src/SVTK/SVTK_InteractorStyle.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 //  SALOME VTKViewer : build VTK viewer into Salome desktop
  24 //  File   :
  25 //  Author :
  26
  27 #include "SVTK_InteractorStyle.h"
  28
  29 #include "VTKViewer_Algorithm.h"
  30 #include "VTKViewer_Utilities.h"
  31 #include "SVTK_GenericRenderWindowInteractor.h"
  32
  33 #include "SVTK_Selection.h"
  34 #include "SVTK_Event.h"
  35 #include "SVTK_Selector.h"
  36 #include "SVTK_Functor.h"
  37 #include "SVTK_Actor.h"
  38
  39 #include "VTKViewer_Algorithm.h"
  40 #include "SVTK_Functor.h"
  41
  42 #include "SUIT_Tools.h"
  43 #include "SALOME_Actor.h"
  44
  45 #include <vtkObjectFactory.h>
  46 #include <vtkMath.h>
  47 #include <vtkCommand.h>
  48 #include <vtkCamera.h>
  49 #include <vtkRenderer.h>
  50 #include <vtkPointPicker.h>
  51 #include <vtkCellPicker.h>
  52 #include <vtkRenderWindow.h>
  53 #include <vtkRenderWindowInteractor.h>
  54 #include <vtkCallbackCommand.h>
  55 #include <vtkRendererCollection.h>
  56 #include <vtkDataSet.h>
  57 #include <vtkPerspectiveTransform.h>
  58 #include <vtkMatrix4x4.h>
  59
  60 #include <QtxRubberBand.h>
  61
  62 #include <QPixmap>
  63 #include <QWidget>
  64 #include <QPolygon>
  65
  66 #include <algorithm>
  67 #include <iostream>
  68
  69 namespace
  70 {
  71   inline void GetEventPosition(vtkRenderWindowInteractor* theInteractor,
  72                                int& theX,
  73                                int& theY)
  74   {
  75     theInteractor->GetEventPosition(theX,theY);
  76     theY = theInteractor->GetSize()[1] - theY - 1;
  77   }
  78 }
  79
  80
  81 vtkStandardNewMacro(SVTK_InteractorStyle);
  82
  83
  84 /*!
  85   Constructor
  86 */
  87 SVTK_InteractorStyle::SVTK_InteractorStyle():
  88   mySelectionEvent(new SVTK_SelectionEvent()),
  89   myPointPicker(vtkPointPicker::New()),
  90   myLastHighlitedActor(NULL),
  91   myLastPreHighlitedActor(NULL),
  92   myControllerIncrement(SVTK_ControllerIncrement::New()),
  93   myControllerOnKeyDown(SVTK_ControllerOnKeyDown::New()),
  94   myHighlightSelectionPointActor(SVTK_Actor::New()),
  95   myRectBand(0),
  96   myPolygonBand(0),
  97   myIsAdvancedZoomingEnabled(false),
  98   myPoligonState( Disable )
  99 {
 100   myPointPicker->Delete();
 101
 102   myPointPicker->SetTolerance(0.025);
 103
 104   this->MotionFactor = 10.0;
 105   this->State = VTK_INTERACTOR_STYLE_CAMERA_NONE;
 106   this->RadianToDegree = 180.0 / vtkMath::Pi();
 107   this->ForcedState = VTK_INTERACTOR_STYLE_CAMERA_NONE;
 108
 109   loadCursors();
 110
 111   // set custom event handling function (to handle 3d space mouse events)
 112   EventCallbackCommand->SetCallback( SVTK_InteractorStyle::ProcessEvents );
 113
 114   // set default values of properties.  user may edit them in preferences.
 115   mySMDecreaseSpeedBtn = 1;
 116   mySMIncreaseSpeedBtn = 2;
 117   mySMDominantCombinedSwitchBtn = 9;
 118   //
 119   myControllerIncrement->Delete();
 120   myControllerOnKeyDown->Delete();
 121
 122   myCurrRotationPointType = SVTK::SetRotateGravity;
 123   myPrevRotationPointType = myCurrRotationPointType;
 124
 125   myCurrFocalPointType = SVTK::SetFocalPointSelected;
 126   myPrevFocalPointType = myCurrFocalPointType;
 127
 128   myHighlightSelectionPointActor->Delete();
 129   myHighlightSelectionPointActor->Initialize();
 130   myHighlightSelectionPointActor->PickableOff();
 131   myHighlightSelectionPointActor->SetVisibility( false );
 132
 133   myHighlightSelectionPointActor->GetProperty()->SetPointSize(SALOME_POINT_SIZE+2);
 134   myHighlightSelectionPointActor->GetProperty()->SetLineWidth(SALOME_LINE_WIDTH+2);
 135   myHighlightSelectionPointActor->GetProperty()->SetRepresentationToPoints();
 136
 137   myBBFirstCheck = true;
 138 }
 139
 140 /*!
 141   Destructor
 142 */
 143 SVTK_InteractorStyle::~SVTK_InteractorStyle()
 144 {
 145   endDrawRect();
 146   endDrawPolygon();
 147 }
 148
 149 /*!
 150   \return widget for rendering
 151 */
 152 QWidget* SVTK_InteractorStyle::GetRenderWidget()
 153 {
 154   return myInteractor->GetRenderWidget();
 155 }
 156
 157 /*!
 158   \return selector
 159 */
 160 SVTK_Selector* SVTK_InteractorStyle::GetSelector()
 161 {
 162   return myInteractor->GetSelector();
 163 }
 164
 165 /*!
 166   Realeaze actors
 167 */
 168 void SVTK_InteractorStyle::FreeActors()
 169 {
 170   myLastHighlitedActor = NULL;
 171   myLastPreHighlitedActor = NULL;
 172 }
 173
 174 /*!
 175   Generate special SVTK_SelectionEvent
 176 */
 177 SVTK_SelectionEvent* SVTK_InteractorStyle::GetSelectionEvent()
 178 {
 179   mySelectionEvent->mySelectionMode = GetSelector()->SelectionMode();
 180
 181   mySelectionEvent->myIsCtrl = Interactor->GetControlKey();
 182   mySelectionEvent->myIsShift = Interactor->GetShiftKey();
 183
 184   mySelectionEvent->myLastX = mySelectionEvent->myX;
 185   mySelectionEvent->myLastY = mySelectionEvent->myY;
 186
 187   GetEventPosition( this->Interactor, mySelectionEvent->myX, mySelectionEvent->myY );
 188
 189   return mySelectionEvent.get();
 190 }
 191
 192 /*!
 193   Generate special SVTK_SelectionEvent with flipped Y coordinate
 194 */
 195 SVTK_SelectionEvent* SVTK_InteractorStyle::GetSelectionEventFlipY()
 196 {
 197   mySelectionEvent->mySelectionMode = GetSelector()->SelectionMode();
 198
 199   mySelectionEvent->myIsCtrl = Interactor->GetControlKey();
 200   mySelectionEvent->myIsShift = Interactor->GetShiftKey();
 201
 202   mySelectionEvent->myLastX = mySelectionEvent->myX;
 203   mySelectionEvent->myLastY = mySelectionEvent->myY;
 204
 205   this->Interactor->GetEventPosition(mySelectionEvent->myX, mySelectionEvent->myY);
 206
 207   return mySelectionEvent.get();
 208 }
 209
 210 void SVTK_InteractorStyle::RotateXY(int dx, int dy)
 211 {
 212   /*   if(GetCurrentRenderer() == NULL)
 213     return;
 214
 215   int *size = GetCurrentRenderer()->GetRenderWindow()->GetSize();
 216   double aDeltaElevation = -20.0 / size[1];
 217   double aDeltaAzimuth = -20.0 / size[0];
 218
 219   double rxf = double(dx) * aDeltaAzimuth * this->MotionFactor;
 220   double ryf = double(dy) * aDeltaElevation * this->MotionFactor;
 221
 222   vtkCamera *cam = GetCurrentRenderer()->GetActiveCamera();
 223   cam->Azimuth(rxf);
 224   cam->Elevation(ryf);
 225   cam->OrthogonalizeViewUp();
 226
 227   GetCurrentRenderer()->ResetCameraClippingRange();
 228
 229   this->Render();*/
 230
 231   if(GetCurrentRenderer() == NULL)
 232     return;
 233
 234   vtkCamera *cam = GetCurrentRenderer()->GetActiveCamera();
 235
 236   double viewFP[3], viewPos[3];
 237   cam->GetFocalPoint(viewFP);
 238   cam->GetPosition(viewPos);
 239
 240   if ( myCurrRotationPointType == SVTK::SetRotateGravity )
 241   {
 242     double aCenter[3];
 243     if ( ComputeBBCenter(GetCurrentRenderer(),aCenter) )
 244     {
 245       myRotationPointX = aCenter[0];
 246       myRotationPointY = aCenter[1];
 247       myRotationPointZ = aCenter[2];
 248     }
 249   }
 250
 251   // Calculate corresponding transformation
 252   vtkPerspectiveTransform* aTransform = vtkPerspectiveTransform::New();
 253   aTransform->Identity();
 254   aTransform->Translate(+myRotationPointX, +myRotationPointY, +myRotationPointZ);
 255
 256   // Azimuth transformation
 257   int *size = GetCurrentRenderer()->GetRenderWindow()->GetSize();
 258   double aDeltaAzimuth = -20.0 / size[0];
 259
 260   double rxf = double(dx) * aDeltaAzimuth * this->MotionFactor;
 261   aTransform->RotateWXYZ(rxf, cam->GetViewUp());
 262
 263   // Elevation transformation
 264   double aDeltaElevation = -20.0 / size[1];
 265
 266   double ryf = double(dy) * aDeltaElevation * this->MotionFactor;
 267   vtkMatrix4x4* aMatrix = cam->GetViewTransformMatrix();
 268   const double anAxis[3] = {-aMatrix->GetElement(0,0), // mkr : 27.11.2006 : PAL14011 - Strange behaviour in rotation in VTK Viewer.
