src/SMESHGUI/SMESHGUI_VTKUtils.cxx

   1 // Copyright (C) 2007-2016  CEA/DEN, EDF R&D, OPEN CASCADE
   2 //
   3 // Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
   4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
   5 //
   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, or (at your option) any later version.
  10 //
  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.
  15 //
  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
  19 //
  20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  21 //
  22
  23 // SMESH SMESHGUI : GUI for SMESH component
  24 // File   : SMESHGUI_VTKUtils.cxx
  25 // Author : Open CASCADE S.A.S.
  26 // SMESH includes
  27 //
  28 #include "SMESHGUI_VTKUtils.h"
  29
  30 #include "SMESHGUI.h"
  31 #include "SMESHGUI_Filter.h"
  32 #include "SMESHGUI_Utils.h"
  33 #include "SMDS_Mesh.hxx"
  34 #include "SMESH_Actor.h"
  35 #include "SMESH_ActorUtils.h"
  36 #include "SMESH_CellLabelActor.h"
  37 #include "SMESH_ControlsDef.hxx"
  38 #include "SMESH_NodeLabelActor.h"
  39 #include "SMESH_ObjectDef.h"
  40
  41 // SALOME GUI includes
  42 #include <SUIT_Desktop.h>
  43 #include <SUIT_Session.h>
  44 #include <SUIT_MessageBox.h>
  45 #include <SUIT_ViewManager.h>
  46 #include <SUIT_ResourceMgr.h>
  47
  48 #include <SALOME_ListIO.hxx>
  49
  50 #include <SVTK_Selector.h>
  51 #include <SVTK_ViewModel.h>
  52 #include <SVTK_ViewWindow.h>
  53
  54 #include <VTKViewer_Algorithm.h>
  55
  56 #include <LightApp_SelectionMgr.h>
  57 #include <SalomeApp_Application.h>
  58 #include <SalomeApp_Study.h>
  59
  60 // SALOME KERNEL includes
  61 #include <utilities.h>
  62
  63 // IDL includes
  64 #include <SALOMEconfig.h>
  65 #include CORBA_CLIENT_HEADER(SMESH_Mesh)
  66 #include CORBA_CLIENT_HEADER(SMESH_Group)
  67
  68 // VTK includes
  69 #include <vtkMath.h>
  70 #include <vtkRenderer.h>
  71 #include <vtkActorCollection.h>
  72 #include <vtkUnstructuredGrid.h>
  73
  74 // OCCT includes
  75 #include <Standard_ErrorHandler.hxx>
  76
  77 namespace SMESH
  78 {
  79   typedef std::map<TKeyOfVisualObj,TVisualObjPtr> TVisualObjCont;
  80   static TVisualObjCont VISUAL_OBJ_CONT;
  81
  82   //=============================================================================
  83   /*!
  84    * \brief Allocate some memory at construction and release it at destruction.
  85    * Is used to be able to continue working after mesh generation or visualization
  86    * break due to lack of memory
  87    */
  88   //=============================================================================
  89
  90   struct MemoryReserve
  91   {
  92     char* myBuf;
  93     MemoryReserve(): myBuf( new char[1024*1024*1] ){} // 1M
  94     void Free() { if (myBuf) { delete [] myBuf; myBuf = 0; }}
  95     ~MemoryReserve() { Free(); }
  96   };
  97   static MemoryReserve* theVISU_MemoryReserve = new MemoryReserve;
  98
  99   //================================================================================
 100   /*!
 101    * \brief Remove VisualObj and its actor from all views
 102    */
 103   //================================================================================
 104
 105   void RemoveVisualObjectWithActors( const char* theEntry, bool fromAllViews )
 106   {
 107     SalomeApp_Application* app = dynamic_cast<SalomeApp_Application*>(SUIT_Session::session()->activeApplication());
 108     if(!app)
 109       return;
 110     SalomeApp_Study* aStudy  = dynamic_cast<SalomeApp_Study*>(app->activeStudy());
 111     if(!aStudy)
 112       return;
 113     ViewManagerList aList;
 114
 115     if(fromAllViews) {
 116       app->viewManagers(SVTK_Viewer::Type() , aList);
 117     } else {
 118       SUIT_ViewManager* aVM = app->getViewManager(SVTK_Viewer::Type(), true);
 119       if(aVM)
 120         aList.append(aVM);
 121     }
 122     bool actorRemoved = false;
 123     ViewManagerList::ConstIterator it = aList.begin();
 124     SUIT_ViewManager* aViewManager = 0;
 125     for( ; it!=aList.end();it++) {
 126       aViewManager = *it;
 127       QVector<SUIT_ViewWindow*> views = aViewManager->getViews();
 128       for ( int iV = 0; iV < views.count(); ++iV ) {
 129         if ( SMESH_Actor* actor = FindActorByEntry( views[iV], theEntry)) {
 130           if(SVTK_ViewWindow* vtkWnd = GetVtkViewWindow(views[iV])) {
 131             vtkWnd->RemoveActor(actor);
 132             actorRemoved = true;
 133           }
 134           actor->Delete();
 135         }
 136       }
 137     }
 138
 139     if (aViewManager ) {
 140       int aStudyId = aViewManager->study()->id();
 141       TVisualObjCont::key_type aKey(aStudyId,theEntry);
 142       TVisualObjCont::iterator anIter = VISUAL_OBJ_CONT.find(aKey);
 143       if(anIter != VISUAL_OBJ_CONT.end()) {
 144         // for unknown reason, object destructor is not called, so clear object manually
 145         anIter->second->GetUnstructuredGrid()->SetCells(0,0,0,0,0);
 146         anIter->second->GetUnstructuredGrid()->SetPoints(0);
 147       }
 148       VISUAL_OBJ_CONT.erase(aKey);
 149     }
 150
 151     if(actorRemoved)
 152       aStudy->setVisibilityState(theEntry, Qtx::HiddenState);
 153   }
 154   //================================================================================
 155   /*!
 156    * \brief Remove all VisualObjs and their actors from all views
 157    */
 158   //================================================================================
 159
 160   void RemoveAllObjectsWithActors()
 161   {
 162     SalomeApp_Application* app = dynamic_cast<SalomeApp_Application*>
 163       ( SUIT_Session::session()->activeApplication() );
 164     if (!app) return;
 165     ViewManagerList viewMgrs = app->viewManagers();
 166     for ( int iM = 0; iM < viewMgrs.count(); ++iM ) {
 167       SUIT_ViewManager* aViewManager = viewMgrs.at( iM );
 168       if ( aViewManager && aViewManager->getType() == SVTK_Viewer::Type()) {
 169         QVector<SUIT_ViewWindow*> views = aViewManager->getViews();
 170         for ( int iV = 0; iV < views.count(); ++iV ) {
 171           if(SVTK_ViewWindow* vtkWnd = GetVtkViewWindow(views[iV])) {
 172             vtkRenderer *aRenderer = vtkWnd->getRenderer();
 173             VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 174             vtkActorCollection *actors = aCopy.GetActors();
 175             for (int i = 0; i < actors->GetNumberOfItems(); ++i ) {
 176               // size of actors changes inside the loop
 177               if (SMESH_Actor *actor = dynamic_cast<SMESH_Actor*>(actors->GetItemAsObject(i)))
 178               {
 179                 vtkWnd->RemoveActor(actor);
 180                 actor->Delete();
 181               }
 182             }
 183           }
 184         }
 185       }
 186     }
 187     TVisualObjCont::iterator anIter = VISUAL_OBJ_CONT.begin();
 188     for ( ; anIter != VISUAL_OBJ_CONT.end(); ++anIter ) {
 189       // for unknown reason, object destructor is not called, so clear object manually
 190       anIter->second->GetUnstructuredGrid()->SetCells(0,0,0,0,0);
 191       anIter->second->GetUnstructuredGrid()->SetPoints(0);
 192     }
 193     VISUAL_OBJ_CONT.clear();
 194   }
 195
 196   //================================================================================
 197   /*!
