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bug #155: create profile of splines
[modules/hydro.git] / src / HYDROCurveCreator / CurveCreator_Widget.cxx
index 5df7014e834f9399a68e66b8e35f477818c4b016..ea0b5098a0cdff39cf4e25d4d25090589c7a3449 100644 (file)
@@ -25,6 +25,8 @@
 //#include "CurveCreator_NewPointDlg.h"
 #include "CurveCreator_NewSectionDlg.h"
 #include "CurveCreator_Utils.h"
+#include "CurveCreator_UtilsICurve.hxx"
+#include "CurveCreator_TableView.h"
 
 #include <SUIT_Session.h>
 #include <SUIT_Desktop.h>
@@ -34,6 +36,7 @@
 #include <OCCViewer_ViewWindow.h>
 #include <OCCViewer_ViewManager.h>
 #include <OCCViewer_ViewPort3d.h>
+#include "OCCViewer_Utilities.h"
 
 #include <BRep_Tool.hxx>
 #include <TopoDS.hxx>
 #include <AIS_ListOfInteractive.hxx>
 #include <AIS_ListIteratorOfListOfInteractive.hxx>
 #include <AIS_Shape.hxx>
-#include <AIS_Point.hxx>
-#include <AIS_Line.hxx>
+#include <AIS_LocalContext.hxx>
 #include <Geom_Point.hxx>
 #include <Geom_BSplineCurve.hxx>
 #include <Geom_Line.hxx>
-#include <StdSelect_BRepOwner.hxx>
 
 #include <QHBoxLayout>
 #include <QVBoxLayout>
 #include <QMouseEvent>
 #include <QApplication>
 #include <QTableWidget>
+#include <QTime>
+
+#define MEASURE_TIME
+
+#ifdef MEASURE_TIME
+
+  #define START_MEASURE_TIME \
+    QTime aTimer;            \
+    aTimer.start();          \
+
+  #define END_MEASURE_TIME( theMsg )                      \
+    double aTime = aTimer.elapsed() * 0.001;              \
+    FILE* aFile = fopen( "performance", "a" );            \
+    fprintf( aFile, "%s = %.3lf sec\n", theMsg, aTime );  \
+    fclose( aFile );                                      \
+
+#else
+
+  #define START_MEASURE_TIME
+  #define END_MEASURE_TIME( theMsg )
+
+#endif
+
+
+
 
-const double LOCAL_SELECTION_TOLERANCE = 0.0001;
-const int SECTION_NAME_COLUMN_WIDTH = 75;
-const int POINT_INDEX_COLUMN_WIDTH = 40;
 
-const int SCENE_PIXEL_TOLERANCE = 10;
 
 CurveCreator_Widget::CurveCreator_Widget(QWidget* parent,
                                          CurveCreator_ICurve *theCurve,
-                                         Qt::WindowFlags fl)
+                                         Qt::WindowFlags fl,
+                                         int theLocalPointRowLimit )
 : QWidget(parent), myNewSectionEditor(NULL), myCurve(theCurve), mySection(0),
   myDragStarted( false ), myDragInteractionStyle( SUIT_ViewModel::STANDARD ),
-  myOCCViewer( 0 )
+  myOCCViewer( 0 ), myLocalPointRowLimit( theLocalPointRowLimit )
 {
   myNewSectionEditor = new CurveCreator_NewSectionDlg( this );
   myNewSectionEditor->hide();
@@ -95,15 +118,7 @@ CurveCreator_Widget::CurveCreator_Widget(QWidget* parent,
   connect( mySectionView, SIGNAL(sectionEntered(int)), this, SLOT(onEditSection(int)) );
   connect( mySectionView, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(onContextMenu(QPoint)) );
 
-  myLocalPointView = new QTableWidget();
-  myLocalPointView->setVisible( false );
-  myLocalPointView->setColumnCount( 4 );
-  myLocalPointView->setColumnWidth( 0, SECTION_NAME_COLUMN_WIDTH );
-  myLocalPointView->setColumnWidth( 1, POINT_INDEX_COLUMN_WIDTH );
-  QStringList aLabels;
-  //aLabels << tr( "SECTION_LABEL" ) << tr( "IDENTIFIER_LABEL" ) << tr( "X_POSITION_LBL" ) << tr( "Y_POSITION_LBL" );
-  aLabels << tr( "Section" ) << "Index" << tr( "X" ) << tr( "Y" );
-  myLocalPointView->setHorizontalHeaderLabels( aLabels );
+  myLocalPointView = new CurveCreator_TableView( myCurve, this );
   connect( myLocalPointView, SIGNAL( cellChanged( int, int ) ),
            this, SLOT( onCellChanged( int, int ) ) );
 