 269                             -aMatrix->GetElement(0,1),
 270                             -aMatrix->GetElement(0,2)};
 271
 272   aTransform->RotateWXYZ(ryf, anAxis);
 273
 274   aTransform->Translate(-myRotationPointX, -myRotationPointY, -myRotationPointZ);
 275
 276   // To apply the transformation
 277   cam->SetPosition(aTransform->TransformPoint(viewPos));
 278   cam->SetFocalPoint(aTransform->TransformPoint(viewFP));
 279   aTransform->Delete();
 280
 281   cam->OrthogonalizeViewUp();
 282
 283   GetCurrentRenderer()->ResetCameraClippingRange();
 284
 285   this->Render();
 286   this->InvokeEvent(SVTK::OperationFinished,NULL);
 287 }
 288
 289 void SVTK_InteractorStyle::PanXY(int x, int y, int oldX, int oldY)
 290 {
 291   TranslateView(x, y, oldX, oldY);
 292   this->Render();
 293   this->InvokeEvent(SVTK::OperationFinished,NULL);
 294 }
 295
 296 void SVTK_InteractorStyle::DollyXY(int dx, int dy)
 297 {
 298   if (GetCurrentRenderer() == NULL)
 299     return;
 300
 301   double dxf = this->MotionFactor * (double)(dx) / (double)(GetCurrentRenderer()->GetCenter()[1]);
 302   double dyf = this->MotionFactor * (double)(dy) / (double)(GetCurrentRenderer()->GetCenter()[1]);
 303
 304   double zoomFactor = pow((double)1.1, dxf + dyf);
 305
 306   vtkCamera *aCam = GetCurrentRenderer()->GetActiveCamera();
 307   if (aCam->GetParallelProjection()) {
 308     int x0 = 0, y0 = 0, x1 = 0, y1 = 0;
 309     if( IsAdvancedZoomingEnabled() ) { // zoom relatively to the cursor
 310       int* aSize = GetCurrentRenderer()->GetRenderWindow()->GetSize();
 311       int w = aSize[0];
 312       int h = aSize[1];
 313       x0 = w / 2;
 314       y0 = h / 2;
 315       x1 = myOtherPoint.x();
 316       y1 = h - myOtherPoint.y();
 317       TranslateView( x0, y0, x1, y1 );
 318     }
 319     aCam->SetParallelScale(aCam->GetParallelScale()/zoomFactor);
 320     if( IsAdvancedZoomingEnabled() )
 321       TranslateView( x1, y1, x0, y0 );
 322   }
 323   else{
 324     aCam->Dolly(zoomFactor); // Move camera in/out along projection direction
 325     GetCurrentRenderer()->ResetCameraClippingRange();
 326   }
 327
 328   this->Render();
 329   this->InvokeEvent(SVTK::OperationFinished,NULL);
 330 }
 331
 332 void SVTK_InteractorStyle::SpinXY(int x, int y, int oldX, int oldY)
 333 {
 334   vtkCamera *cam;
 335
 336   if (GetCurrentRenderer() == NULL)
 337     return;
 338
 339   double newAngle = atan2((double)(y - GetCurrentRenderer()->GetCenter()[1]),
 340                           (double)(x - GetCurrentRenderer()->GetCenter()[0]));
 341   double oldAngle = atan2((double)(oldY -GetCurrentRenderer()->GetCenter()[1]),
 342                           (double)(oldX - GetCurrentRenderer()->GetCenter()[0]));
 343
 344   newAngle *= this->RadianToDegree;
 345   oldAngle *= this->RadianToDegree;
 346
 347   cam = GetCurrentRenderer()->GetActiveCamera();
 348   cam->Roll(newAngle - oldAngle);
 349   cam->OrthogonalizeViewUp();
 350
 351   this->Render();
 352   this->InvokeEvent(SVTK::OperationFinished,NULL);
 353 }
 354
 355
 356 /*!
 357   To reset reset view
 358 */
 359 void SVTK_InteractorStyle::OnConfigure()
 360 {
 361   this->FindPokedRenderer(0,0);
 362   this->GetCurrentRenderer()->InvokeEvent(vtkCommand::ConfigureEvent,NULL);
 363 }
 364
 365 /*!
 366   To handle mouse move event
 367 */
 368 void SVTK_InteractorStyle::OnMouseMove()
 369 {
 370   int x, y;
 371   GetEventPosition( this->Interactor, x, y );
 372   this->OnMouseMove( this->Interactor->GetControlKey(),
 373                      this->Interactor->GetShiftKey(),
 374                      x, y );
 375 }
 376
 377 /*!
 378   To handle left mouse button down event (reimplemented from vtkInteractorStyle)
 379 */
 380 void SVTK_InteractorStyle::OnLeftButtonDown()
 381 {
 382   int x, y;
 383   GetEventPosition( this->Interactor, x, y );
 384   this->OnLeftButtonDown( this->Interactor->GetControlKey(),
 385                           this->Interactor->GetShiftKey(),
 386                           x, y );
 387 }
 388
 389 /*!
 390   To handle left mouse button up event (reimplemented from vtkInteractorStyle)
 391 */
 392 void SVTK_InteractorStyle::OnLeftButtonUp()
 393 {
 394   int x, y;
 395   GetEventPosition( this->Interactor, x, y );
 396   this->OnLeftButtonUp( this->Interactor->GetControlKey(),
 397                         this->Interactor->GetShiftKey(),
 398                         x, y );
 399 }
 400
 401 /*!
 402   To handle middle mouse button down event (reimplemented from vtkInteractorStyle)
 403 */
 404 void SVTK_InteractorStyle::OnMiddleButtonDown()
 405 {
 406   int x, y;
 407   GetEventPosition( this->Interactor, x, y );
 408   this->OnMiddleButtonDown( this->Interactor->GetControlKey(),
 409                             this->Interactor->GetShiftKey(),
 410                             x, y );
 411 }
 412
 413 /*!
 414   To handle middle mouse button up event (reimplemented from vtkInteractorStyle)
 415 */
 416 void SVTK_InteractorStyle::OnMiddleButtonUp()
 417 {
 418   int x, y;
 419   GetEventPosition( this->Interactor, x, y );
 420   this->OnMiddleButtonUp( this->Interactor->GetControlKey(),
 421                           this->Interactor->GetShiftKey(),
 422                           x, y );
 423 }
 424
 425 /*!
 426   To handle right mouse button down event (reimplemented from vtkInteractorStyle)
 427 */
 428 void SVTK_InteractorStyle::OnRightButtonDown()
 429 {
 430   int x, y;
 431   GetEventPosition( this->Interactor, x, y );
 432   this->OnRightButtonDown( this->Interactor->GetControlKey(),
 433                            this->Interactor->GetShiftKey(),
 434                            x, y );
 435 }
 436
 437 /*!
 438   To handle right mouse button up event (reimplemented from vtkInteractorStyle)
 439 */
 440 void SVTK_InteractorStyle::OnRightButtonUp()
 441 {
 442   int x, y;
 443   GetEventPosition( this->Interactor, x, y );
 444   this->OnRightButtonUp( this->Interactor->GetControlKey(),
 445                          this->Interactor->GetShiftKey(),
 446                          x, y );
 447 }
 448
 449 /*!
 450   To handle mouse wheel forward event (reimplemented from #vtkInteractorStyle)
 451 */
 452 void SVTK_InteractorStyle::OnMouseWheelForward()
 453 {
 454   int x, y;
 455   GetEventPosition( this->Interactor, x, y );
 456   myOtherPoint = QPoint(x, y);
 457 }
 458
 459 /*!
 460   To handle mouse wheel backward event (reimplemented from #vtkInteractorStyle)
 461 */
 462 void SVTK_InteractorStyle::OnMouseWheelBackward()
 463 {
 464   int x, y;
 465   GetEventPosition( this->Interactor, x, y );
 466   myOtherPoint = QPoint(x, y);
 467 }
 468
 469 /*!
 470   To handle mouse double click event
 471 */
 472 void SVTK_InteractorStyle::OnMouseButtonDoubleClick()
 473 {
 474   if( myPoligonState == InProcess ) {
 475     onFinishOperation();
 476     myPoligonState = Finished;
 477   }
 478 }
 479
 480 /*!
 481   To handle mouse move event
 482 */
 483 void SVTK_InteractorStyle::OnMouseMove(int vtkNotUsed(ctrl),
 484                                        int shift,
 485                                        int x, int y)
 486 {
 487   if ( myPoligonState == Start ) {
 488     // if right button was pressed and mouse is moved
 489     // we can to draw a polygon for polygonal selection
 490     myPoligonState = InProcess;
 491     startOperation( VTK_INTERACTOR_STYLE_CAMERA_SELECT );
 492   }
 493   myShiftState = shift;
 494   if (State != VTK_INTERACTOR_STYLE_CAMERA_NONE)
 495     onOperation(QPoint(x, y));
 496   else if (ForcedState == VTK_INTERACTOR_STYLE_CAMERA_NONE)
 497     onCursorMove(QPoint(x, y));
 498 }
 499
 500 /*!
