingDlg.h

@@ -46,60 +46,74 @@
 #include <map>
 #include <vector>
 
+class QGroupBox;
 class QLabel;
 class QPushButton;
 class QCheckBox;
 class QComboBox;
 class QListWidget;
 class QListWidgetItem;
+class QStackedLayout;
+class QSlider;
+class QMenu;
 class SALOME_Actor;
 class SMESHGUI;
 class SMESH_Actor;
-class SMESHGUI_SpinBox;
+class QtxDoubleSpinBox;
 class vtkActor;
 class vtkDataSetMapper;
 class vtkPlaneSource;
+class vtkCallbackCommand;
+class vtkObject;
+class vtkImplicitPlaneWidget;
 
 namespace SMESH
 {
+  enum Mode { Absolute, Relative };
   enum Orientation { XY, YZ, ZX };
 
   class OrientedPlane: public vtkPlane
   {
-    QPointer<SVTK_ViewWindow> myViewWindow;
     vtkDataSetMapper* myMapper;
 
-  public:
+    public:
-    static OrientedPlane *New();
+      static OrientedPlane *New();
-    static OrientedPlane *New(SVTK_ViewWindow* theViewWindow);
+      static OrientedPlane *New(SVTK_ViewWindow* theViewWindow);
-    vtkTypeMacro (OrientedPlane, vtkPlane);
+      vtkTypeMacro (OrientedPlane, vtkPlane);
 
-    SMESH::Orientation myOrientation;
+      QPointer<SVTK_ViewWindow> myViewWindow;
-    float myDistance;
+      SMESH::Orientation myRelativeOrientation;
-    double myAngle[2];
+      float myDistance;
+      double myAngle[2];
+      double X, Y, Z, Dx, Dy, Dz;
+      int myAbsoluteOrientation;
+      bool IsInvert;
+      bool IsOpenGLClipping;
+      Mode PlaneMode;
 
-    vtkPlaneSource* myPlaneSource;
+      vtkPlaneSource* myPlaneSource;
-    SALOME_Actor *myActor;
+      SALOME_Actor *myActor;
 
-    void SetOrientation (SMESH::Orientation theOrientation) { myOrientation = theOrientation; }
+      void SetOrientation (SMESH::Orientation theOrientation) { myRelativeOrientation = theOrientation; }
-    SMESH::Orientation GetOrientation() { return myOrientation; }
+      SMESH::Orientation GetOrientation() { return myRelativeOrientation; }
 
-    void SetDistance (float theDistance) { myDistance = theDistance; }
+      void SetDistance (float theDistance) { myDistance = theDistance; }
-    float GetDistance() { return myDistance; }
+      float GetDistance() { return myDistance; }
 
-    void ShallowCopy (OrientedPlane* theOrientedPlane);
+      void ShallowCopy (OrientedPlane* theOrientedPlane);
+      OrientedPlane* InvertPlane ();
 
-  protected:
+    protected:
-    OrientedPlane(SVTK_ViewWindow* theViewWindow);
+      OrientedPlane(SVTK_ViewWindow* theViewWindow);
-    OrientedPlane();
+      OrientedPlane();
 
-    void Init();
+      void Init();
 
-    ~OrientedPlane();
+      ~OrientedPlane();
-  private:
+    private:
-    // Not implemented.
+      // Not implemented.
-    OrientedPlane (const OrientedPlane&);
+      OrientedPlane (const OrientedPlane&);
-    void operator= (const OrientedPlane&);
+      void operator= (const OrientedPlane&);
   };
 
   typedef vtkSmartPointer<OrientedPlane>    TPlane;
@@ -132,82 +146,133 @@ class SMESHGUI_EXPORT SMESHGUI_ClippingDlg : public QDialog
 public:
   SMESHGUI_ClippingDlg( SMESHGUI*, SVTK_ViewWindow* );
   ~SMESHGUI_ClippingDlg();
-  
-  double                  getDistance() const;
-  void                    setDistance( const double );
-  double                  getRotation1() const;
-  double                  getRotation2() const;
-  void                    setRotation( const double, const double );
-
-  // used in SMESHGUI::restoreVisualParameters() to avoid
-  // declaration of OrientedPlane outside of SMESHGUI_ClippingDlg.cxx
-  static SMESH::OrientedPlane* AddPlane (SMESH::TActorList          theActorList,
-                                         SVTK_ViewWindow*           theViewWindow,
-                                         SMESH::Orientation         theOrientation,
-                                         double                     theDistance,
-                                         const double theAngle[2]);
-
-protected:  
-  void                    keyPressEvent( QKeyEvent* );
 
+  static bool AddPlane ( SMESH::TActorList          theActorList,
+                         SMESH::OrientedPlane*      thePlane );
+protected:
+  void        keyPressEvent( QKeyEvent* );
+  static void ProcessEvents( vtkObject* theObject,
+                             unsigned long theEvent,
+                             void* theClientData,
+                             void* theCallData);
 private:
-  void                    initializePlaneData();
+  double  getDistance() const;
+  void    setDistance( const double );
+  double  getRotation1() const;
+  double  getRotation2() const;
+  void    setRotation( const double, const double );
 