@@ -184,21 +199,22 @@ CurveCreator_Widget::CurveCreator_Widget(QWidget* parent,
                         QKeySequence(Qt::ControlModifier|Qt::Key_Delete ) );
   connect(anAct, SIGNAL(triggered()), this, SLOT(onRemove()) );
   aTB->addAction(anAct);
-  aTB->addSeparator();
+  // TODO join
+  //aTB->addSeparator();
 
-  anAct = createAction( JOIN_ID, tr("JOIN"), aJoinPixmap, tr("JOIN_TLT"), 
-                        QKeySequence(Qt::ControlModifier|Qt::Key_Plus ) );
-  connect( anAct, SIGNAL(triggered()), this, SLOT(onJoin()) );
-  aTB->addAction(anAct);
-  aTB->addSeparator();
+  //anAct = createAction( JOIN_ID, tr("JOIN"), aJoinPixmap, tr("JOIN_TLT"), 
+  //                      QKeySequence(Qt::ControlModifier|Qt::Key_Plus ) );
+  //connect( anAct, SIGNAL(triggered()), this, SLOT(onJoin()) );
+  //aTB->addAction(anAct);
 
   anAct = createAction( CLEAR_ALL_ID, tr("CLEAR_ALL"), QPixmap(), tr("CLEAR_ALL_TLT"), 
                         QKeySequence(Qt::ControlModifier | Qt::ShiftModifier | Qt::Key_Delete ) );
   connect( anAct, SIGNAL(triggered()), this, SLOT( onClearAll()) );
 
-  anAct = createAction( JOIN_ALL_ID, tr("JOIN_ALL"), QPixmap(), tr("JOIN_ALL_TLT"), 
-                        QKeySequence(Qt::ControlModifier | Qt::ShiftModifier | Qt::Key_Plus ) );
-  connect( anAct, SIGNAL(triggered()), this, SLOT(onJoinAll()) );
+  // TODO join
+  //anAct = createAction( JOIN_ALL_ID, tr("JOIN_ALL"), QPixmap(), tr("JOIN_ALL_TLT"), 
+  //                      QKeySequence(Qt::ControlModifier | Qt::ShiftModifier | Qt::Key_Plus ) );
+  //connect( anAct, SIGNAL(triggered()), this, SLOT(onJoinAll()) );
 
   QVBoxLayout* aSectLayout = new QVBoxLayout();
   aSectLayout->setMargin( 5 );
@@ -213,7 +229,9 @@ CurveCreator_Widget::CurveCreator_Widget(QWidget* parent,
 //    aLay->addLayout(aNameLayout);
   aLay->addWidget(aSectionGroup);
   setLayout(aLay);
-  onSelectionChanged();
+
+  updateActionsStates();
+  updateUndoRedo();
 }
 
 /**
@@ -233,6 +251,10 @@ void CurveCreator_Widget::setOCCViewer( OCCViewer_Viewer* theViewer )
            this, SLOT( onMouseRelease( SUIT_ViewWindow*, QMouseEvent* ) ) );
     disconnect( aViewManager, SIGNAL( mouseMove( SUIT_ViewWindow*, QMouseEvent* ) ),
            this, SLOT( onMouseMove( SUIT_ViewWindow*, QMouseEvent* ) ) );
+    disconnect( aViewManager, SIGNAL( lastViewClosed( SUIT_ViewManager* ) ),
+           this, SLOT( onLastViewClosed( SUIT_ViewManager* ) ) );
+    // restore normal mode in the viewer
+    OCCViewer_Utilities::setViewer2DMode( myOCCViewer, OCCViewer_ViewWindow::No2dMode );
     // all local contexts should be closed if the viewer is not more used
     setLocalPointContext( false, true );
   }
@@ -247,6 +269,9 @@ void CurveCreator_Widget::setOCCViewer( OCCViewer_Viewer* theViewer )
            this, SLOT( onMouseRelease( SUIT_ViewWindow*, QMouseEvent* ) ) );
     connect( aViewManager, SIGNAL( mouseMove( SUIT_ViewWindow*, QMouseEvent* ) ),
            this, SLOT( onMouseMove( SUIT_ViewWindow*, QMouseEvent* ) ) );
+    connect( aViewManager, SIGNAL( lastViewClosed( SUIT_ViewManager* ) ),
+           this, SLOT( onLastViewClosed( SUIT_ViewManager* ) ) );
+    OCCViewer_Utilities::setViewer2DMode( myOCCViewer, OCCViewer_ViewWindow::XYPlane );
   }
 }
 