 501   To handle left mouse button down event (reimplemented from vtkInteractorStyle)
 502 */
 503 void SVTK_InteractorStyle::OnLeftButtonDown(int ctrl, int shift,
 504                                             int x, int y)
 505 {
 506   this->FindPokedRenderer(x, y);
 507   if(GetCurrentRenderer() == NULL)
 508     return;
 509
 510   if ( myPoligonState != Disable )
 511     return;
 512
 513   myShiftState = shift;
 514   // finishing current viewer operation
 515   if (State != VTK_INTERACTOR_STYLE_CAMERA_NONE) {
 516     onFinishOperation();
 517     startOperation(VTK_INTERACTOR_STYLE_CAMERA_NONE);
 518   }
 519   myOtherPoint = myPoint = QPoint(x, y);
 520   if (ForcedState != VTK_INTERACTOR_STYLE_CAMERA_NONE) {
 521     startOperation(ForcedState);
 522   } else {
 523     if (ctrl)
 524       startOperation(VTK_INTERACTOR_STYLE_CAMERA_ZOOM);
 525     else if ( myCurrRotationPointType == SVTK::StartPointSelection ||
 526               myCurrFocalPointType == SVTK::StartFocalPointSelection )
 527     {
 528       SVTK_SelectionEvent* aSelectionEvent = GetSelectionEventFlipY();
 529
 530       bool isPicked = false;
 531       vtkActorCollection* anActorCollection = GetSelector()->Pick(aSelectionEvent, GetCurrentRenderer());
 532
 533       if( anActorCollection )
 534       {
 535         anActorCollection->InitTraversal();
 536         while( vtkActor* aVTKActor = anActorCollection->GetNextActor() )
 537         {
 538           if( SALOME_Actor* anActor = SALOME_Actor::SafeDownCast( aVTKActor ) )
 539           {
 540                 Selection_Mode aSelectionMode = GetSelector()->SelectionMode();
 541                 double* aCoords;
 542                 int aVtkId;
 543                 bool isTrueType = false;
 544
 545                 if( myCurrFocalPointType == SVTK::StartFocalPointSelection ||
 546                         ( myCurrRotationPointType == SVTK::StartPointSelection && aSelectionMode == NodeSelection ) )
 547                 {
 548               SVTK::TPickLimiter aPickLimiter( myPointPicker, anActor );
 549               myPointPicker->Pick( aSelectionEvent->myX,
 550                                    aSelectionEvent->myY,
 551                                    0.0,
 552                                    GetCurrentRenderer() );
 553               aVtkId = myPointPicker->GetPointId();
 554               if ( aVtkId >= 0 )
 555               {
 556                 int anObjId = anActor->GetNodeObjId( aVtkId );
 557                 aCoords = anActor->GetNodeCoord(anObjId);
 558                 isTrueType = true;
 559               }
 560                 }
 561
 562                 if( aSelectionMode == EdgeSelection || aSelectionMode == FaceSelection ||  aSelectionMode == VolumeSelection )
 563                 {
 564               vtkSmartPointer<vtkCellPicker> aCellPicker = vtkCellPicker::New();
 565               aCellPicker->SetTolerance( 0.005 );
 566               SVTK::TPickLimiter aPickLimiter( aCellPicker, anActor );
 567               aCellPicker->Pick( aSelectionEvent->myX,
 568                                  aSelectionEvent->myY,
 569                                  0.0,
 570                                  GetCurrentRenderer() );
 571               aVtkId = aCellPicker->GetCellId();
 572               int aCellId = anActor->GetElemObjId( aVtkId );
 573
 574               if( aSelectionMode == EdgeSelection )
 575                 isTrueType = anActor->GetObjDimension( aCellId ) == 1;
 576               else if( aSelectionMode == FaceSelection )
 577                 isTrueType = anActor->GetObjDimension( aCellId ) == 2;
 578               else if( aSelectionMode == VolumeSelection )
 579                 isTrueType = anActor->GetObjDimension( aCellId ) == 3;
 580
 581               if ( aVtkId >= 0 && isTrueType )
 582                 aCoords = anActor->GetGravityCenter( aCellId );
 583                 }
 584
 585                 if( aVtkId >= 0 )
 586                 {
 587               if (myCurrRotationPointType == SVTK::StartPointSelection) {
 588                 myCurrRotationPointType = SVTK::SetRotateSelected;
 589                 // invoke event for update coordinates in SVTK_SetRotationPointDlg
 590                 if( isTrueType )
 591                   InvokeEvent(SVTK::RotationPointChanged,(void*)aCoords);
 592                 else
 593                   InvokeEvent(SVTK::RotationPointChanged);
 594                 GetSelector()->SetSelectionMode(ActorSelection);
 595               }
 596               else if (myCurrFocalPointType == SVTK::StartFocalPointSelection) {
 597                 myCurrFocalPointType = SVTK::SetFocalPointSelected;
 598
 599                 // invoke event for update coordinates in SVTK_ViewParameterDlg
 600                 InvokeEvent(SVTK::FocalPointChanged,(void*)aCoords);
 601               }
 602
 603               isPicked = true;
 604               break;
 605             }
 606           }
 607         }
 608       }
 609
 610       if( !isPicked )
 611       {
 612         if (myCurrRotationPointType == SVTK::StartPointSelection) {
 613           // invoke event with no data (for SVTK_SetRotationPointDlg)
 614           InvokeEvent(SVTK::RotationPointChanged,0);
 615           myCurrRotationPointType = myPrevRotationPointType;
 616           GetSelector()->SetSelectionMode(ActorSelection);
 617         }
 618         else if (myCurrFocalPointType == SVTK::StartFocalPointSelection) {
 619           // invoke event with no data (for SVTK_ViewParameterDlg)
 620           InvokeEvent(SVTK::FocalPointChanged,0);
 621           myCurrFocalPointType = myPrevFocalPointType;
 622         }
 623       }
 624
 625       myHighlightSelectionPointActor->SetVisibility( false );
 626       if(GetCurrentRenderer() != NULL)
 627         GetCurrentRenderer()->RemoveActor( myHighlightSelectionPointActor.GetPointer() );
 628
 629       GetRenderWidget()->setCursor(myDefCursor);
 630     }
 631     else
 632       startOperation(VTK_INTERACTOR_STYLE_CAMERA_SELECT);
 633   }
 634
 635   return;
 636 }
 637
 638 /*!
 639   To handle left mouse button up event (reimplemented from vtkInteractorStyle)
 640 */
 641 void SVTK_InteractorStyle::OnLeftButtonUp(int vtkNotUsed(ctrl),
 642                                           int shift,
 643                                           int x,
 644                                           int y)
 645 {
 646   myShiftState = shift;
 647   if( myPoligonState == InProcess ) { // add a new point of polygon
 648     myPolygonPoints.append( QPoint( x, y ) );
 649     this->Interactor->GetEventPosition( mySelectionEvent->myX, mySelectionEvent->myY );
 650     mySelectionEvent->myPolygonPoints.append( QPoint( mySelectionEvent->myX, mySelectionEvent->myY ) );
 651     return;
 652   }
 653   else if ( myPoligonState == Closed ) { // close polygon and apply a selection
 654     onFinishOperation();
 655     myPoligonState = Finished;
 656     return;
 657   }
 658   else if( myPoligonState == Finished || myPoligonState == NotValid )
 659     return;
 660   // finishing current viewer operation
 661   if (State != VTK_INTERACTOR_STYLE_CAMERA_NONE) {
 662     onFinishOperation();
 663     startOperation(VTK_INTERACTOR_STYLE_CAMERA_NONE);
 664   }
 665 }
 666
 667 /*!
 668   To handle middle mouse button down event (reimplemented from vtkInteractorStyle)
 669 */
 670 void SVTK_InteractorStyle::OnMiddleButtonDown(int ctrl,
 671                                               int shift,
 672                                               int x, int y)
 673 {
 674   this->FindPokedRenderer(x, y);
 675   if(GetCurrentRenderer() == NULL)
 676     return;
 677
 678   if ( myPoligonState != Disable )
 679     return;
 680
 681   myShiftState = shift;
 682   // finishing current viewer operation
 683   if (State != VTK_INTERACTOR_STYLE_CAMERA_NONE) {
 684     onFinishOperation();
 685     startOperation(VTK_INTERACTOR_STYLE_CAMERA_NONE);
 686   }
 687   myOtherPoint = myPoint = QPoint(x, y);
 688   if (ForcedState != VTK_INTERACTOR_STYLE_CAMERA_NONE) {
 689     startOperation(ForcedState);
 690   }
 691   else {
 692     if (ctrl)
 693       startOperation(VTK_INTERACTOR_STYLE_CAMERA_PAN);
 694   }
 695 }
 696
 697
 698 /*!
 699   To handle middle mouse button up event (reimplemented from vtkInteractorStyle)
 700 */
 701 void SVTK_InteractorStyle::OnMiddleButtonUp(int vtkNotUsed(ctrl),
 702                                             int shift,
 703                                             int vtkNotUsed(x),
 704                                             int vtkNotUsed(y))
 705 {
 706   if( myPoligonState == InProcess ) { // delete a point of polygon
 707     if ( myPolygonPoints.size() > 2 ) {
 708       myPolygonPoints.remove( myPolygonPoints.size() - 1 );
 709       mySelectionEvent->myPolygonPoints.remove( mySelectionEvent->myPolygonPoints.size() - 1 );
 710     }
 711     return;
 712   }
 713   myShiftState = shift;
 714   // finishing current viewer operation
 715   if (State != VTK_INTERACTOR_STYLE_CAMERA_NONE) {
 716     onFinishOperation();
 717     startOperation(VTK_INTERACTOR_STYLE_CAMERA_NONE);
 718   }
 719 }
 720
 721
 722 /*!
 723   To handle right mouse button down event (reimplemented from vtkInteractorStyle)
 724 */
 725 void SVTK_InteractorStyle::OnRightButtonDown(int ctrl,
 726                                              int shift,
 727                                              int x, int y)
 728 {
 729   this->FindPokedRenderer(x, y);
 730   if(GetCurrentRenderer() == NULL)
 731     return;
 732
 733   myShiftState = shift;
 734
 735   if ( !ctrl ) {
 736     myPoligonState = Start;
 737     this->Interactor->GetEventPosition(mySelectionEvent->myX, mySelectionEvent->myY);
 738     mySelectionEvent->myPolygonPoints.append( QPoint( mySelectionEvent->myX, mySelectionEvent->myY) );
 739   }
 740   // finishing current viewer operation
 741   if (State != VTK_INTERACTOR_STYLE_CAMERA_NONE) {
 742     onFinishOperation();
 743     startOperation(VTK_INTERACTOR_STYLE_CAMERA_NONE);
 744   }
 745   myOtherPoint = myPoint = QPoint(x, y);
 746   if (ForcedState != VTK_INTERACTOR_STYLE_CAMERA_NONE) {
 747     startOperation(ForcedState);
 748   }
 749   else {
 750     if (ctrl)
 751       startOperation(VTK_INTERACTOR_STYLE_CAMERA_ROTATE);
 752   }
 753 }
 754
 755 /*!
 756   To handle right mouse button up event (reimplemented from vtkInteractorStyle)
 757 */
 758 void SVTK_InteractorStyle::OnRightButtonUp(int vtkNotUsed(ctrl),
 759                                            int shift,
 760                                            int vtkNotUsed(x),
 761                                            int vtkNotUsed(y))
 762 {
 763   if( myPoligonState == Start ) { // if right button was pressed but mouse is not moved
 764     myPoligonState = Disable;
 765     mySelectionEvent->myPolygonPoints.clear();
 766   }
 767
 768   if( myPoligonState != Disable ) {
 769     endDrawPolygon();
 770     myPoligonState = Finished;
 771     startOperation(VTK_INTERACTOR_STYLE_CAMERA_NONE);
 772     return;
 773   }
 774
 775   myShiftState = shift;
 776   // finishing current viewer operation
 777   if (State != VTK_INTERACTOR_STYLE_CAMERA_NONE) {
 778     onFinishOperation();
 779     startOperation(VTK_INTERACTOR_STYLE_CAMERA_NONE);
 780   }
 781 }
 782
 783 /* XPM */
 784 const char* imageZoomCursor[] = {
 785 "32 32 3 1",
 786 ". c None",
 787 "a c #000000",
 788 "# c #ffffff",
 789 "................................",
 790 "................................",
 791 ".#######........................",
 792 "..aaaaaaa.......................",
 793 "................................",
 794 ".............#####..............",
 795 "...........##.aaaa##............",
 796 "..........#.aa.....a#...........",
 797 ".........#.a.........#..........",
 798 ".........#a..........#a.........",
 799 "........#.a...........#.........",
 800 "........#a............#a........",
 801 "........#a............#a........",
 802 "........#a............#a........",
 803 "........#a............#a........",
 804 ".........#...........#.a........",
 805 ".........#a..........#a.........",
 806 ".........##.........#.a.........",
 807 "........#####.....##.a..........",
 808 ".......###aaa#####.aa...........",
 809 "......###aa...aaaaa.......#.....",
 810 ".....###aa................#a....",
 811 "....###aa.................#a....",
 812 "...###aa...............#######..",
 813 "....#aa.................aa#aaaa.",
 814 ".....a....................#a....",
 815 "..........................#a....",
 816 "...........................a....",
 817 "................................",
 818 "................................",
 819 "................................",
 820 "................................"};
 821
 822 const char* imageRotateCursor[] = {
 823 "32 32 3 1",
 824 ". c None",
 825 "a c #000000",
 826 "# c #ffffff",
 827 "................................",
 828 "................................",
 829 "................................",
 830 "................................",
 831 "........#.......................",
 832 ".......#.a......................",
 833 "......#######...................",
 834 ".......#aaaaa#####..............",
 835 "........#..##.a#aa##........##..",
 836 ".........a#.aa..#..a#.....##.aa.",
 837 ".........#.a.....#...#..##.aa...",
 838 ".........#a.......#..###.aa.....",
 839 "........#.a.......#a..#aa.......",
 840 "........#a.........#..#a........",
 841 "........#a.........#a.#a........",
 842 "........#a.........#a.#a........",
 843 "........#a.........#a.#a........",
 844 ".........#.........#a#.a........",
 845 "........##a........#a#a.........",
 846 "......##.a#.......#.#.a.........",
 847 "....##.aa..##.....##.a..........",
 848 "..##.aa.....a#####.aa...........",
 849 "...aa.........aaa#a.............",
 850 "................#.a.............",
 851 "...............#.a..............",
 852 "..............#.a...............",
 853 "...............a................",
 854 "................................",
 855 "................................",
 856 "................................",
 857 "................................",
 858 "................................"};
 859
 860
 861 /*!