-  void                    synchronize();
+  void    setOrigin(double theVal[3]);
+  void    setDirection(double theVal[3]);
 
-  void                    updateActorList();
+  void    initializePlaneData();
-  SMESH::TActorList       getCurrentActors();
+  void    initParam();
+  void    synchronize();
+  void    updateActorList();
+  void    updateActorItem( QListWidgetItem* theItem,
+                           bool theUpdateSelectAll,
+                           bool theUpdateClippingPlaneMap );
+  SMESH::TActorList getCurrentActors();
 
-  void                    updateActorItem( QListWidgetItem* theItem,
+  void    dumpPlaneData() const;
-                                           bool theUpdateSelectAll,
+  void    absolutePlaneToRelative ( double theOrigin[3], double theDir[3] );
-                                           bool theUpdateClippingPlaneMap );
+  void    setBoundsForPreviewWidget();
+  vtkImplicitPlaneWidget* createPreviewWidget();
 
-  void                    dumpPlaneData() const;
 
 private:
   SMESHGUI*               mySMESHGUI;
   SVTK_ViewWindow*        myViewWindow;
   SMESH::TPlaneDataVector myPlanes;
+
+  vtkCallbackCommand*     myCallback;
+  vtkImplicitPlaneWidget* myPreviewWidget;
+  double                  myBounds[6];
   
   QComboBox*              ComboBoxPlanes;
+  QCheckBox*              isOpenGLClipping;
   QPushButton*            buttonNew;
+  QMenu*                  MenuMode;
   QPushButton*            buttonDelete;
+
   QListWidget*            ActorList;
   QCheckBox*              SelectAllCheckBox;
+
+  QStackedLayout*         ModeStackedLayout;
+
+  QGroupBox*              GroupAbsolutePoint;
+  QLabel*                 TextLabelX;
+  QLabel*                 TextLabelY;
+  QLabel*                 TextLabelZ;
+  QtxDoubleSpinBox*       SpinBox_X;
+  QtxDoubleSpinBox*       SpinBox_Y;
+  QtxDoubleSpinBox*       SpinBox_Z;
+  QPushButton*            resetButton;
+
+  QGroupBox*              GroupAbsoluteDirection;
+  QLabel*                 TextLabelDx;
+  QLabel*                 TextLabelDy;
+  QLabel*                 TextLabelDz;
+  QtxDoubleSpinBox*       SpinBox_Dx;
+  QtxDoubleSpinBox*       SpinBox_Dy;
+  QtxDoubleSpinBox*       SpinBox_Dz;
+  QPushButton*            invertButton;
+  QComboBox*              CBAbsoluteOrientation;
+
+  QGroupBox*              GroupRelative;
   QLabel*                 TextLabelOrientation;
-  QComboBox*              ComboBoxOrientation;
   QLabel*                 TextLabelDistance;
-  SMESHGUI_SpinBox*       SpinBoxDistance;
+  QLabel*                 TextLabelRotation1;
-  QLabel*                 TextLabelRot1;
+  QLabel*                 TextLabelRotation2;
-  SMESHGUI_SpinBox*       SpinBoxRot1;
+  QLabel*                 TLValueDistance;
-  QLabel*                 TextLabelRot2;
+  QLabel*                 TLValueRotation1;
-  SMESHGUI_SpinBox*       SpinBoxRot2;
+  QLabel*                 TLValueRotation2;
+  QSlider*                SliderDistance;
+  QSlider*                SliderRotation1;
+  QSlider*                SliderRotation2;
+  QComboBox*              CBRelativeOrientation;
+
   QCheckBox*              PreviewCheckBox;
   QCheckBox*              AutoApplyCheckBox;
+
   QPushButton*            buttonOk;
   QPushButton*            buttonCancel;
   QPushButton*            buttonApply;
   QPushButton*            buttonHelp;
   
   bool                    myIsSelectPlane;
+  bool                    myIsPreviewMoved;
   QString                 myHelpFileName;
 
+  SMESH::Mode             CurrentMode;
+
 protected slots:
-  virtual void            reject();
+  virtual void reject();
 
 public slots:
-  void                    onSelectPlane( int );
+  void onModeAbsolute();
-  void                    ClickOnNew();
+  void onModeRelative();
-  void                    ClickOnDelete();
+  void ClickOnNew();
-  void                    onActorItemChanged( QListWidgetItem* );
+  void ClickOnDelete();
-  void                    onSelectAll( int );
+  void onSelectPlane( int );
-  void                    onSelectOrientation( int );
+  void onSelectAll( int );
-  void                    SetCurrentPlaneParam();
+  void onActorItemChanged( QListWidgetItem* );
-  void                    OnPreviewToggle( bool );
+  void SetCurrentPlaneParam();
-  void                    onAutoApply(bool);
+
-  void                    ClickOnOk();
+  void onIsOpenGLClipping(bool);
-  void                    ClickOnApply();
+  void OnPreviewToggle( bool );
-  void                    ClickOnHelp();
+  void onAutoApply(bool);
+  void ClickOnOk();
+  void ClickOnApply();
+  void ClickOnHelp();
+
+  void SliderDistanceHasMoved(int);
+  void SliderRotation1HasMoved(int);
+  void SliderRotation2HasMoved(int);
+  void onSelectAbsoluteOrientation( int );
+  void onSelectRelativeOrientation( int );
+  void onReset();
+  void onInvert();
 };
 