 198    * \brief Remove all VisualObjs of a study
 199    */
 200   //================================================================================
 201
 202   void RemoveVisuData(int studyID)
 203   {
 204     SalomeApp_Application* app = dynamic_cast<SalomeApp_Application*>
 205       ( SUIT_Session::session()->activeApplication() );
 206     if (!app) return;
 207     ViewManagerList viewMgrs = app->viewManagers();
 208     for ( int iM = 0; iM < viewMgrs.count(); ++iM ) {
 209       SUIT_ViewManager* aViewManager = viewMgrs.at( iM );
 210       if ( aViewManager && aViewManager->getType() == SVTK_Viewer::Type() &&
 211            aViewManager->study()->id() == studyID ) {
 212         QVector<SUIT_ViewWindow*> views = aViewManager->getViews();
 213         for ( int iV = 0; iV < views.count(); ++iV ) {
 214           if(SVTK_ViewWindow* vtkWnd = GetVtkViewWindow(views[iV])) {
 215             vtkRenderer *aRenderer = vtkWnd->getRenderer();
 216             VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 217             vtkActorCollection *actors = aCopy.GetActors();
 218             for (int i = 0; i < actors->GetNumberOfItems(); ++i ) {
 219               // size of actors changes inside the loop
 220               if(SMESH_Actor *actor = dynamic_cast<SMESH_Actor*>(actors->GetItemAsObject(i)))
 221               {
 222                 vtkWnd->RemoveActor(actor);
 223                 actor->Delete();
 224               }
 225             }
 226           }
 227         }
 228       }
 229     }
 230     TVisualObjCont::iterator anIter = VISUAL_OBJ_CONT.begin();
 231     for ( ; anIter != VISUAL_OBJ_CONT.end(); ) {
 232       int curId = anIter->first.first;
 233       if ( curId == studyID ) {
 234         // for unknown reason, object destructor is not called, so clear object manually
 235         anIter->second->GetUnstructuredGrid()->SetCells(0,0,0,0,0);
 236         anIter->second->GetUnstructuredGrid()->SetPoints(0);
 237         VISUAL_OBJ_CONT.erase( anIter++ ); // anIter++ returns a copy of self before incrementing
 238       }
 239       else {
 240         anIter++;
 241       }
 242     }
 243   }
 244
 245   //================================================================================
 246   /*!
 247    * \brief Notify the user on problems during visualization
 248    */
 249   //================================================================================
 250
 251   void OnVisuException()
 252   {
 253     try {
 254       OCC_CATCH_SIGNALS;
 255       // PAL16774 (Crash after display of many groups). Salome sometimes crashes just
 256       // after or at showing this message, so we do an additional check of available memory
 257 //       char* buf = new char[100*1024];
 258 //       delete [] buf;
 259       SUIT_MessageBox::warning(SMESHGUI::desktop(), QObject::tr("SMESH_WRN_WARNING"),
 260                                QObject::tr("SMESH_VISU_PROBLEM"));
 261     } catch (...) {
 262       // no more memory at all: last resort
 263       MESSAGE_BEGIN ( "SMESHGUI_VTKUtils::OnVisuException(), exception even at showing a message!!!" <<
 264                       std::endl << "Try to remove all visual data..." );
 265       if (theVISU_MemoryReserve) {
 266         delete theVISU_MemoryReserve;
 267         theVISU_MemoryReserve = 0;
 268       }
 269       RemoveAllObjectsWithActors();
 270       SUIT_MessageBox::warning(SMESHGUI::desktop(), QObject::tr("SMESH_WRN_WARNING"),
 271                                QObject::tr("SMESH_VISU_PROBLEM_CLEAR"));
 272       MESSAGE_END ( "...done" );
 273     }
 274   }
 275   //================================================================================
 276   /*!
 277    * \brief Returns an updated visual object
 278    */
 279   //================================================================================
 280
 281   TVisualObjPtr GetVisualObj(int theStudyId, const char* theEntry, bool nulData){
 282     TVisualObjPtr aVisualObj;
 283     TVisualObjCont::key_type aKey(theStudyId,theEntry);
 284     try{
 285       OCC_CATCH_SIGNALS;
 286       TVisualObjCont::iterator anIter = VISUAL_OBJ_CONT.find(aKey);
 287       if(anIter != VISUAL_OBJ_CONT.end()){
 288         aVisualObj = anIter->second;
 289       }else{
 290         SalomeApp_Application* app =
 291           dynamic_cast<SalomeApp_Application*>( SMESHGUI::activeStudy()->application() );
 292         _PTR(Study) aStudy = SMESHGUI::activeStudy()->studyDS();
 293         _PTR(SObject) aSObj = aStudy->FindObjectID(theEntry);
 294         if(aSObj){
 295           _PTR(GenericAttribute) anAttr;
 296           if(aSObj->FindAttribute(anAttr,"AttributeIOR")){
 297             _PTR(AttributeIOR) anIOR = anAttr;
 298             CORBA::String_var aVal = anIOR->Value().c_str();
 299             CORBA::Object_var anObj = app->orb()->string_to_object( aVal.in() );
 300             if(!CORBA::is_nil(anObj)){
 301               //Try narrow to SMESH_Mesh interface
 302               SMESH::SMESH_Mesh_var aMesh = SMESH::SMESH_Mesh::_narrow(anObj);
 303               if(!aMesh->_is_nil()){
 304                 aVisualObj.reset(new SMESH_MeshObj(aMesh));
 305                 TVisualObjCont::value_type aValue(aKey,aVisualObj);
 306                 VISUAL_OBJ_CONT.insert(aValue);
 307               }
 308               //Try narrow to SMESH_Group interface
 309               SMESH::SMESH_GroupBase_var aGroup = SMESH::SMESH_GroupBase::_narrow(anObj);
 310               if(!aGroup->_is_nil()){
 311                 _PTR(SObject) aFatherSObj = aSObj->GetFather();
 312                 if(!aFatherSObj) return aVisualObj;
 313                 aFatherSObj = aFatherSObj->GetFather();
 314                 if(!aFatherSObj) return aVisualObj;
 315                 CORBA::String_var anEntry = aFatherSObj->GetID().c_str();
 316                 TVisualObjPtr aVisObj = GetVisualObj(theStudyId,anEntry.in());
 317                 if(SMESH_MeshObj* aMeshObj = dynamic_cast<SMESH_MeshObj*>(aVisObj.get())){
 318                   aVisualObj.reset(new SMESH_GroupObj(aGroup,aMeshObj));
 319                   TVisualObjCont::value_type aValue(aKey,aVisualObj);
 320                   VISUAL_OBJ_CONT.insert(aValue);
 321                 }
 322               }
 323               //Try narrow to SMESH_subMesh interface
 324               SMESH::SMESH_subMesh_var aSubMesh = SMESH::SMESH_subMesh::_narrow(anObj);
 325               if(!aSubMesh->_is_nil()){
 326                 _PTR(SObject) aFatherSObj = aSObj->GetFather();
 327                 if(!aFatherSObj) return aVisualObj;
 328                 aFatherSObj = aFatherSObj->GetFather();
 329                 if(!aFatherSObj) return aVisualObj;
 330                 CORBA::String_var anEntry = aFatherSObj->GetID().c_str();
 331                 TVisualObjPtr aVisObj = GetVisualObj(theStudyId,anEntry.in());
 332                 if(SMESH_MeshObj* aMeshObj = dynamic_cast<SMESH_MeshObj*>(aVisObj.get())){
 333                   aVisualObj.reset(new SMESH_subMeshObj(aSubMesh,aMeshObj));
 334                   TVisualObjCont::value_type aValue(aKey,aVisualObj);
 335                   VISUAL_OBJ_CONT.insert(aValue);
 336                 }
 337               }
 338             }
 339           }
 340         }
 341       }
 342     }catch(...){
 343       INFOS("GetMeshObj - There is no SMESH_Mesh object for the SALOMEDS::Strudy and Entry!!!");
 344       return TVisualObjPtr();
 345     }
 346     // Update object
 347     bool objModified = false;
 348     if ( aVisualObj ) {
 349       try {
 350         OCC_CATCH_SIGNALS;
 351         if (nulData)
 352           objModified = aVisualObj->NulData();
 353         else
 354           objModified = aVisualObj->Update();
 355       }
 356       catch (...) {
 357         MESSAGE ( "Exception in SMESHGUI_VTKUtils::GetVisualObj()" );
 358         RemoveVisualObjectWithActors( theEntry ); // remove this object
 359         OnVisuException();
 360         aVisualObj.reset();
 361       }
 362     }
 363
 364     if ( objModified ) {
 365       // PAL16631. Mesurements showed that to show aVisualObj in SHADING(default) mode,
 366       // ~5 times more memory is used than it occupies.