 862   loads cursors for viewer operations - zoom, pan, etc...
 863 */
 864 void SVTK_InteractorStyle::loadCursors()
 865 {
 866   myDefCursor       = QCursor(Qt::ArrowCursor);
 867   myHandCursor      = QCursor(Qt::PointingHandCursor);
 868   myPanCursor       = QCursor(Qt::SizeAllCursor);
 869   myZoomCursor      = QCursor(QPixmap(imageZoomCursor));
 870   myRotateCursor    = QCursor(QPixmap(imageRotateCursor));
 871   mySpinCursor      = QCursor(QPixmap(imageRotateCursor)); // temporarly !!!!!!
 872   myGlobalPanCursor = QCursor(Qt::CrossCursor);
 873   myCursorState     = false;
 874 }
 875
 876
 877 /*!
 878   Starts Zoom operation (e.g. through menu command)
 879 */
 880 void SVTK_InteractorStyle::startZoom()
 881 {
 882   if (State != VTK_INTERACTOR_STYLE_CAMERA_NONE)
 883   {
 884     onFinishOperation();
 885     startOperation(VTK_INTERACTOR_STYLE_CAMERA_NONE);
 886   }
 887   setCursor(VTK_INTERACTOR_STYLE_CAMERA_ZOOM);
 888   ForcedState = VTK_INTERACTOR_STYLE_CAMERA_ZOOM;
 889 }
 890
 891
 892 /*!
 893   Starts Pan operation (e.g. through menu command)
 894 */
 895 void SVTK_InteractorStyle::startPan()
 896 {
 897   if (State != VTK_INTERACTOR_STYLE_CAMERA_NONE)
 898   {
 899     onFinishOperation();
 900     startOperation(VTK_INTERACTOR_STYLE_CAMERA_NONE);
 901   }
 902   setCursor(VTK_INTERACTOR_STYLE_CAMERA_PAN);
 903   ForcedState = VTK_INTERACTOR_STYLE_CAMERA_PAN;
 904 }
 905
 906 /*!
 907   Starts Rotate operation (e.g. through menu command)
 908 */
 909 void SVTK_InteractorStyle::startRotate()
 910 {
 911   if (State != VTK_INTERACTOR_STYLE_CAMERA_NONE)
 912   {
 913     onFinishOperation();
 914     startOperation(VTK_INTERACTOR_STYLE_CAMERA_NONE);
 915   }
 916   setCursor(VTK_INTERACTOR_STYLE_CAMERA_ROTATE);
 917   ForcedState = VTK_INTERACTOR_STYLE_CAMERA_ROTATE;
 918 }
 919
 920 /*!
 921   Set rotation point selected by user
 922 */
 923 void SVTK_InteractorStyle::startPointSelection()
 924 {
 925   myCurrRotationPointType = SVTK::StartPointSelection;
 926
 927   if(GetCurrentRenderer() != NULL) {
 928     GetCurrentRenderer()->AddActor( myHighlightSelectionPointActor.GetPointer() );
 929     double aColor[3];
 930     GetCurrentRenderer()->GetBackground( aColor );
 931     myHighlightSelectionPointActor->GetProperty()->SetColor(1. - aColor[0],
 932                                                             1. - aColor[1],
 933                                                             1. - aColor[2]);
 934   }
 935
 936   setCursor(VTK_INTERACTOR_STYLE_CAMERA_NONE);
 937 }
 938
 939 /*!
 940   Set focal point selected by user
 941 */
 942 void SVTK_InteractorStyle::startFocalPointSelection()
 943 {
 944   myCurrFocalPointType = SVTK::StartFocalPointSelection;
 945
 946   if(GetCurrentRenderer() != NULL) {
 947     GetCurrentRenderer()->AddActor( myHighlightSelectionPointActor.GetPointer() );
 948     double aColor[3];
 949     GetCurrentRenderer()->GetBackground( aColor );
 950     myHighlightSelectionPointActor->GetProperty()->SetColor(1. - aColor[0],
 951                                                             1. - aColor[1],
 952                                                             1. - aColor[2]);
 953   }
 954
 955   setCursor(VTK_INTERACTOR_STYLE_CAMERA_NONE);
 956 }
 957
 958 /*!
 959   Starts Spin operation (e.g. through menu command)
 960 */
 961 void SVTK_InteractorStyle::startSpin()
 962 {
 963   if (State != VTK_INTERACTOR_STYLE_CAMERA_NONE)
 964   {
 965     onFinishOperation();
 966     startOperation(VTK_INTERACTOR_STYLE_CAMERA_NONE);
 967   }
 968   setCursor(VTK_INTERACTOR_STYLE_CAMERA_SPIN);
 969   ForcedState = VTK_INTERACTOR_STYLE_CAMERA_SPIN;
 970 }
 971
 972
 973
 974 /*!
 975   Starts Fit Area operation (e.g. through menu command)
 976 */
 977 void SVTK_InteractorStyle::startFitArea()
 978 {
 979   if (State != VTK_INTERACTOR_STYLE_CAMERA_NONE)
 980   {
 981     onFinishOperation();
 982     startOperation(VTK_INTERACTOR_STYLE_CAMERA_NONE);
 983   }
 984   setCursor(VTK_INTERACTOR_STYLE_CAMERA_FIT);
 985   ForcedState = VTK_INTERACTOR_STYLE_CAMERA_FIT;
 986 }
 987
 988
 989 /*!
 990   Starts Global Panning operation (e.g. through menu command)
 991 */
 992 void SVTK_InteractorStyle::startGlobalPan()
 993 {
 994   if (State != VTK_INTERACTOR_STYLE_CAMERA_NONE)
 995   {
 996     onFinishOperation();
 997     startOperation(VTK_INTERACTOR_STYLE_CAMERA_NONE);
 998   }
 999   setCursor(VTK_INTERACTOR_STYLE_CAMERA_GLOBAL_PAN);
1000   ForcedState = VTK_INTERACTOR_STYLE_CAMERA_GLOBAL_PAN;
1001
1002   // store current zoom scale
1003   myScale = GetCurrentRenderer()->GetActiveCamera()->GetParallelScale();
1004
1005   GetCurrentRenderer()->ResetCamera();
1006
1007   this->Render();
1008 }
1009
1010
1011 /*!
1012   Fits viewer contents to rect
1013 */
1014 void SVTK_InteractorStyle::fitRect(const int left,
1015                                    const int top,
1016                                    const int right,
1017                                    const int bottom)
1018 {
1019   if (GetCurrentRenderer() == NULL)
1020     return;
1021
1022   // move camera
1023   int x = (left + right)/2;
1024   int y = (top + bottom)/2;
1025   int *aSize = GetCurrentRenderer()->GetRenderWindow()->GetSize();
1026   int oldX = aSize[0]/2;
1027   int oldY = aSize[1]/2;
1028   TranslateView(oldX, oldY, x, y);
1029
1030   // zoom camera
1031   double dxf = right == left ? 1.0 : (double)(aSize[0]) / (double)(abs(right - left));
1032   double dyf = bottom == top ? 1.0 : (double)(aSize[1]) / (double)(abs(bottom - top));
1033   double zoomFactor = (dxf + dyf)/2 ;
1034
1035   vtkCamera *aCam = GetCurrentRenderer()->GetActiveCamera();
1036   if(aCam->GetParallelProjection())
1037     aCam->SetParallelScale(aCam->GetParallelScale()/zoomFactor);
1038   else{
1039     aCam->Dolly(zoomFactor);
1040     GetCurrentRenderer()->ResetCameraClippingRange();
1041   }
1042
1043   this->Render();
1044 }
1045
1046
1047 /*!
1048   Starts viewer operation (!internal usage!)
1049 */
1050 void SVTK_InteractorStyle::startOperation(int operation)
1051 {
1052   switch(operation)
1053   {
1054   case VTK_INTERACTOR_STYLE_CAMERA_GLOBAL_PAN:
1055   case VTK_INTERACTOR_STYLE_CAMERA_ZOOM:
1056   case VTK_INTERACTOR_STYLE_CAMERA_PAN:
1057   case VTK_INTERACTOR_STYLE_CAMERA_ROTATE:
1058   case VTK_INTERACTOR_STYLE_CAMERA_SPIN:
1059   case VTK_INTERACTOR_STYLE_CAMERA_FIT:
1060   case VTK_INTERACTOR_STYLE_CAMERA_SELECT:
1061     if (State != VTK_INTERACTOR_STYLE_CAMERA_NONE)
1062       startOperation(VTK_INTERACTOR_STYLE_CAMERA_NONE);
1063     State = operation;
1064     if (State != VTK_INTERACTOR_STYLE_CAMERA_SELECT)
1065       setCursor(operation);
1066     onStartOperation();
1067     break;
1068   case VTK_INTERACTOR_STYLE_CAMERA_NONE:
1069   default:
1070     setCursor(VTK_INTERACTOR_STYLE_CAMERA_NONE);
1071     State = ForcedState = VTK_INTERACTOR_STYLE_CAMERA_NONE;
1072     break;
1073   }
1074 }
1075
1076
1077 /*!
