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