 367       // Warn the user if there is less free memory than 30 sizes of a grid
 368       // TODO: estimate memory usage in other modes and take current mode into account
 369       int freeMB = SMDS_Mesh::CheckMemory(true);
 370       int usedMB = aVisualObj->GetUnstructuredGrid()->GetActualMemorySize() / 1024;
 371       //MESSAGE("SMESHGUI_VTKUtils::GetVisualObj(), freeMB=" << freeMB << ", usedMB=" <<usedMB);
 372       if ( freeMB > 0 && usedMB * 5 > freeMB ) {
 373         bool continu = false;
 374         if ( usedMB * 3 > freeMB )
 375           // don't even try to show
 376           SUIT_MessageBox::warning(SMESHGUI::desktop(), QObject::tr("SMESH_WRN_WARNING"),
 377                                    QObject::tr("SMESH_NO_MESH_VISUALIZATION"));
 378         else
 379           // there is a chance to succeed
 380           continu = SUIT_MessageBox::warning
 381             (SMESHGUI::desktop(),
 382              QObject::tr("SMESH_WRN_WARNING"),
 383              QObject::tr("SMESH_CONTINUE_MESH_VISUALIZATION"),
 384              SUIT_MessageBox::Yes | SUIT_MessageBox::No,
 385              SUIT_MessageBox::Yes ) == SUIT_MessageBox::Yes;
 386         if ( !continu ) {
 387           // remove the corresponding actors from all views
 388           RemoveVisualObjectWithActors( theEntry );
 389           aVisualObj.reset();
 390         }
 391       }
 392     }
 393
 394     return aVisualObj;
 395   }
 396
 397
 398   /*! Return active view window, if it instantiates SVTK_ViewWindow class,
 399    *  overwise find or create corresponding view window, make it active and return it.
 400    *  \note Active VVTK_ViewWindow can be returned, because it inherits SVTK_ViewWindow.
 401    */
 402   SVTK_ViewWindow* GetViewWindow (const SalomeApp_Module* theModule,
 403                                   bool createIfNotFound)
 404   {
 405     SalomeApp_Application* anApp;
 406     if (theModule)
 407       anApp = theModule->getApp();
 408     else
 409       anApp = dynamic_cast<SalomeApp_Application*>
 410         (SUIT_Session::session()->activeApplication());
 411
 412     if (anApp) {
 413       if (SVTK_ViewWindow* aView = dynamic_cast<SVTK_ViewWindow*>(anApp->desktop()->activeWindow()))
 414         return aView;
 415
 416       SUIT_ViewManager* aViewManager =
 417         anApp->getViewManager(SVTK_Viewer::Type(), createIfNotFound);
 418       if (aViewManager) {
 419         if (SUIT_ViewWindow* aViewWindow = aViewManager->getActiveView()) {
 420           if (SVTK_ViewWindow* aView = dynamic_cast<SVTK_ViewWindow*>(aViewWindow)) {
 421             aViewWindow->raise();
 422             aViewWindow->setFocus();
 423             return aView;
 424           }
 425         }
 426       }
 427     }
 428     return NULL;
 429   }
 430
 431   SVTK_ViewWindow* FindVtkViewWindow (SUIT_ViewManager* theMgr,
 432                                       SUIT_ViewWindow * theWindow)
 433   {
 434     if( !theMgr )
 435       return NULL;
 436
 437     QVector<SUIT_ViewWindow*> views = theMgr->getViews();
 438     if( views.contains( theWindow ) )
 439       return GetVtkViewWindow( theWindow );
 440     else
 441       return NULL;
 442   }
 443
 444   SVTK_ViewWindow* GetVtkViewWindow(SUIT_ViewWindow* theWindow){
 445     return dynamic_cast<SVTK_ViewWindow*>(theWindow);
 446   }
 447
 448 /*  SUIT_ViewWindow* GetActiveWindow()
 449   {
 450     SalomeApp_Application* app = dynamic_cast<SalomeApp_Application*>( SUIT_Session::session()->activeApplication() );
 451     if( !app )
 452       return NULL;
 453     SUIT_ViewManager* mgr = app->activeViewManager();
 454     if( mgr )
 455       return mgr->getActiveView();
 456     else
 457       return NULL;
 458   }*/
 459
 460   SVTK_ViewWindow* GetCurrentVtkView(){
 461     return GetVtkViewWindow( GetActiveWindow() );
 462   }
 463
 464
 465   void RepaintCurrentView()
 466   {
 467     if (SVTK_ViewWindow* wnd = GetCurrentVtkView())
 468     {
 469       try {
 470         OCC_CATCH_SIGNALS;
 471         wnd->getRenderer()->Render();
 472         wnd->Repaint(false);
 473       }
 474       catch (...) {
 475         MESSAGE ( "Exception in SMESHGUI_VTKUtils::RepaintCurrentView()" );
 476         OnVisuException();
 477       }
 478     }
 479   }
 480
 481   void RepaintViewWindow(SVTK_ViewWindow* theWindow)
 482   {
 483     try {
 484       OCC_CATCH_SIGNALS;
 485       theWindow->getRenderer()->Render();
 486       theWindow->Repaint();
 487     }
 488     catch (...) {
 489       MESSAGE ( "Exception in SMESHGUI_VTKUtils::RepaintViewWindow(SVTK_ViewWindow*)" );
 490       OnVisuException();
 491     }
 492   }
 493
 494   void RenderViewWindow(SVTK_ViewWindow* theWindow)
 495   {
 496     try {
 497       OCC_CATCH_SIGNALS;
 498       theWindow->getRenderer()->Render();
 499       theWindow->Repaint();
 500     }
 501     catch (...) {
 502       MESSAGE ( "Exception in SMESHGUI_VTKUtils::RenderViewWindow(SVTK_ViewWindow*)" );
 503       OnVisuException();
 504     }
 505   }
 506
 507   void FitAll(){
 508     if(SVTK_ViewWindow* wnd = GetCurrentVtkView() ){
 509       try {
 510         OCC_CATCH_SIGNALS;
 511         wnd->onFitAll();
 512         wnd->Repaint();
 513       }
 514       catch (...) {
 515         MESSAGE ( "Exception in SMESHGUI_VTKUtils::FitAll()" );
 516         OnVisuException();
 517       }
 518     }
 519   }
 520
 521
 522   SMESH_Actor* FindActorByEntry(SUIT_ViewWindow *theWindow,
 523                                 const char* theEntry)
 524   {
 525     if(SVTK_ViewWindow* aViewWindow = GetVtkViewWindow(theWindow)){