1078   Sets proper cursor for window when viewer operation is activated
1079 */
1080 void SVTK_InteractorStyle::setCursor(const int operation)
1081 {
1082   if (!GetRenderWidget()) return;
1083   switch (operation)
1084   {
1085     case VTK_INTERACTOR_STYLE_CAMERA_ZOOM:
1086       GetRenderWidget()->setCursor(myZoomCursor);
1087       myCursorState = true;
1088       break;
1089     case VTK_INTERACTOR_STYLE_CAMERA_PAN:
1090       GetRenderWidget()->setCursor(myPanCursor);
1091       myCursorState = true;
1092       break;
1093     case VTK_INTERACTOR_STYLE_CAMERA_ROTATE:
1094       GetRenderWidget()->setCursor(myRotateCursor);
1095       myCursorState = true;
1096       break;
1097     case VTK_INTERACTOR_STYLE_CAMERA_SPIN:
1098       GetRenderWidget()->setCursor(mySpinCursor);
1099       myCursorState = true;
1100       break;
1101     case VTK_INTERACTOR_STYLE_CAMERA_GLOBAL_PAN:
1102       GetRenderWidget()->setCursor(myGlobalPanCursor);
1103       myCursorState = true;
1104       break;
1105     case VTK_INTERACTOR_STYLE_CAMERA_FIT:
1106     case VTK_INTERACTOR_STYLE_CAMERA_SELECT:
1107       GetRenderWidget()->setCursor(myHandCursor);
1108       myCursorState = true;
1109       break;
1110     case VTK_INTERACTOR_STYLE_CAMERA_NONE:
1111     default:
1112       if ( myCurrRotationPointType == SVTK::StartPointSelection ||
1113            myCurrFocalPointType == SVTK::StartFocalPointSelection )
1114         GetRenderWidget()->setCursor(myHandCursor);
1115       else
1116         GetRenderWidget()->setCursor(myDefCursor);
1117       myCursorState = false;
1118       break;
1119   }
1120 }
1121
1122
1123 /*!
1124   Called when viewer operation started (!put necessary initialization here!)
1125 */
1126 void SVTK_InteractorStyle::onStartOperation()
1127 {
1128   if (!GetRenderWidget())
1129     return;
1130
1131   vtkRenderWindowInteractor *aRWI = this->Interactor;
1132   vtkRenderWindow *aRenWin = aRWI->GetRenderWindow();
1133   aRenWin->SetDesiredUpdateRate(aRWI->GetDesiredUpdateRate());
1134
1135   switch (State) {
1136     case VTK_INTERACTOR_STYLE_CAMERA_SELECT:
1137     case VTK_INTERACTOR_STYLE_CAMERA_FIT:
1138     {
1139       if ( myPoligonState == InProcess )
1140         drawPolygon();
1141       else
1142         drawRect();
1143       break;
1144     }
1145     case VTK_INTERACTOR_STYLE_CAMERA_ZOOM:
1146     case VTK_INTERACTOR_STYLE_CAMERA_PAN:
1147     case VTK_INTERACTOR_STYLE_CAMERA_ROTATE:
1148     case VTK_INTERACTOR_STYLE_CAMERA_GLOBAL_PAN:
1149     case VTK_INTERACTOR_STYLE_CAMERA_SPIN:
1150       break;
1151   }
1152 }
1153
1154
1155 /*!
1156   Called when viewer operation finished (!put necessary post-processing here!)
1157 */
1158 void SVTK_InteractorStyle::onFinishOperation()
1159 {
1160   if (!GetRenderWidget())
1161     return;
1162
1163   vtkRenderWindowInteractor *aRWI = this->Interactor;
1164   vtkRenderWindow *aRenWin = aRWI->GetRenderWindow();
1165   aRenWin->SetDesiredUpdateRate(aRWI->GetStillUpdateRate());
1166
1167   SVTK_SelectionEvent* aSelectionEvent = GetSelectionEventFlipY();
1168
1169   switch (State) {
1170     case VTK_INTERACTOR_STYLE_CAMERA_SELECT:
1171     case VTK_INTERACTOR_STYLE_CAMERA_FIT:
1172     {
1173       endDrawRect();
1174       QRect aRect(myPoint, myOtherPoint);
1175       aRect = aRect.normalized();
1176
1177       if (State == VTK_INTERACTOR_STYLE_CAMERA_FIT) {
1178         // making fit rect opeation
1179         int w, h;
1180         Interactor->GetSize(w, h);
1181         int x1 = aRect.left();
1182         int y1 = h - aRect.top() - 1;
1183         int x2 = aRect.right();
1184         int y2 = h - aRect.bottom() - 1;
1185         fitRect(x1, y1, x2, y2);
1186       }
1187       else {
1188         if (myPoint == myOtherPoint)
1189         {
1190           // process point selection
1191           this->FindPokedRenderer(aSelectionEvent->myX, aSelectionEvent->myY);
1192           Interactor->StartPickCallback();
1193
1194           SALOME_Actor* aHighlightedActor = NULL;
1195           vtkActorCollection* anActorCollection = GetSelector()->Pick(aSelectionEvent, GetCurrentRenderer());
1196
1197           aSelectionEvent->myIsRectangle = false;
1198           aSelectionEvent->myIsPolygon = false;
1199           if(!myShiftState)
1200             GetSelector()->ClearIObjects();
1201
1202           if( anActorCollection )
1203           {
1204             if( !myShiftState &&
1205                 anActorCollection->GetNumberOfItems () > 1 &&
1206                 myLastHighlitedActor.GetPointer() ) {
1207               anActorCollection->RemoveItem ( myLastHighlitedActor.GetPointer() );
1208             }
1209             anActorCollection->InitTraversal();
1210             while( vtkActor* aVTKActor = anActorCollection->GetNextActor() )
1211             {
1212               if( SALOME_Actor* anActor = SALOME_Actor::SafeDownCast( aVTKActor ) )
1213               {
1214                 if( anActor->Highlight( this, aSelectionEvent, true ) )
1215                 {
1216                   aHighlightedActor = anActor;
1217                   break;
1218                 }
1219               }
1220             }
1221           }
1222
1223           if( !aHighlightedActor )
1224           {
1225             if(myLastHighlitedActor.GetPointer() && myLastHighlitedActor.GetPointer() != aHighlightedActor)
1226               myLastHighlitedActor->Highlight( this, aSelectionEvent, false );
1227           }
1228           myLastHighlitedActor = aHighlightedActor;
1229         }
1230         else
1231         {
1232           if ( myPoligonState == InProcess || myPoligonState == Closed )
1233             aSelectionEvent->myIsPolygon = true;
1234           else
1235             aSelectionEvent->myIsRectangle = true;
1236
1237           //processing polygonal selection
1238           Interactor->StartPickCallback();
1239           GetSelector()->StartPickCallback();
1240
1241           if(!myShiftState)
1242             GetSelector()->ClearIObjects();
1243
1244           VTK::ActorCollectionCopy aCopy(GetCurrentRenderer()->GetActors());
1245           vtkActorCollection* aListActors = aCopy.GetActors();
1246           aListActors->InitTraversal();
1247           while(vtkActor* aActor = aListActors->GetNextActor())
1248           {
1249             if(aActor->GetVisibility())
1250             {
1251               if(SALOME_Actor* aSActor = SALOME_Actor::SafeDownCast(aActor))
1252               {
1253                 if(aSActor->hasIO())
1254                   aSActor->Highlight( this, aSelectionEvent, true );
1255               }
1256             }
1257           }
1258         }
1259         aSelectionEvent->myIsRectangle = false;
1260         aSelectionEvent->myIsPolygon = false;
1261         aSelectionEvent->myPolygonPoints.clear();
1262         endDrawPolygon();
1263         Interactor->EndPickCallback();
1264         GetSelector()->EndPickCallback();
1265       }
1266       break;
1267     }
1268     case VTK_INTERACTOR_STYLE_CAMERA_ZOOM:
1269     case VTK_INTERACTOR_STYLE_CAMERA_PAN:
1270     case VTK_INTERACTOR_STYLE_CAMERA_ROTATE:
1271     case VTK_INTERACTOR_STYLE_CAMERA_SPIN:
1272       break;
1273     case VTK_INTERACTOR_STYLE_CAMERA_GLOBAL_PAN:
1274     {
1275       int w, h, x, y;
1276       Interactor->GetSize(w, h);
1277       x = myPoint.x();
1278       y = h - myPoint.y() - 1;
1279       Place(x, y);
1280     }
1281     break;
1282   }
1283
1284   this->Render();
1285 }
1286
1287
1288 /*!
1289   Called during viewer operation when user moves mouse (!put necessary processing here!)
1290 */
1291 void SVTK_InteractorStyle::onOperation(QPoint mousePos)
1292 {
1293   if (!GetRenderWidget())
1294     return;
1295
1296   switch (State) {
1297   case VTK_INTERACTOR_STYLE_CAMERA_PAN:
1298     {
1299       this->PanXY(mousePos.x(), myPoint.y(), myPoint.x(), mousePos.y());
1300       myPoint = mousePos;
1301       break;
1302     }
1303   case VTK_INTERACTOR_STYLE_CAMERA_ZOOM:
1304     {
1305       this->DollyXY(mousePos.x() - myPoint.x(), mousePos.y() - myPoint.y());
1306       myPoint = mousePos;
1307       break;
1308     }
1309   case VTK_INTERACTOR_STYLE_CAMERA_ROTATE:
1310     {
1311       this->RotateXY(mousePos.x() - myPoint.x(), myPoint.y() - mousePos.y());
1312       myPoint = mousePos;
1313       break;
1314     }
1315   case VTK_INTERACTOR_STYLE_CAMERA_SPIN:
1316     {
1317       this->SpinXY(mousePos.x(), mousePos.y(), myPoint.x(), myPoint.y());
1318       myPoint = mousePos;
1319       break;
1320     }
1321   case VTK_INTERACTOR_STYLE_CAMERA_GLOBAL_PAN:
1322     {
1323       break;
1324     }
1325   case VTK_INTERACTOR_STYLE_CAMERA_SELECT:
1326     {
1327       if (!myCursorState)
1328         setCursor(VTK_INTERACTOR_STYLE_CAMERA_SELECT);
1329     }
1330   case VTK_INTERACTOR_STYLE_CAMERA_FIT:
1331     {
1332       myOtherPoint = mousePos;
1333       if ( myPoligonState == InProcess || myPoligonState == Closed || myPoligonState == NotValid )
1334         drawPolygon();
1335       else if ( myPoligonState != Finished )
1336         drawRect();
1337       break;
1338     }
1339   }
1340 }
1341
1342 /*!
1343   Called when user moves mouse inside viewer window and there is no active viewer operation
1344   (!put necessary processing here!)