 #endif // SMESHGUI_CLIPPINGDLG_H

src/SMESHGUI/SMESHGUI_VTKUtils.cxx

@@ -1396,6 +1396,20 @@ namespace SMESH
                                        double theDist,
                                        double theBounds[6],
                                        double theOrigin[3] )
+  {
+    bool anIsOk = false;
+    anIsOk = ComputeBounds( theActorList, theBounds );
+
+
+    if( !anIsOk )
+      return false;
+
+    DistanceToPosition( theBounds, theNormal, theDist, theOrigin );
+    return true;
+  }
+
+  bool ComputeBounds( std::list<vtkActor*> theActorList,
+                      double theBounds[6])
   {
     bool anIsOk = false;
     theBounds[0] = theBounds[2] = theBounds[4] = VTK_DOUBLE_MAX;
@@ -1416,12 +1430,7 @@ namespace SMESH
         }
       }
     }
-
+    return anIsOk;
-    if( !anIsOk )
-      return false;
-    
-    DistanceToPosition( theBounds, theNormal, theDist, theOrigin );
-    return true;
   }
 
 #ifndef DISABLE_PLOT2DVIEWER

src/SMESHGUI/SMESHGUI_VTKUtils.h

@@ -206,6 +206,14 @@ SMESHGUI_EXPORT
                                        double theDist,
                                        double theBounds[6],
                                        double theOrigin[3] );
+
+  bool ComputeBounds( std::list<vtkActor*> theActorList,
+                      double theBounds[6]);
+
+  void PositionToDistance( double theBounds[6],
+                           double theDirection[3],
+                           double thePos[3],
+                           double& theDist );
  SMESHGUI_EXPORT
    void RemoveVisualObjectWithActors( const char* theEntry, bool fromAllViews = false );
 };

src/SMESHGUI/SMESH_msg_en.ts

@@ -6548,6 +6548,10 @@ It is impossible to read point coordinates from file</translation>
         <source>CLIP_PLANES</source>
         <translation>Clipping planes</translation>
     </message>
+    <message>
+        <source>IS_OPENGL_CLIPPING</source>
+        <translation>OpenGL clipping</translation>
+    </message>
     <message>
         <source>MESHES_SUBMESHES_GROUPS</source>
         <translation>Meshes, sub-meshes and groups</translation>
@@ -6608,6 +6612,30 @@ It is impossible to read point coordinates from file</translation>
         <source>NO_PLANES</source>
         <translation>No planes</translation>
     </message>
+    <message>
+        <source>ABSOLUTE</source>
+        <translation>Absolute</translation>
+    </message>
+    <message>
+        <source>RELATIVE</source>
+        <translation>Relative</translation>
+    </message>
+    <message>
+        <source>BASE_POINT</source>
+        <translation>Base point</translation>
+    </message>
+    <message>
+        <source>DIRECTION</source>
+        <translation>Direction</translation>
+    </message>
+    <message>
+        <source>RESET</source>
+        <translation>Reset</translation>
+    </message>
+    <message>
+        <source>INVERT</source>
+        <translation>Invert</translation>
+    </message>
 </context>
 <context>
     <name>SMESHGUI_DuplicateNodesDlg</name>

src/SMESHGUI/SMESH_msg_fr.ts

@@ -6486,6 +6486,10 @@ Il y a trop peu de points dans le fichier </translation>
         <source>CLIP_PLANES</source>
         <translation>Plans de découpe</translation>
     </message>
+    <message>
+        <source>IS_OPENGL_CLIPPING</source>
+        <translation>OpenGL découpage</translation>
+    </message>
     <message>
         <source>MESHES_SUBMESHES_GROUPS</source>
         <translation>Maillages, sous-maillages et groupes</translation>
@@ -6546,6 +6550,30 @@ Il y a trop peu de points dans le fichier </translation>
         <source>NO_PLANES</source>
         <translation>Pas de plans</translation>
     </message>
+    <message>
+        <source>ABSOLUTE</source>
+        <translation>Absolute</translation>
+    </message>
+    <message>
+        <source>RELATIVE</source>
+        <translation>Relative</translation>
+    </message>
+    <message>
+        <source>RESET</source>
+        <translation>Réinitialiser</translation>
+    </message>
+    <message>
+        <source>INVERT</source>
+        <translation>Inverser</translation>
+    </message>
+    <message>
+        <source>BASE_POINT</source>
+        <translation>Le point fondamental</translation>
+    </message>
+    <message>
+        <source>DIRECTION</source>
+        <translation>Direction</translation>
+    </message>
 </context>
 <context>
     <name>SMESHGUI_DuplicateNodesDlg</name>