 526       vtkRenderer *aRenderer = aViewWindow->getRenderer();
 527       VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 528       vtkActorCollection *aCollection = aCopy.GetActors();
 529       aCollection->InitTraversal();
 530       while(vtkActor *anAct = aCollection->GetNextActor()){
 531         if(SMESH_Actor *anActor = dynamic_cast<SMESH_Actor*>(anAct)){
 532           if(anActor->hasIO()){
 533             Handle(SALOME_InteractiveObject) anIO = anActor->getIO();
 534             if(anIO->hasEntry() && strcmp(anIO->getEntry(),theEntry) == 0){
 535               return anActor;
 536             }
 537           }
 538         }
 539       }
 540     }
 541     return NULL;
 542   }
 543
 544
 545   SMESH_Actor* FindActorByEntry(const char* theEntry){
 546     return FindActorByEntry(GetActiveWindow(),theEntry);
 547   }
 548
 549
 550   SMESH_Actor* FindActorByObject(CORBA::Object_ptr theObject){
 551     SalomeApp_Application* app = dynamic_cast<SalomeApp_Application*>( SUIT_Session::session()->activeApplication() );
 552     if( !app )
 553       return NULL;
 554
 555     if(!CORBA::is_nil(theObject)){
 556       _PTR(Study) aStudy = GetActiveStudyDocument();
 557       CORBA::String_var anIOR = app->orb()->object_to_string( theObject );
 558       _PTR(SObject) aSObject = aStudy->FindObjectIOR(anIOR.in());
 559       if(aSObject){
 560         CORBA::String_var anEntry = aSObject->GetID().c_str();
 561         return FindActorByEntry(anEntry.in());
 562       }
 563     }
 564     return NULL;
 565   }
 566
 567
 568   SMESH_Actor* CreateActor(_PTR(Study) theStudy,
 569                            const char* theEntry,
 570                            int theIsClear)
 571   {
 572     SMESH_Actor *anActor = NULL;
 573     CORBA::Long anId = theStudy->StudyId();
 574     if(TVisualObjPtr aVisualObj = GetVisualObj(anId,theEntry)){
 575       _PTR(SObject) aSObj = theStudy->FindObjectID(theEntry);
 576       if(aSObj){
 577         _PTR(GenericAttribute) anAttr;
 578         if(aSObj->FindAttribute(anAttr,"AttributeName")){
 579           _PTR(AttributeName) aName = anAttr;
 580           std::string aNameVal = aName->Value();
 581           anActor = SMESH_Actor::New(aVisualObj,theEntry,aNameVal.c_str(),theIsClear);
 582         }
 583
 584         SMESH::SMESH_GroupBase_var aGroup = SMESH::SMESH_GroupBase::_narrow( SMESH::SObjectToObject( aSObj ));
 585         if(!CORBA::is_nil(aGroup) && anActor)
 586         {
 587           QColor c;
 588           int deltaF, deltaV;
 589           SMESH::GetColor( "SMESH", "fill_color", c, deltaF, "0,170,255|-100"  );
 590           SMESH::GetColor( "SMESH", "volume_color", c, deltaV, "255,0,170|-100"  );
 591           c = SMESH::GetColor( "SMESH", "default_grp_color", c );
 592           SALOMEDS::Color aColor = aGroup->GetColor();
 593           if( !( aColor.R > 0 || aColor.G > 0 || aColor.B > 0 ))
 594           {
 595             aColor.R = c.redF();
 596             aColor.G = c.greenF();
 597             aColor.B = c.blueF();
 598             aGroup->SetColor( aColor );
 599           }
 600           if( aGroup->GetType() == SMESH::NODE )
 601             anActor->SetNodeColor( aColor.R, aColor.G, aColor.B );
 602           else if( aGroup->GetType() == SMESH::EDGE )
 603             anActor->SetEdgeColor( aColor.R, aColor.G, aColor.B );
 604           else if( aGroup->GetType() == SMESH::ELEM0D )
 605             anActor->Set0DColor( aColor.R, aColor.G, aColor.B );
 606           else if( aGroup->GetType() == SMESH::BALL )
 607             anActor->SetBallColor( aColor.R, aColor.G, aColor.B );
 608           else if( aGroup->GetType() == SMESH::VOLUME )
 609             anActor->SetVolumeColor( aColor.R, aColor.G, aColor.B, deltaV );
 610           else
 611             anActor->SetSufaceColor( aColor.R, aColor.G, aColor.B, deltaF );
 612         }
 613       }
 614     }
 615     //MESSAGE("CreateActor " << anActor);
 616     if( anActor )
 617       if( SMESHGUI* aSMESHGUI = SMESHGUI::GetSMESHGUI() )
 618         aSMESHGUI->addActorAsObserver( anActor );
 619     return anActor;
 620   }
 621
 622
 623   void DisplayActor( SUIT_ViewWindow *theWnd, SMESH_Actor* theActor){
 624     if(SVTK_ViewWindow* vtkWnd = GetVtkViewWindow(theWnd)){
 625       try {
 626         OCC_CATCH_SIGNALS;
 627         //MESSAGE("DisplayActor " << theActor);
 628         vtkWnd->AddActor(theActor);
 629         vtkWnd->Repaint();
 630       }
 631       catch (...) {
 632         MESSAGE ( "Exception in SMESHGUI_VTKUtils::DisplayActor()" );
 633         OnVisuException();
 634       }
 635     }
 636   }
 637
 638
 639   void RemoveActor( SUIT_ViewWindow *theWnd, SMESH_Actor* theActor)
 640   {
 641     if ( SVTK_ViewWindow* vtkWnd = GetVtkViewWindow(theWnd)) {
 642       //MESSAGE("RemoveActor " << theActor);
 643       vtkWnd->RemoveActor(theActor);
 644       if(theActor->hasIO()){
 645         Handle(SALOME_InteractiveObject) anIO = theActor->getIO();
 646         if(anIO->hasEntry()){
 647           std::string anEntry = anIO->getEntry();
 648           SalomeApp_Study* aStudy = dynamic_cast<SalomeApp_Study*>( vtkWnd->getViewManager()->study() );
 649           int aStudyId = aStudy->id();
 650           TVisualObjCont::key_type aKey(aStudyId,anEntry);
 651           VISUAL_OBJ_CONT.erase(aKey);
 652         }
 653       }
 654       theActor->Delete();
 655       vtkWnd->Repaint();
 656     }
 657   }
 658
 659   //================================================================================
 660   /*!