1345 */
1346 void SVTK_InteractorStyle::onCursorMove(QPoint mousePos)
1347 {
1348   if ( !GetSelector()->IsPreSelectionEnabled() )
1349     return;
1350
1351   // processing highlighting
1352   SVTK_SelectionEvent* aSelectionEvent = GetSelectionEventFlipY();
1353   this->FindPokedRenderer(aSelectionEvent->myX,aSelectionEvent->myY);
1354
1355   bool anIsChanged = false;
1356
1357   SALOME_Actor* aPreHighlightedActor = NULL;
1358   vtkActorCollection* anActorCollection = GetSelector()->Pick(aSelectionEvent, GetCurrentRenderer());
1359
1360   if ( myCurrFocalPointType == SVTK::StartFocalPointSelection )
1361   {
1362     myHighlightSelectionPointActor->SetVisibility( false );
1363
1364     if( anActorCollection )
1365     {
1366       anActorCollection->InitTraversal();
1367       while( vtkActor* aVTKActor = anActorCollection->GetNextActor() )
1368       {
1369         if( SALOME_Actor* anActor = SALOME_Actor::SafeDownCast( aVTKActor ) )
1370         {
1371           SVTK::TPickLimiter aPickLimiter( myPointPicker, anActor );
1372           myPointPicker->Pick( aSelectionEvent->myX, aSelectionEvent->myY, 0.0, GetCurrentRenderer() );
1373           int aVtkId = myPointPicker->GetPointId();
1374           if ( aVtkId >= 0 ) {
1375             int anObjId = anActor->GetNodeObjId( aVtkId );
1376
1377             TColStd_IndexedMapOfInteger aMapIndex;
1378             aMapIndex.Add( anObjId );
1379             myHighlightSelectionPointActor->MapPoints( anActor, aMapIndex );
1380
1381             myHighlightSelectionPointActor->SetVisibility( true );
1382             anIsChanged = true;
1383             break;
1384           }
1385         }
1386       }
1387     }
1388   }
1389   else {
1390     if( anActorCollection )
1391     {
1392       anActorCollection->InitTraversal();
1393       while( vtkActor* aVTKActor = anActorCollection->GetNextActor() )
1394       {
1395         if( SALOME_Actor* anActor = SALOME_Actor::SafeDownCast( aVTKActor ) )
1396         {
1397           anIsChanged = anActor->PreHighlight( this, aSelectionEvent, true );
1398           if( anActor->isPreselected() )
1399           {
1400             aPreHighlightedActor = anActor;
1401             break;
1402           }
1403         }
1404       }
1405     }
1406
1407     if(myLastPreHighlitedActor.GetPointer() && myLastPreHighlitedActor.GetPointer() != aPreHighlightedActor)
1408       anIsChanged |= myLastPreHighlitedActor->PreHighlight( this, aSelectionEvent, false );
1409
1410   }
1411
1412   myLastPreHighlitedActor = aPreHighlightedActor;
1413
1414   if(anIsChanged)
1415     this->Render();
1416 }
1417
1418 /*!
1419   Called on finsh GlobalPan operation
1420 */
1421 void SVTK_InteractorStyle::Place(const int theX, const int theY)
1422 {
1423   if (GetCurrentRenderer() == NULL)
1424     return;
1425
1426   //translate view
1427   int *aSize = GetCurrentRenderer()->GetRenderWindow()->GetSize();
1428   int centerX = aSize[0]/2;
1429   int centerY = aSize[1]/2;
1430
1431   TranslateView(centerX, centerY, theX, theY);
1432
1433   // restore zoom scale
1434   vtkCamera *cam = GetCurrentRenderer()->GetActiveCamera();
1435   cam->SetParallelScale(myScale);
1436   GetCurrentRenderer()->ResetCameraClippingRange();
1437
1438   this->Render();
1439 }
1440
1441
1442
1443 /*!
1444   Translates view from Point to Point
1445 */
1446 void SVTK_InteractorStyle::TranslateView(int toX, int toY, int fromX, int fromY)
1447 {
1448   if (GetCurrentRenderer() == NULL)
1449     return;
1450
1451   vtkCamera *cam = GetCurrentRenderer()->GetActiveCamera();
1452   double viewFocus[4], focalDepth, viewPoint[3];
1453   double newPickPoint[4], oldPickPoint[4], motionVector[3];
1454   cam->GetFocalPoint(viewFocus);
1455
1456   this->ComputeWorldToDisplay(viewFocus[0], viewFocus[1],
1457                               viewFocus[2], viewFocus);
1458   focalDepth = viewFocus[2];
1459
1460   this->ComputeDisplayToWorld(double(toX), double(toY),
1461                               focalDepth, newPickPoint);
1462   this->ComputeDisplayToWorld(double(fromX),double(fromY),
1463                               focalDepth, oldPickPoint);
1464
1465   // camera motion is reversed
1466   motionVector[0] = oldPickPoint[0] - newPickPoint[0];
1467   motionVector[1] = oldPickPoint[1] - newPickPoint[1];
1468   motionVector[2] = oldPickPoint[2] - newPickPoint[2];
1469
1470   cam->GetFocalPoint(viewFocus);
1471   cam->GetPosition(viewPoint);
1472   cam->SetFocalPoint(motionVector[0] + viewFocus[0],
1473                      motionVector[1] + viewFocus[1],
1474                      motionVector[2] + viewFocus[2]);
1475   cam->SetPosition(motionVector[0] + viewPoint[0],
1476                    motionVector[1] + viewPoint[1],
1477                    motionVector[2] + viewPoint[2]);
1478 }
1479
1480 void SVTK_InteractorStyle::IncrementalPan( const int incrX, const int incrY )
1481 {
1482   this->PanXY( incrX, incrY, 0, 0 );
1483 }
1484
1485 void SVTK_InteractorStyle::IncrementalZoom( const int incr )
1486 {
1487   this->DollyXY( incr, incr );
1488 }
1489
1490 void SVTK_InteractorStyle::IncrementalRotate( const int incrX, const int incrY )
1491 {
1492   this->RotateXY( incrX, -incrY );
1493 }
1494
1495 /*!
1496   Redefined in order to add an observer (callback) for custorm event (space mouse event)
1497 */
1498 void SVTK_InteractorStyle::SetInteractor( vtkRenderWindowInteractor* theInteractor )
1499 {
1500   // register EventCallbackCommand as observer of standard events (keypress, mousemove, etc)
1501   Superclass::SetInteractor( theInteractor );
1502
1503   myInteractor = dynamic_cast<SVTK_GenericRenderWindowInteractor*>(theInteractor);
1504
1505   if(theInteractor) {
1506     // register EventCallbackCommand as observer of custorm event (3d space mouse event)
1507     theInteractor->AddObserver( SVTK::SpaceMouseMoveEvent, EventCallbackCommand, Priority );
1508     theInteractor->AddObserver( SVTK::SpaceMouseButtonEvent, EventCallbackCommand, Priority );
1509     theInteractor->AddObserver( SVTK::PanLeftEvent, EventCallbackCommand, Priority );
1510     theInteractor->AddObserver( SVTK::PanRightEvent, EventCallbackCommand, Priority );
1511     theInteractor->AddObserver( SVTK::PanUpEvent, EventCallbackCommand, Priority );
1512     theInteractor->AddObserver( SVTK::PanDownEvent, EventCallbackCommand, Priority );
1513     theInteractor->AddObserver( SVTK::ZoomInEvent, EventCallbackCommand, Priority );
1514     theInteractor->AddObserver( SVTK::ZoomOutEvent, EventCallbackCommand, Priority );
1515     theInteractor->AddObserver( SVTK::RotateLeftEvent, EventCallbackCommand, Priority );
1516     theInteractor->AddObserver( SVTK::RotateRightEvent, EventCallbackCommand, Priority );
1517     theInteractor->AddObserver( SVTK::RotateUpEvent, EventCallbackCommand, Priority );
1518     theInteractor->AddObserver( SVTK::RotateDownEvent, EventCallbackCommand, Priority );
1519     theInteractor->AddObserver( SVTK::PlusSpeedIncrementEvent, EventCallbackCommand, Priority );
1520     theInteractor->AddObserver( SVTK::MinusSpeedIncrementEvent, EventCallbackCommand, Priority );
1521     theInteractor->AddObserver( SVTK::SetSpeedIncrementEvent, EventCallbackCommand, Priority );
1522
1523     theInteractor->AddObserver( SVTK::SetSMDecreaseSpeedEvent, EventCallbackCommand, Priority );
1524     theInteractor->AddObserver( SVTK::SetSMIncreaseSpeedEvent, EventCallbackCommand, Priority );
1525     theInteractor->AddObserver( SVTK::SetSMDominantCombinedSwitchEvent, EventCallbackCommand, Priority );
1526
1527     theInteractor->AddObserver( SVTK::StartZoom, EventCallbackCommand, Priority );
1528     theInteractor->AddObserver( SVTK::StartPan, EventCallbackCommand, Priority );
1529     theInteractor->AddObserver( SVTK::StartRotate, EventCallbackCommand, Priority );
1530     theInteractor->AddObserver( SVTK::StartGlobalPan, EventCallbackCommand, Priority );
1531     theInteractor->AddObserver( SVTK::StartFitArea, EventCallbackCommand, Priority );
1532
1533     theInteractor->AddObserver( SVTK::SetRotateGravity, EventCallbackCommand, Priority );
1534     theInteractor->AddObserver( SVTK::StartPointSelection, EventCallbackCommand, Priority );
1535
1536     theInteractor->AddObserver( SVTK::ChangeRotationPoint, EventCallbackCommand, Priority );
1537
1538     theInteractor->AddObserver( SVTK::SetFocalPointGravity, EventCallbackCommand, Priority );
1539     theInteractor->AddObserver( SVTK::StartFocalPointSelection, EventCallbackCommand, Priority );
1540     theInteractor->AddObserver( SVTK::SetFocalPointSelected, EventCallbackCommand, Priority );
1541   }
1542 }
1543
1544 /*!
1545   To implement cached rendering
1546 */
1547 void SVTK_InteractorStyle::OnTimer()
1548 {
1549   //vtkInteractorStyle::OnTimer();
1550   this->Interactor->Render();
1551   // check if bounding box was changed
1552   if ( GetCurrentRenderer() )
1553   {
1554     double aCurrBBCenter[3];
1555     if ( ComputeBBCenter(GetCurrentRenderer(),aCurrBBCenter) )
1556     {
1557       if ( !myBBFirstCheck )
1558       {
1559         if ( fabs(aCurrBBCenter[0]-myBBCenter[0]) > 1e-38 ||
1560              fabs(aCurrBBCenter[1]-myBBCenter[1]) > 1e-38 ||
1561              fabs(aCurrBBCenter[2]-myBBCenter[2]) > 1e-38 ) {
1562           // bounding box was changed => send SVTK::RotationPointChanged event
1563           // invoke event for update coordinates in SVTK_SetRotationPointDlg
1564           InvokeEvent(SVTK::BBCenterChanged,(void*)aCurrBBCenter);
1565           for ( int i =0; i < 3; i++) myBBCenter[i] = aCurrBBCenter[i];
1566         }
1567       }
1568       else
1569       {
1570         for ( int i =0; i < 3; i++) myBBCenter[i] = aCurrBBCenter[i];
1571         myBBFirstCheck = false;
1572       }
1573     }
1574   }
1575 }
1576
1577 /*!