 661    * \brief Return true if there are no SMESH actors in a view
 662    */
 663   //================================================================================
 664
 665   bool noSmeshActors(SUIT_ViewWindow *theWnd)
 666   {
 667     if(SVTK_ViewWindow* aViewWindow = GetVtkViewWindow(theWnd)) {
 668       vtkRenderer *aRenderer = aViewWindow->getRenderer();
 669       VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 670       vtkActorCollection *aCollection = aCopy.GetActors();
 671       aCollection->InitTraversal();
 672       while(vtkActor *anAct = aCollection->GetNextActor())
 673         if(dynamic_cast<SMESH_Actor*>(anAct))
 674           return false;
 675     }
 676     return true;
 677   }
 678
 679   bool UpdateView(SUIT_ViewWindow *theWnd, EDisplaing theAction, const char* theEntry)
 680   {
 681     //MESSAGE("UpdateView");
 682     bool OK = false;
 683     SVTK_ViewWindow* aViewWnd = GetVtkViewWindow(theWnd);
 684     if (!aViewWnd)
 685       return OK;
 686
 687     SVTK_ViewWindow* vtkWnd = GetVtkViewWindow(theWnd);
 688     if (!vtkWnd)
 689       return OK;
 690
 691     SalomeApp_Study* aStudy = dynamic_cast<SalomeApp_Study*>( vtkWnd->getViewManager()->study() );
 692
 693     if (!aStudy)
 694       return OK;
 695
 696     {
 697       OK = true;
 698       vtkRenderer *aRenderer = aViewWnd->getRenderer();
 699       VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 700       vtkActorCollection *aCollection = aCopy.GetActors();
 701       aCollection->InitTraversal();
 702
 703       switch (theAction) {
 704       case eDisplayAll: {
 705         while (vtkActor *anAct = aCollection->GetNextActor()) {
 706           if (SMESH_Actor *anActor = dynamic_cast<SMESH_Actor*>(anAct)) {
 707             //MESSAGE("--- display " << anActor);
 708             anActor->SetVisibility(true);
 709
 710             if(anActor->hasIO()){
 711               Handle(SALOME_InteractiveObject) anIO = anActor->getIO();
 712               if(anIO->hasEntry()){
 713                 aStudy->setVisibilityState(anIO->getEntry(), Qtx::ShownState);
 714               }
 715             }
 716           }
 717         }
 718         break;
 719       }
 720       case eDisplayOnly:
 721       case eEraseAll: {
 722         //MESSAGE("---case eDisplayOnly");
 723         while (vtkActor *anAct = aCollection->GetNextActor()) {
 724           if (SMESH_Actor *anActor = dynamic_cast<SMESH_Actor*>(anAct)) {
 725             //MESSAGE("--- erase " << anActor);
 726             anActor->SetVisibility(false);
 727           }
 728         }
 729         aStudy->setVisibilityStateForAll(Qtx::HiddenState);
 730       }
 731       default: {
 732         if (SMESH_Actor *anActor = FindActorByEntry(theWnd,theEntry)) {
 733           switch (theAction) {
 734             case eDisplay:
 735             case eDisplayOnly:
 736               //MESSAGE("--- display " << anActor);
 737               anActor->Update();
 738               anActor->SetVisibility(true);
 739               if (theAction == eDisplayOnly) aRenderer->ResetCameraClippingRange();
 740               aStudy->setVisibilityState(theEntry, Qtx::ShownState);
 741               break;
 742             case eErase:
 743               //MESSAGE("--- erase " << anActor);
 744               anActor->SetVisibility(false);
 745               aStudy->setVisibilityState(theEntry, Qtx::HiddenState);
 746               break;
 747             default:;
 748           }
 749         } else {
 750           switch (theAction) {
 751           case eDisplay:
 752           case eDisplayOnly:
 753             {
 754               //MESSAGE("---");
 755               SalomeApp_Study* aStudy = dynamic_cast<SalomeApp_Study*>(theWnd->getViewManager()->study());
 756               _PTR(Study) aDocument = aStudy->studyDS();
 757               // Pass non-visual objects (hypotheses, etc.), return true in this case
 758               CORBA::Long anId = aDocument->StudyId();
 759               TVisualObjPtr aVisualObj;
 760               if ( (aVisualObj = GetVisualObj(anId,theEntry)) && aVisualObj->IsValid())
 761               {
 762                 if ((anActor = CreateActor(aDocument,theEntry,true))) {
 763                   bool needFitAll = noSmeshActors(theWnd); // fit for the first object only
 764                   DisplayActor(theWnd,anActor);
 765                   aStudy->setVisibilityState(theEntry, Qtx::ShownState);
 766                   // FitAll(); - PAL16770(Display of a group performs an automatic fit all)
 767                   if (needFitAll) FitAll();
 768                 } else {
 769                   OK = false;
 770                 }
 771               }
 772               break;
 773             }
 774           default:;
 775           }
 776         }
 777       }
 778       }
 779     }
 780     return OK;
 781   }
 782
 783
 784   bool UpdateView(EDisplaing theAction, const char* theEntry) {
 785     //MESSAGE("UpdateView");
 786     SalomeApp_Study* aStudy = dynamic_cast< SalomeApp_Study* >( GetActiveStudy() );
 787     SalomeApp_Application* app = dynamic_cast< SalomeApp_Application* >( aStudy->application() );
 788     if ( SUIT_ViewManager* vm = app->activeViewManager() )
 789     {
 790       SUIT_ViewWindow *aWnd = vm->getActiveView();
 791       return UpdateView(aWnd,theAction,theEntry);
 792     }
 793     return false;
 794   }
 795
 796   void UpdateView(){
 797     if ( SVTK_ViewWindow* aWnd = SMESH::GetCurrentVtkView()) {
 798       LightApp_SelectionMgr* mgr = SMESHGUI::selectionMgr();
 799       SALOME_ListIO selected; mgr->selectedObjects( selected );
 800
 801       if( selected.Extent() == 0){
 802         vtkRenderer* aRenderer = aWnd->getRenderer();
 803         VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 804         vtkActorCollection *aCollection = aCopy.GetActors();
 805         aCollection->InitTraversal();
 806         while(vtkActor *anAct = aCollection->GetNextActor()){
 807           if(SMESH_Actor *anActor = dynamic_cast<SMESH_Actor*>(anAct)){
 808             if(anActor->hasIO())
 809               if (!Update(anActor->getIO(),anActor->GetVisibility()))
 810                 break; // avoid multiple warinings if visu failed
 811           }
 812         }
 813       }else{
 814         SALOME_ListIteratorOfListIO anIter( selected );
 815         for( ; anIter.More(); anIter.Next()){
 816           Handle(SALOME_InteractiveObject) anIO = anIter.Value();
 817           if ( !Update(anIO,true) )
 818             break; // avoid multiple warinings if visu failed
 819         }
 820       }
 821       RepaintCurrentView();
 822     }
 823   }
 824
 825
 826   bool Update(const Handle(SALOME_InteractiveObject)& theIO, bool theDisplay)
 827   {
 828     //MESSAGE("Update");
 829     _PTR(Study) aStudy = GetActiveStudyDocument();
 830     CORBA::Long anId = aStudy->StudyId();
 831     if ( TVisualObjPtr aVisualObj = SMESH::GetVisualObj(anId,theIO->getEntry())) {
 832       if ( theDisplay )
 833         UpdateView(SMESH::eDisplay,theIO->getEntry());
 834       return true;
 835     }
 836     return false;
 837   }
 838
 839   bool UpdateNulData(const Handle(SALOME_InteractiveObject)& theIO, bool theDisplay)
 840   {
 841     //MESSAGE("UpdateNulData");
 842     _PTR(Study) aStudy = GetActiveStudyDocument();
 843     CORBA::Long anId = aStudy->StudyId();
 844     if ( TVisualObjPtr aVisualObj = SMESH::GetVisualObj(anId,theIO->getEntry(), true)) {
 845       if ( theDisplay )
 846         UpdateView(SMESH::eDisplay,theIO->getEntry());
 847       return true;
 848     }
 849     return false;
 850   }
 851
 852   void UpdateSelectionProp( SMESHGUI* theModule )
 853   {
 854     if( !theModule )
 855       return;
 856