1578   To invoke #vtkRenderWindowInteractor::CreateTimer
1579 */
1580 void SVTK_InteractorStyle::Render()
1581 {
1582   this->Interactor->CreateTimer(VTKI_TIMER_FIRST);
1583 }
1584
1585 void SVTK_InteractorStyle::onSpaceMouseMove( double* data )
1586 {
1587   // general things, do SetCurrentRenderer() within FindPokedRenderer()
1588   int x, y;
1589   GetEventPosition( this->Interactor, x, y ); // current mouse position (from last mouse move event or any other event)
1590   FindPokedRenderer( x, y ); // calls SetCurrentRenderer
1591
1592   IncrementalZoom( (int)data[2] );        // 1. push toward / pull backward = zoom out / zoom in
1593   IncrementalPan(  (int)data[0],  (int)data[1] );// 2. pull up / push down = pan up / down, 3. move left / right = pan left / right
1594   IncrementalRotate( 0,  (int)data[4] );   // 4. twist the control = rotate around Y axis
1595   IncrementalRotate( (int)data[3], 0  );   // 5. tilt the control forward/backward = rotate around X axis (Z axis of local coordinate system of space mouse)
1596 }
1597
1598 void SVTK_InteractorStyle::onSpaceMouseButton( int button )
1599 {
1600   if( mySMDecreaseSpeedBtn == button ) {
1601     ControllerIncrement()->Decrease();
1602   }
1603   if( mySMIncreaseSpeedBtn == button ) {
1604     ControllerIncrement()->Increase();
1605   }
1606   if( mySMDominantCombinedSwitchBtn == button )
1607     DominantCombinedSwitch();
1608 }
1609
1610 void SVTK_InteractorStyle::DominantCombinedSwitch()
1611 {
1612   printf( "\n--DominantCombinedSwitch() NOT IMPLEMENTED--\n" );
1613 }
1614
1615 /*!
1616   Draws rectangle by starting and current points
1617 */
1618 void SVTK_InteractorStyle::drawRect()
1619 {
1620   if ( !myRectBand )
1621     myRectBand = new QtxRectRubberBand( GetRenderWidget() );
1622
1623   myRectBand->setUpdatesEnabled ( false );
1624   QRect aRect = SUIT_Tools::makeRect(myPoint.x(), myPoint.y(), myOtherPoint.x(), myOtherPoint.y());
1625   myRectBand->initGeometry( aRect );
1626
1627   if ( !myRectBand->isVisible() )
1628     myRectBand->show();
1629
1630   myRectBand->setUpdatesEnabled ( true );
1631 }
1632
1633 /*!
1634   \brief Delete rubber band on the end on the dragging operation.
1635 */
1636 void SVTK_InteractorStyle::endDrawRect()
1637 {
1638   if ( myRectBand ) {
1639     myRectBand->clearGeometry();
1640     myRectBand->hide();
1641   }
1642 }
1643
1644 bool isIntersect( const QPoint& theStart1, const QPoint& theEnd1,
1645                   const QPoint& theStart2, const QPoint& theEnd2 )
1646 {
1647   if ( ( theStart1 == theStart2 && theEnd1 == theEnd2 ) ||
1648        ( theStart1 == theEnd2 && theEnd1 == theStart2 ) )
1649     return true;
1650
1651   if ( theStart1 == theStart2 || theStart2 == theEnd1 ||
1652       theStart1 == theEnd2 || theEnd1 == theEnd2 )
1653     return false;
1654
1655   double x11 = theStart1.x() * 1.0;
1656   double x12 = theEnd1.x() * 1.0;
1657   double y11 = theStart1.y() * 1.0;
1658   double y12 = theEnd1.y() * 1.0;
1659
1660   double x21 = theStart2.x() * 1.0;
1661   double x22 = theEnd2.x() * 1.0;
1662   double y21 = theStart2.y() * 1.0;
1663   double y22 = theEnd2.y() * 1.0;
1664
1665   double k1 = x12 == x11 ? 0 : ( y12 - y11 ) / ( x12 - x11 );
1666   double k2 = x22 == x21 ? 0 : ( y22 - y21 ) / ( x22 - x21 );
1667
1668   double b1 = y11 - k1 * x11;
1669   double b2 = y21 - k2 * x21;
1670
1671   if ( k1 == k2 )
1672   {
1673     if ( b1 != b2 )
1674       return false;
1675     else
1676       return !( ( qMax( x11, x12 ) <= qMin( x21, x22 ) ||
1677                   qMin( x11, x12 ) >= qMax( x21, x22 ) ) &&
1678                 ( qMax( y11, y12 ) <= qMin( y21, y22 ) ||
1679                   qMin( y11, y12 ) >= qMax( y21, y22 ) ) );
1680   }
1681   else
1682   {
1683     double x0 = ( b2 - b1 ) / ( k1 - k2 );
1684     double y0 = ( k1 * b2 - k2 * b1 ) / ( k1 - k2 );
1685
1686     if ( qMin( x11, x12 ) < x0 && x0 < qMax( x11, x12 ) &&
1687          qMin( y11, y12 ) < y0 && y0 < qMax( y11, y12 ) &&
1688          qMin( x21, x22 ) < x0 && x0 < qMax( x21, x22 ) &&
1689          qMin( y21, y22 ) < y0 && y0 < qMax( y21, y22 ) )
1690       return true;
1691   }
1692   return false;
1693 }
1694
1695 bool isValid( const QPolygon* thePoints, const QPoint& theCurrent )
1696 {
1697   if ( !thePoints->count() )
1698     return true;
1699
1700   if ( thePoints->count() == 1 && thePoints->point( 0 ) == theCurrent )
1701     return false;
1702
1703   const QPoint& aLast = thePoints->point( thePoints->count() - 1 );
1704
1705   if ( aLast == theCurrent )
1706     return true;
1707
1708   bool res = true;
1709   for ( uint i = 0; i < thePoints->count() - 1 && res; i++ )
1710   {
1711     const QPoint& aStart = thePoints->point( i );
1712     const QPoint& anEnd  = thePoints->point( i + 1 );
1713     res = !isIntersect( aStart, anEnd, theCurrent, aLast );
1714   }
1715   return res;
1716 }
1717
1718 /*!
1719   Draws polygon
1720 */
1721 void SVTK_InteractorStyle::drawPolygon()
1722 {
1723   QSize aToler( 5, 5 );
1724   if ( !myPolygonBand ) {
1725     myPolygonBand = new QtxPolyRubberBand( GetRenderWidget() );
1726     QPalette palette;
1727     palette.setColor( myPolygonBand->foregroundRole(), Qt::white );
1728     myPolygonBand->setPalette( palette );
1729     myPolygonPoints.append( QPoint( myPoint.x(), myPoint.y() ) );
1730   }
1731   myPolygonBand->hide();
1732
1733   bool closed = false;
1734   bool valid = GetRenderWidget()->rect().contains( QPoint( myOtherPoint.x(), myOtherPoint.y() ) );
1735   if ( !myPolygonPoints.at(0).isNull() )
1736   {
1737     QRect aRect( myPolygonPoints.at(0).x() - aToler.width(), myPolygonPoints.at(0).y() - aToler.height(),
1738                  2 * aToler.width(), 2 * aToler.height() );
1739     closed = aRect.contains( QPoint( myOtherPoint.x(), myOtherPoint.y() ) );
1740   }
1741
1742   QPolygon* points = new QPolygon( myPolygonPoints );
1743   valid = valid && isValid( points, QPoint( myOtherPoint.x(), myOtherPoint.y() ) );
1744   myPoligonState = valid ? InProcess : NotValid;
1745   delete points;
1746   if ( closed && !valid )
1747     closed = false;
1748
1749   if ( closed && myPolygonPoints.size() > 2 ) {
1750     GetRenderWidget()->setCursor( Qt::CrossCursor );
1751     myPoligonState = Closed;
1752   }
1753   else if ( valid )
1754     GetRenderWidget()->setCursor( Qt::PointingHandCursor );
1755   else
1756     GetRenderWidget()->setCursor( Qt::ForbiddenCursor );
1757
1758   myPolygonPoints.append( QPoint( myOtherPoint.x(), myOtherPoint.y() ) );
1759
1760   QPolygon aPolygon( myPolygonPoints );
1761   myPolygonBand->initGeometry( aPolygon );
1762   myPolygonBand->setVisible( true );
1763
1764   if ( myPolygonPoints.size() > 1 ) {
1765     myPolygonPoints.remove( myPolygonPoints.size() - 1 );
1766   }
1767 }
1768
1769 /*!
1770   \brief Delete rubber band on the end on the dragging operation.
1771 */
1772 void SVTK_InteractorStyle::endDrawPolygon()
1773 {
1774   if ( myPolygonBand ) myPolygonBand->hide();
1775
1776   delete myPolygonBand;
1777   myPolygonBand = 0;
1778
1779   myPolygonPoints.clear();
1780 }
1781
1782 /*!