 857     SalomeApp_Application* app = dynamic_cast< SalomeApp_Application* >( theModule->application() );
 858     if( !app )
 859     {
 860       MESSAGE( "UpdateSelectionProp: Application is null" );
 861       return;
 862     }
 863
 864     SUIT_ViewManager* vm = app->activeViewManager();
 865     if( !vm )
 866     {
 867       MESSAGE( "UpdateSelectionProp: View manager is null" );
 868       return;
 869     }
 870
 871     QVector<SUIT_ViewWindow*> views = vm->getViews();
 872
 873     SUIT_ResourceMgr* mgr = SMESH::GetResourceMgr( theModule );
 874     if( !mgr )
 875     {
 876       MESSAGE( "UpdateSelectionProp: Resource manager is null" );
 877       return;
 878     }
 879
 880     QColor
 881       aHiColor = mgr->colorValue( "SMESH", "selection_object_color", Qt::white ),
 882       aSelColor = mgr->colorValue( "SMESH", "selection_element_color", Qt::yellow ),
 883       aPreColor = mgr->colorValue( "SMESH", "highlight_color", Qt::cyan );
 884
 885     int aElem0DSize = mgr->integerValue("SMESH", "elem0d_size", 5);
 886     // int aBallSize   = mgr->integerValue("SMESH", "ball_elem_size", 5);
 887     int aLineWidth  = mgr->integerValue("SMESH", "element_width", 1);
 888     int maxSize = aElem0DSize;
 889     if (aElem0DSize > maxSize) maxSize = aElem0DSize;
 890     if (aLineWidth > maxSize) maxSize = aLineWidth;
 891     //  if (aBallSize > maxSize) maxSize = aBallSize;
 892
 893     double
 894       SP1 = mgr->doubleValue( "SMESH", "selection_precision_node", 0.025 ),
 895       SP2 = mgr->doubleValue( "SMESH", "selection_precision_element", 0.001 ),
 896       SP3 = mgr->doubleValue( "SMESH", "selection_precision_object", 0.025 );
 897
 898     for ( int i=0, n=views.count(); i<n; i++ )
 899     {
 900       // update VTK viewer properties
 901       if ( SVTK_ViewWindow* aVtkView = GetVtkViewWindow( views[i] ))
 902       {
 903         // mesh element selection
 904         aVtkView->SetSelectionProp(aSelColor.red()/255.,
 905                                    aSelColor.green()/255.,
 906                                    aSelColor.blue()/255.);
 907         // tolerances
 908         aVtkView->SetSelectionTolerance(SP1, SP2, SP3);
 909
 910         // pre-selection
 911         aVtkView->SetPreselectionProp(aPreColor.red()/255.,
 912                                       aPreColor.green()/255.,
 913                                       aPreColor.blue()/255.);
 914         // update actors
 915         vtkRenderer* aRenderer = aVtkView->getRenderer();
 916         VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
 917         vtkActorCollection *aCollection = aCopy.GetActors();
 918         aCollection->InitTraversal();
 919         while ( vtkActor *anAct = aCollection->GetNextActor() ) {
 920           if ( SMESH_Actor *anActor = dynamic_cast<SMESH_Actor*>(anAct) ) {
 921             anActor->SetHighlightColor(aHiColor.red()/255.,
 922                                        aHiColor.green()/255.,
 923                                        aHiColor.blue()/255.);
 924             anActor->SetPreHighlightColor(aPreColor.red()/255.,
 925                                           aPreColor.green()/255.,
 926                                           aPreColor.blue()/255.);
 927           }
 928         }
 929       }
 930     }
 931   }
 932
 933
 934   void UpdateFontProp( SMESHGUI* theModule )
 935   {
 936     if ( !theModule ) return;
 937
 938     SalomeApp_Application* app = dynamic_cast< SalomeApp_Application* >( theModule->application() );
 939     if ( !app ) return;
 940
 941     SUIT_ResourceMgr* mgr = SMESH::GetResourceMgr( theModule );
 942     if ( !mgr ) return;
 943     //
 944     double anRGBNd[3] = {1,1,1};
 945     SMESH::GetColor( "SMESH", "numbering_node_color", anRGBNd[0], anRGBNd[1], anRGBNd[2], QColor( 255, 255, 255 ) );
 946     int aSizeNd = 10;
 947     SMESH::LabelFont aFamilyNd = SMESH::FntTimes;
 948     bool aBoldNd    = true;
 949     bool anItalicNd = false;
 950     bool aShadowNd  = false;
 951
 952     if ( mgr->hasValue( "SMESH", "numbering_node_font" ) ) {
 953       QFont f = mgr->fontValue( "SMESH", "numbering_node_font" );
 954       if ( f.family()      == "Arial" )   aFamilyNd = SMESH::FntArial;
 955       else if ( f.family() == "Courier" ) aFamilyNd = SMESH::FntCourier;
 956       else if ( f.family() == "Times" )   aFamilyNd = SMESH::FntTimes;
 957       aBoldNd    = f.bold();
 958       anItalicNd = f.italic();
 959       aShadowNd  = f.overline();
 960       aSizeNd    = f.pointSize();
 961     }
 962     //
 963     double anRGBEl[3] = {0,1,0};
 964     SMESH::GetColor( "SMESH", "numbering_elem_color", anRGBEl[0], anRGBEl[1], anRGBEl[2], QColor( 0, 255, 0 ) );
 965     int aSizeEl = 12;
 966     SMESH::LabelFont aFamilyEl = SMESH::FntTimes;
 967     bool aBoldEl    = true;
 968     bool anItalicEl = false;
 969     bool aShadowEl  = false;
 970
 971     if ( mgr->hasValue( "SMESH", "numbering_elem_font" ) ) {
 972       QFont f = mgr->fontValue( "SMESH", "numbering_elem_font" );
 973
 974       if ( f.family()      == "Arial" )   aFamilyEl = SMESH::FntArial;
 975       else if ( f.family() == "Courier" ) aFamilyEl = SMESH::FntCourier;
 976       else if ( f.family() == "Times" )   aFamilyEl = SMESH::FntTimes;
 977       aBoldEl    = f.bold();
 978       anItalicEl = f.italic();
 979       aShadowEl  = f.overline();
 980       aSizeEl    = f.pointSize();
 981     }
 982     //
 983     ViewManagerList vmList;
 984     app->viewManagers( SVTK_Viewer::Type(), vmList );
 985     foreach ( SUIT_ViewManager* vm, vmList ) {
 986       QVector<SUIT_ViewWindow*> views = vm->getViews();
 987       foreach ( SUIT_ViewWindow* vw, views ) {
 988         // update VTK viewer properties
 989         if ( SVTK_ViewWindow* aVtkView = GetVtkViewWindow( vw ) ) {
 990           // update actors
 991           vtkRenderer* aRenderer = aVtkView->getRenderer();
 992           VTK::ActorCollectionCopy aCopy( aRenderer->GetActors() );
 993           vtkActorCollection* aCollection = aCopy.GetActors();
 994           aCollection->InitTraversal();
 995           while ( vtkActor* anAct = aCollection->GetNextActor() ) {
 996             if ( SMESH_NodeLabelActor* anActor = dynamic_cast< SMESH_NodeLabelActor* >( anAct ) ) {
 997               anActor->SetFontProperties( aFamilyNd, aSizeNd, aBoldNd, anItalicNd, aShadowNd, anRGBNd[0], anRGBNd[1], anRGBNd[2] );
 998             }
 999             else if ( SMESH_CellLabelActor* anActor = dynamic_cast< SMESH_CellLabelActor* >( anAct ) ) {
1000               anActor->SetFontProperties( aFamilyEl, aSizeEl, aBoldEl, anItalicEl, aShadowEl, anRGBEl[0], anRGBEl[1], anRGBEl[2] );
1001             }
1002           }
1003           aVtkView->Repaint( false );
1004         }
1005       }
1006     }
1007   }
1008
1009   //----------------------------------------------------------------------------
1010   SVTK_Selector*
1011   GetSelector(SUIT_ViewWindow *theWindow)
1012   {
1013     if(SVTK_ViewWindow* aWnd = GetVtkViewWindow(theWindow))
1014       return aWnd->GetSelector();
1015
1016     return NULL;
1017   }
1018
1019   void SetFilter(const Handle(VTKViewer_Filter)& theFilter,
1020                  SVTK_Selector* theSelector)
1021   {
1022     if (theSelector)
1023       theSelector->SetFilter(theFilter);
1024   }
1025
1026   Handle(VTKViewer_Filter) GetFilter(int theId, SVTK_Selector* theSelector)
1027   {
1028     return theSelector->GetFilter(theId);
1029   }
1030
1031   bool IsFilterPresent(int theId, SVTK_Selector* theSelector)
1032   {
1033     return theSelector->IsFilterPresent(theId);
1034   }
1035
1036   void RemoveFilter(int theId, SVTK_Selector* theSelector)
1037   {
1038     theSelector->RemoveFilter(theId);
1039   }
1040
1041   void RemoveFilters(SVTK_Selector* theSelector)
1042   {
1043     for ( int id = SMESH::NodeFilter; theSelector && id < SMESH::LastFilter; id++ )
1044       theSelector->RemoveFilter( id );
1045   }
1046
1047   bool IsValid(SALOME_Actor* theActor, int theCellId,
1048                SVTK_Selector* theSelector)
1049   {
1050     return theSelector->IsValid(theActor,theCellId);
1051   }
1052
1053
1054   //----------------------------------------------------------------------------
1055   void SetPointRepresentation(bool theIsVisible)
1056   {
1057     if ( SVTK_ViewWindow* aViewWindow = GetCurrentVtkView() ) {
1058       vtkRenderer *aRenderer = aViewWindow->getRenderer();
1059       VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
1060       vtkActorCollection *aCollection = aCopy.GetActors();
1061       aCollection->InitTraversal();
1062       while(vtkActor *anAct = aCollection->GetNextActor()){
1063         if(SMESH_Actor *anActor = dynamic_cast<SMESH_Actor*>(anAct)){
1064           if(anActor->GetVisibility()){
1065             anActor->SetPointRepresentation(theIsVisible);
1066           }
1067         }
1068       }
1069       RepaintCurrentView();
1070     }
1071   }
1072
1073
1074   void SetPickable(SMESH_Actor* theActor)
1075   {
1076     if ( SVTK_ViewWindow* aWnd = GetCurrentVtkView() ) {
1077       int anIsAllPickable = (theActor == NULL);
1078       vtkRenderer *aRenderer = aWnd->getRenderer();
1079       VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
1080       vtkActorCollection *aCollection = aCopy.GetActors();
1081       aCollection->InitTraversal();
1082       while(vtkActor *anAct = aCollection->GetNextActor()){
1083         if(SALOME_Actor *anActor = dynamic_cast<SALOME_Actor*>(anAct)){
1084           if(anActor->GetVisibility()){
1085             anActor->SetPickable(anIsAllPickable);
1086           }
1087         }
1088       }
1089       if(theActor)
1090         theActor->SetPickable(!anIsAllPickable);
1091       RepaintCurrentView();
1092     }
1093   }
1094
1095
1096   //----------------------------------------------------------------------------
1097   int GetNameOfSelectedNodes(SVTK_Selector*                          theSelector,
1098                              const Handle(SALOME_InteractiveObject)& theIO,
1099                              QString&                                theName)
1100   {
1101     theName = "";
1102     TColStd_IndexedMapOfInteger aMapIndex;
1103     theSelector->GetIndex(theIO,aMapIndex);
1104
1105     for(int i = 1; i <= aMapIndex.Extent(); i++)
1106       theName += QString(" %1").arg(aMapIndex(i));
1107
1108     return aMapIndex.Extent();
1109   }
1110
1111   int GetNameOfSelectedElements(SVTK_Selector* theSelector,
1112                                 const Handle(SALOME_InteractiveObject)& theIO,
1113                                 QString& theName)
1114   {
1115     theName = "";
1116     TColStd_IndexedMapOfInteger aMapIndex;
1117     theSelector->GetIndex(theIO,aMapIndex);
1118
1119     typedef std::set<int> TIdContainer;
1120     TIdContainer anIdContainer;
1121     for( int i = 1; i <= aMapIndex.Extent(); i++)
1122       anIdContainer.insert(aMapIndex(i));
1123
1124     TIdContainer::const_iterator anIter = anIdContainer.begin();
1125     for( ; anIter != anIdContainer.end(); anIter++)
1126       theName += QString(" %1").arg(*anIter);
1127
1128     return aMapIndex.Extent();
1129   }
1130
1131
1132   int GetEdgeNodes(SVTK_Selector* theSelector,
1133                    const TVisualObjPtr& theVisualObject,
1134                    int& theId1,
1135                    int& theId2)
1136   {
1137     const SALOME_ListIO& selected = theSelector->StoredIObjects();
1138
1139     if ( selected.Extent() != 1 )
1140       return -1;
1141
1142     Handle(SALOME_InteractiveObject) anIO = selected.First();
1143     if ( anIO.IsNull() || !anIO->hasEntry() )
1144       return -1;
1145
1146     TColStd_IndexedMapOfInteger aMapIndex;
1147     theSelector->GetIndex( anIO, aMapIndex );
1148     if ( aMapIndex.Extent() != 2 )
1149       return -1;
1150
1151     int anObjId = -1, anEdgeNum = -1;
1152     for ( int i = 1; i <= aMapIndex.Extent(); i++ ) {
1153       int aVal = aMapIndex( i );
1154       if ( aVal > 0 )
1155         anObjId = aVal;
1156       else
1157         anEdgeNum = abs( aVal ) - 1;
1158     }
1159
1160     if ( anObjId == -1 || anEdgeNum == -1 )
1161       return -1;
1162
1163     return theVisualObject->GetEdgeNodes( anObjId, anEdgeNum, theId1, theId2 ) ? 1 : -1;
1164   }
1165
1166   //----------------------------------------------------------------------------
1167   int GetNameOfSelectedNodes(LightApp_SelectionMgr *theMgr,
1168                              const Handle(SALOME_InteractiveObject)& theIO,
1169                              QString& theName)
1170   {
1171     theName = "";
1172     if(theIO->hasEntry()){
1173       if(FindActorByEntry(theIO->getEntry())){
1174         TColStd_IndexedMapOfInteger aMapIndex;
1175         theMgr->GetIndexes(theIO,aMapIndex);
1176         for(int i = 1; i <= aMapIndex.Extent(); i++){
1177           theName += QString(" %1").arg(aMapIndex(i));
1178         }
1179         return aMapIndex.Extent();
1180       }
1181     }
1182     return -1;
1183   }
1184
1185   int GetNameOfSelectedNodes(LightApp_SelectionMgr *theMgr, QString& theName)
1186   {
1187     theName = "";
1188     SALOME_ListIO selected; theMgr->selectedObjects( selected );
1189     if(selected.Extent() == 1){
1190       Handle(SALOME_InteractiveObject) anIO = selected.First();
1191       return GetNameOfSelectedNodes(theMgr,anIO,theName);
1192     }
1193     return -1;
1194   }
1195
1196
1197   int GetNameOfSelectedElements(LightApp_SelectionMgr *                 theMgr,
1198                                 const Handle(SALOME_InteractiveObject)& theIO,
1199                                 QString&                                theName)
1200   {
1201     theName = "";
1202     if(theIO->hasEntry()){
1203       if(FindActorByEntry(theIO->getEntry())){
1204         TColStd_IndexedMapOfInteger aMapIndex;
1205         theMgr->GetIndexes(theIO,aMapIndex);
1206         typedef std::set<int> TIdContainer;
1207         TIdContainer anIdContainer;
1208         for( int i = 1; i <= aMapIndex.Extent(); i++)
1209           anIdContainer.insert(aMapIndex(i));
1210         TIdContainer::const_iterator anIter = anIdContainer.begin();
1211         for( ; anIter != anIdContainer.end(); anIter++){
1212           theName += QString(" %1").arg(*anIter);
1213         }
1214         return aMapIndex.Extent();
1215       }
1216     }
1217     return -1;
1218   }
1219
1220
1221   int GetNameOfSelectedElements(LightApp_SelectionMgr *theMgr, QString& theName)
1222   {
1223     theName = "";
1224     SALOME_ListIO selected; theMgr->selectedObjects( selected );
1225
1226     if( selected.Extent() == 1){
1227       Handle(SALOME_InteractiveObject) anIO = selected.First();
1228       return GetNameOfSelectedElements(theMgr,anIO,theName);
1229     }
1230     return -1;
1231   }
1232
1233   int GetSelected(LightApp_SelectionMgr*       theMgr,
1234                   TColStd_IndexedMapOfInteger& theMap,
1235                   const bool                   theIsElement)
1236   {
1237     theMap.Clear();
1238     SALOME_ListIO selected; theMgr->selectedObjects( selected );
1239
1240     if ( selected.Extent() == 1 )
1241     {
1242       Handle(SALOME_InteractiveObject) anIO = selected.First();
1243       if ( anIO->hasEntry() ) {
1244         theMgr->GetIndexes( anIO, theMap );
1245       }
1246     }
1247     return theMap.Extent();
1248   }
1249
1250
1251   int GetEdgeNodes( LightApp_SelectionMgr* theMgr, int& theId1, int& theId2 )
1252   {
1253     SALOME_ListIO selected; theMgr->selectedObjects( selected );
1254
1255     if ( selected.Extent() != 1 )