1783   Main process event method (reimplemented from #vtkInteractorStyle)
1784 */
1785 void SVTK_InteractorStyle::ProcessEvents( vtkObject* object,
1786                                           unsigned long event,
1787                                           void* clientData,
1788                                           void* callData )
1789 {
1790   if ( clientData ) {
1791     vtkObject* anObject = reinterpret_cast<vtkObject*>( clientData );
1792     SVTK_InteractorStyle* self = dynamic_cast<SVTK_InteractorStyle*>( anObject );
1793     int aSpeedIncrement=self->ControllerIncrement()->Current();
1794     double aCenter[3];
1795     double* aSelectedPoint;
1796     if ( self ) {
1797       switch ( event ) {
1798       case SVTK::SpaceMouseMoveEvent :
1799         self->onSpaceMouseMove( (double*)callData );
1800         return;
1801       case SVTK::SpaceMouseButtonEvent :
1802         self->onSpaceMouseButton( *((int*)callData) );
1803         return;
1804       case SVTK::PanLeftEvent:
1805         self->IncrementalPan(-aSpeedIncrement, 0);
1806         return;
1807       case SVTK::PanRightEvent:
1808         self->IncrementalPan(aSpeedIncrement, 0);
1809         return;
1810       case SVTK::PanUpEvent:
1811         self->IncrementalPan(0, aSpeedIncrement);
1812         return;
1813       case SVTK::PanDownEvent:
1814         self->IncrementalPan(0, -aSpeedIncrement);
1815         return;
1816       case SVTK::ZoomInEvent:
1817         self->IncrementalZoom(aSpeedIncrement);
1818         return;
1819       case SVTK::ZoomOutEvent:
1820         self->IncrementalZoom(-aSpeedIncrement);
1821         return;
1822       case SVTK::RotateLeftEvent:
1823         self->IncrementalRotate(-aSpeedIncrement, 0);
1824         return;
1825       case SVTK::RotateRightEvent:
1826         self->IncrementalRotate(aSpeedIncrement, 0);
1827         return;
1828       case SVTK::RotateUpEvent:
1829         self->IncrementalRotate(0, -aSpeedIncrement);
1830         return;
1831       case SVTK::RotateDownEvent:
1832         self->IncrementalRotate(0, aSpeedIncrement);
1833         return;
1834       case SVTK::PlusSpeedIncrementEvent:
1835         self->ControllerIncrement()->Increase();
1836         return;
1837       case SVTK::MinusSpeedIncrementEvent:
1838         self->ControllerIncrement()->Decrease();
1839         return;
1840       case SVTK::SetSpeedIncrementEvent:
1841         self->ControllerIncrement()->SetStartValue(*((int*)callData));
1842         return;
1843
1844       case SVTK::SetSMDecreaseSpeedEvent:
1845         self->mySMDecreaseSpeedBtn = *((int*)callData);
1846         return;
1847       case SVTK::SetSMIncreaseSpeedEvent:
1848         self->mySMIncreaseSpeedBtn = *((int*)callData);
1849         return;
1850       case SVTK::SetSMDominantCombinedSwitchEvent:
1851         self->mySMDominantCombinedSwitchBtn = *((int*)callData);
1852         return;
1853
1854       case SVTK::StartZoom:
1855         self->startZoom();
1856         return;
1857       case SVTK::StartPan:
1858         self->startPan();
1859         return;
1860       case SVTK::StartRotate:
1861         self->startRotate();
1862         return;
1863       case SVTK::StartGlobalPan:
1864         self->startGlobalPan();
1865         return;
1866       case SVTK::StartFitArea:
1867         self->startFitArea();
1868         return;
1869
1870       case SVTK::SetRotateGravity:
1871         if ( self->myCurrRotationPointType == SVTK::StartPointSelection )
1872         {
1873           self->myHighlightSelectionPointActor->SetVisibility( false );
1874           if( self->GetCurrentRenderer() != NULL )
1875             self->GetCurrentRenderer()->RemoveActor( self->myHighlightSelectionPointActor.GetPointer() );
1876           self->GetRenderWidget()->setCursor(self->myDefCursor);
1877         }
1878         self->myPrevRotationPointType = self->myCurrRotationPointType;
1879         self->myCurrRotationPointType = SVTK::SetRotateGravity;
1880         if ( ComputeBBCenter(self->GetCurrentRenderer(),aCenter) )
1881           // invoke event for update coordinates in SVTK_SetRotationPointDlg
1882           self->InvokeEvent(SVTK::BBCenterChanged,(void*)aCenter);
1883         return;
1884       case SVTK::StartPointSelection:
1885         self->startPointSelection();
1886         return;
1887
1888       case SVTK::ChangeRotationPoint:
1889         if ( self->myCurrRotationPointType == SVTK::StartPointSelection )
1890         {
1891           self->myHighlightSelectionPointActor->SetVisibility( false );
1892           if( self->GetCurrentRenderer() != NULL )
1893             self->GetCurrentRenderer()->RemoveActor( self->myHighlightSelectionPointActor.GetPointer() );
1894           self->GetRenderWidget()->setCursor(self->myDefCursor);
1895         }
1896         self->myPrevRotationPointType = self->myCurrRotationPointType;
1897         self->myCurrRotationPointType = SVTK::SetRotateSelected;
1898         aSelectedPoint = (double*)callData;
1899         self->myRotationPointX = aSelectedPoint[0];
1900         self->myRotationPointY = aSelectedPoint[1];
1901         self->myRotationPointZ = aSelectedPoint[2];
1902         return;
1903
1904       case SVTK::SetFocalPointGravity:
1905         if ( self->myCurrFocalPointType == SVTK::StartPointSelection )
1906         {
1907           self->myHighlightSelectionPointActor->SetVisibility( false );
1908           if( self->GetCurrentRenderer() != NULL )
1909             self->GetCurrentRenderer()->RemoveActor( self->myHighlightSelectionPointActor.GetPointer() );
1910           self->GetRenderWidget()->setCursor(self->myDefCursor);
1911         }
1912         self->myCurrFocalPointType = SVTK::SetFocalPointGravity;
1913         if ( ComputeBBCenter(self->GetCurrentRenderer(),aCenter) ) {
1914           // invoke event for update coordinates in SVTK_ViewParameterDlg
1915           self->InvokeEvent(SVTK::FocalPointChanged,(void*)aCenter);
1916         }
1917         return;
1918       case SVTK::StartFocalPointSelection:
1919         self->startFocalPointSelection();
1920         return;
1921
1922       case SVTK::SetFocalPointSelected:
1923         if ( self->myCurrFocalPointType == SVTK::StartFocalPointSelection )
1924         {
1925           self->myHighlightSelectionPointActor->SetVisibility( false );
1926           if( self->GetCurrentRenderer() != NULL )
1927             self->GetCurrentRenderer()->RemoveActor( self->myHighlightSelectionPointActor.GetPointer() );
1928           self->GetRenderWidget()->setCursor(self->myDefCursor);
1929         }
1930         self->myPrevFocalPointType = self->myCurrFocalPointType;
1931         self->myCurrFocalPointType = SVTK::SetFocalPointSelected;
1932         return;
1933       }
1934     }
1935   }
1936
1937   Superclass::ProcessEvents( object, event, clientData, callData );
1938 }
1939
1940 /*!
1941   To handle keyboard event (reimplemented from #vtkInteractorStyle)
1942 */
1943 void SVTK_InteractorStyle::OnChar()
1944 {
1945   char key = GetInteractor()->GetKeyCode();
1946   switch ( key ) {
1947   case '+': ControllerIncrement()->Increase(); break;
1948   case '-': ControllerIncrement()->Decrease(); break;
1949   }
1950 }
1951
1952 /*!
1953   Redefined vtkInteractorStyle::OnKeyDown
1954 */
1955 void SVTK_InteractorStyle::OnKeyDown()
1956 {
1957   bool bInvokeSuperclass=myControllerOnKeyDown->OnKeyDown(this);
1958   if (bInvokeSuperclass){
1959     Superclass::OnKeyDown();
1960   }
1961 }
1962
1963 /*!
1964   Provide instructions for Picking
1965 */
1966 void SVTK_InteractorStyle::ActionPicking()
1967 {
1968   int x, y;
1969   Interactor->GetEventPosition( x, y );
1970   FindPokedRenderer( x, y );
1971
1972   myOtherPoint = myPoint = QPoint(x, y);
1973
1974   startOperation(VTK_INTERACTOR_STYLE_CAMERA_SELECT);
1975   onFinishOperation();
1976   startOperation(VTK_INTERACTOR_STYLE_CAMERA_NONE);
1977 }
1978
1979 /*!
1980   To set current increment controller
1981 */
1982 void SVTK_InteractorStyle::SetControllerOnKeyDown(SVTK_ControllerOnKeyDown* theController)
1983 {
1984   myControllerOnKeyDown=theController;
1985 }
1986
1987 /*!
1988   To get current OnKeyDown controller
1989 */
1990 SVTK_ControllerOnKeyDown* SVTK_InteractorStyle::ControllerOnKeyDown()
1991 {
1992   return myControllerOnKeyDown.GetPointer();
1993 }
1994
1995 /*!
1996   To set current increment controller
1997 */
1998 void SVTK_InteractorStyle::SetControllerIncrement(SVTK_ControllerIncrement* theController)
1999 {
2000   myControllerIncrement=theController;
2001 }
2002
2003 /*!
2004   To modify current increment controller
2005 */
2006 void SVTK_InteractorStyle::SetIncrementSpeed(const int theValue, const int theMode)
2007 {
2008   SVTK_ControllerIncrement* c = 0;
2009   switch (theMode) {
2010   case 0: c = SVTK_ControllerIncrement::New(); break;
2011   case 1: c = SVTK_GeomControllerIncrement::New(); break;
2012   }
2013   c->SetStartValue(theValue);
2014
2015   SetControllerIncrement(c);
2016   c->Delete();
2017 }
2018
2019 /*!
2020   To get current increment controller
2021 */
2022 SVTK_ControllerIncrement* SVTK_InteractorStyle::ControllerIncrement()
2023 {
2024   return myControllerIncrement.GetPointer();
2025 }
2026
2027 vtkStandardNewMacro(SVTK_ControllerIncrement);
2028 SVTK_ControllerIncrement::SVTK_ControllerIncrement()
2029 {
2030   myIncrement=10;
2031 }
2032 SVTK_ControllerIncrement::~SVTK_ControllerIncrement()
2033 {
2034 }
2035 void SVTK_ControllerIncrement::SetStartValue(const int theValue)
2036 {
2037   myIncrement=theValue;
2038 }
2039 int SVTK_ControllerIncrement::Current()const
2040 {
2041   return myIncrement;
2042 }
2043 int SVTK_ControllerIncrement::Increase()
2044 {
2045   ++myIncrement;
2046   return myIncrement;
2047 }
2048 int SVTK_ControllerIncrement::Decrease()
2049 {
2050   if (myIncrement>1){
2051     --myIncrement;
2052   }
2053   return myIncrement;
2054 }
2055
2056 vtkStandardNewMacro(SVTK_GeomControllerIncrement);
2057 SVTK_GeomControllerIncrement::SVTK_GeomControllerIncrement()
2058 {
2059 }
2060 SVTK_GeomControllerIncrement::~SVTK_GeomControllerIncrement()
2061 {
2062 }
2063 int SVTK_GeomControllerIncrement::Increase()
2064 {
2065   myIncrement*=2;
2066   return myIncrement;
2067 }
2068 int SVTK_GeomControllerIncrement::Decrease()
2069 {
2070   myIncrement/=2;
2071   if (myIncrement<1){
2072     myIncrement=1;
2073   }
2074   return myIncrement;
2075 }
2076
2077 vtkStandardNewMacro(SVTK_ControllerOnKeyDown);
2078
2079 /*!
2080   Constructor
2081 */
2082 SVTK_ControllerOnKeyDown::SVTK_ControllerOnKeyDown()
2083 {
2084 }
2085
2086 /*!
2087   Destructor
2088 */
2089 SVTK_ControllerOnKeyDown::~SVTK_ControllerOnKeyDown()
2090 {
2091 }
2092
2093 bool SVTK_ControllerOnKeyDown::OnKeyDown(vtkInteractorStyle* theIS)
2094 {
2095   return true;
2096 }