1256       return -1;
1257
1258     Handle(SALOME_InteractiveObject) anIO = selected.First();
1259     if ( anIO.IsNull() || !anIO->hasEntry() )
1260       return -1;
1261
1262     SMESH_Actor *anActor = SMESH::FindActorByEntry( anIO->getEntry() );
1263     if ( anActor == 0 )
1264       return -1;
1265
1266     TColStd_IndexedMapOfInteger aMapIndex;
1267     theMgr->GetIndexes( anIO, aMapIndex );
1268     if ( aMapIndex.Extent() != 2 )
1269       return -1;
1270
1271     int anObjId = -1, anEdgeNum = -1;
1272     for ( int i = 1; i <= aMapIndex.Extent(); i++ ) {
1273       int aVal = aMapIndex( i );
1274       if ( aVal > 0 )
1275         anObjId = aVal;
1276       else
1277         anEdgeNum = abs( aVal );
1278     }
1279
1280     if ( anObjId == -1 || anEdgeNum == -1 )
1281       return -1;
1282
1283     return anActor->GetObject()->GetEdgeNodes( anObjId, anEdgeNum, theId1, theId2 ) ? 1 : -1;
1284   }
1285
1286   void SetControlsPrecision( const long theVal )
1287   {
1288     if( SVTK_ViewWindow* aWnd = SMESH::GetCurrentVtkView() )
1289     {
1290       vtkRenderer *aRenderer = aWnd->getRenderer();
1291       VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
1292       vtkActorCollection *aCollection = aCopy.GetActors();
1293       aCollection->InitTraversal();
1294
1295       while ( vtkActor *anAct = aCollection->GetNextActor())
1296       {
1297         if ( SMESH_Actor *anActor = dynamic_cast<SMESH_Actor*>( anAct ) )
1298         {
1299           anActor->SetControlsPrecision( theVal );
1300           anActor->SetControlMode( anActor->GetControlMode() );
1301         }
1302       }
1303
1304     }
1305   }
1306
1307   //----------------------------------------------------------------------------
1308   // internal function
1309   void ComputeBoundsParam( double theBounds[6],
1310                            double theDirection[3],
1311                            double theMinPnt[3],
1312                            double& theMaxBoundPrj,
1313                            double& theMinBoundPrj )
1314   {
1315     //Enlarge bounds in order to avoid conflicts of precision
1316     for(int i = 0; i < 6; i += 2){
1317       static double EPS = 1.0E-3;
1318       double aDelta = (theBounds[i+1] - theBounds[i])*EPS;
1319       theBounds[i] -= aDelta;
1320       theBounds[i+1] += aDelta;
1321     }
1322
1323     double aBoundPoints[8][3] = { {theBounds[0],theBounds[2],theBounds[4]},
1324                                   {theBounds[1],theBounds[2],theBounds[4]},
1325                                   {theBounds[0],theBounds[3],theBounds[4]},
1326                                   {theBounds[1],theBounds[3],theBounds[4]},
1327                                   {theBounds[0],theBounds[2],theBounds[5]},
1328                                   {theBounds[1],theBounds[2],theBounds[5]},
1329                                   {theBounds[0],theBounds[3],theBounds[5]},
1330                                   {theBounds[1],theBounds[3],theBounds[5]}};
1331
1332     int aMaxId = 0;
1333     theMaxBoundPrj = vtkMath::Dot(theDirection,aBoundPoints[aMaxId]);
1334     theMinBoundPrj = theMaxBoundPrj;
1335     for(int i = 1; i < 8; i++){
1336       double aTmp = vtkMath::Dot(theDirection,aBoundPoints[i]);
1337       if(theMaxBoundPrj < aTmp){
1338         theMaxBoundPrj = aTmp;
1339         aMaxId = i;
1340       }
1341       if(theMinBoundPrj > aTmp){
1342         theMinBoundPrj = aTmp;
1343       }
1344     }
1345     double *aMinPnt = aBoundPoints[aMaxId];
1346     theMinPnt[0] = aMinPnt[0];
1347     theMinPnt[1] = aMinPnt[1];
1348     theMinPnt[2] = aMinPnt[2];
1349   }
1350
1351   // internal function
1352   void DistanceToPosition( double theBounds[6],
1353                            double theDirection[3],
1354                            double theDist,
1355                            double thePos[3] )
1356   {
1357     double aMaxBoundPrj, aMinBoundPrj, aMinPnt[3];
1358     ComputeBoundsParam(theBounds,theDirection,aMinPnt,aMaxBoundPrj,aMinBoundPrj);
1359     double aLength = (aMaxBoundPrj-aMinBoundPrj)*theDist;
1360     thePos[0] = aMinPnt[0]-theDirection[0]*aLength;
1361     thePos[1] = aMinPnt[1]-theDirection[1]*aLength;
1362     thePos[2] = aMinPnt[2]-theDirection[2]*aLength;
1363   }
1364
1365   // internal function (currently unused, left just in case)
1366   void PositionToDistance( double theBounds[6],
1367                            double theDirection[3],
1368                            double thePos[3],
1369                            double& theDist )
1370   {
1371     double aMaxBoundPrj, aMinBoundPrj, aMinPnt[3];
1372     ComputeBoundsParam(theBounds,theDirection,aMinPnt,aMaxBoundPrj,aMinBoundPrj);
1373     double aPrj = vtkMath::Dot(theDirection,thePos);
1374     theDist = (aPrj-aMinBoundPrj)/(aMaxBoundPrj-aMinBoundPrj);
1375   }
1376
1377   bool ComputeClippingPlaneParameters( std::list<vtkActor*> theActorList,
1378                                        double theNormal[3],
1379                                        double theDist,
1380                                        double theBounds[6],
1381                                        double theOrigin[3] )
1382   {
1383     bool anIsOk = false;
1384     anIsOk = ComputeBounds( theActorList, theBounds );
1385
1386
1387     if( !anIsOk )
1388       return false;
1389
1390     DistanceToPosition( theBounds, theNormal, theDist, theOrigin );
1391     return true;
1392   }
1393
1394   bool ComputeBounds( std::list<vtkActor*> theActorList,
1395                       double theBounds[6])
1396   {
1397     bool anIsOk = false;
1398     theBounds[0] = theBounds[2] = theBounds[4] = VTK_DOUBLE_MAX;
1399     theBounds[1] = theBounds[3] = theBounds[5] = -VTK_DOUBLE_MAX;
1400     std::list<vtkActor*>::iterator anIter = theActorList.begin();
1401     for( ; anIter != theActorList.end(); anIter++ ) {
1402       if( vtkActor* aVTKActor = *anIter ) {
1403         if( SMESH_Actor* anActor = SMESH_Actor::SafeDownCast( aVTKActor ) ) {
1404           double aBounds[6];
1405           anActor->GetUnstructuredGrid()->GetBounds( aBounds );
1406           theBounds[0] = std::min( theBounds[0], aBounds[0] );
1407           theBounds[1] = std::max( theBounds[1], aBounds[1] );
1408           theBounds[2] = std::min( theBounds[2], aBounds[2] );
1409           theBounds[3] = std::max( theBounds[3], aBounds[3] );
1410           theBounds[4] = std::min( theBounds[4], aBounds[4] );
1411           theBounds[5] = std::max( theBounds[5], aBounds[5] );
1412           anIsOk = true;
1413         }
1414       }
1415     }
1416     return anIsOk;
1417   }
1418
1419 #ifndef DISABLE_PLOT2DVIEWER
1420   //================================================================================
1421   /*!
1422    * \brief Find all SMESH_Actor's in the View Window.
1423    * If actor constains Plot2d_Histogram object remove it from each Plot2d Viewer.
1424    */
1425   //================================================================================
1426
1427   void ClearPlot2Viewers( SUIT_ViewWindow* theWindow )
1428   {
1429     if ( SVTK_ViewWindow* aViewWindow = GetVtkViewWindow(theWindow) ) {
1430       vtkRenderer *aRenderer = aViewWindow->getRenderer();
1431       VTK::ActorCollectionCopy aCopy(aRenderer->GetActors());
1432       vtkActorCollection *aCollection = aCopy.GetActors();
1433       aCollection->InitTraversal();
1434       while(vtkActor *anAct = aCollection->GetNextActor()){
1435         if(SMESH_Actor *anActor = dynamic_cast<SMESH_Actor*>(anAct)){
1436           if(anActor->hasIO() && anActor->GetPlot2Histogram() ){
1437             ProcessIn2DViewers(anActor,RemoveFrom2dViewer);
1438           }
1439         }
1440       }
1441     }
1442   }
1443
1444 #endif
1445
1446 } // end of namespace SMESH