@@ -258,40 +283,80 @@ OCCViewer_Viewer* CurveCreator_Widget::getOCCViewer()
   return myOCCViewer;
 }
 
+/**
+ * Returns OCC viewer context
+ */
+Handle(AIS_InteractiveContext) CurveCreator_Widget::getAISContext()
+{
+  Handle(AIS_InteractiveContext) aContext;
+  OCCViewer_Viewer* aViewer = getOCCViewer();
+  if ( aViewer )
+    aContext = aViewer->getAISContext();
+
+  return aContext;
+}
+
+/**
+ * Returns OCC viewer view port
+ */
+OCCViewer_ViewPort3d* CurveCreator_Widget::getViewPort()
+{
+  OCCViewer_ViewPort3d* aViewPort = 0;
+  OCCViewer_Viewer* aViewer = getOCCViewer();
+  if ( aViewer )
+    aViewPort = ((OCCViewer_ViewWindow*)aViewer->getViewManager()->getActiveView())->getViewPort();
+    
+  return aViewPort;
+}
+
+/**
+ * Set interaction style in the OCC viewer
+ * \param theStyle a new style
+ * \return the previous style
+ */
+int CurveCreator_Widget::changeInteractionStyle( int theStyle )
+{
+  OCCViewer_Viewer* aViewer = getOCCViewer();
+  if ( !aViewer )
+    return -1;
+
+  int aPrevStyle = aViewer->interactionStyle();
+  aViewer->setInteractionStyle( theStyle );
+
+  return aPrevStyle;
+}
+
 //=======================================================================
-// function: getUniqSectionName
-// purpose: return unique section name
+// function: reset
+// purpose: reset the widget viewer, close local context, clear selection
 //=======================================================================
-std::string CurveCreator_Widget::getUniqSectionName( CurveCreator_ICurve* theCurve ) const
-{
-  for( int i = 0 ; i < 1000000 ; i++ ){
-      char aBuffer[255];
-      sprintf( aBuffer, "Section_%d", i+1 );
-      std::string aName(aBuffer);
-      int j;
-      for( j = 0 ; j < theCurve->getNbSections() ; j++ ){
-        if( theCurve->getSectionName(j) == aName )
-            break;
-      }
-      if( j == theCurve->getNbSections() )
-          return aName;
-  }
-  return "";
+void CurveCreator_Widget::reset()
+{
 }
 
 void CurveCreator_Widget::setCurve( CurveCreator_ICurve* theCurve )
 {
   myCurve = theCurve;
-  mySectionView->setCurve(myCurve);
-  onSelectionChanged();
+  mySectionView->setCurve( myCurve );
+  myLocalPointView->setCurve( myCurve );
+  updateActionsStates();
   updateUndoRedo();
 }
 
 void CurveCreator_Widget::onSelectionChanged()
+{
+  updateActionsStates();
+  updateUndoRedo();
+  emit selectionChanged();
+}
+
+void CurveCreator_Widget::updateActionsStates()
 {
   QList<ActionId> anEnabledAct;
   if( myCurve ){
     anEnabledAct << NEW_SECTION_ID << MODIFICATION_MODE_ID;
+    if ( removeEnabled() )
+      anEnabledAct << REMOVE_ID;
     QList<int> aSelSections = mySectionView->getSelectedSections();
     QList< QPair< int, int > > aSelPoints = mySectionView->getSelectedPoints();
     CurveCreator_TreeView::SelectionType aSelType = mySectionView->getSelectionType();
@@ -305,7 +370,6 @@ void CurveCreator_Widget::onSelectionChanged()
       }*/
       if( aSelSections.size() == 1 ){
         anEnabledAct << ADDITION_MODE_ID << DETECTION_MODE_ID;
-        anEnabledAct << REMOVE_ID;
       }
       switch ( getActionMode() ) {
         case AdditionMode: {
@@ -323,11 +387,12 @@ void CurveCreator_Widget::onSelectionChanged()
           int aSectCnt = myCurve->getNbSections();
           if( aSectCnt > 0 )
             anEnabledAct << CLEAR_ALL_ID;
-          if( aSectCnt > 1 )
-            anEnabledAct << JOIN_ALL_ID;
-          if( aSelSections.size() > 1 ){
-            anEnabledAct << JOIN_ID;
-          }
+          // TODO
+          //if( aSectCnt > 1 )
+          //  anEnabledAct << JOIN_ALL_ID;
+          //if( aSelSections.size() > 1 ){
+          //  anEnabledAct << JOIN_ID;
+          //}
         }
         break;
         case DetectionMode: {
@@ -366,9 +431,10 @@ void CurveCreator_Widget::onSelectionChanged()
     if( (myCurve->getNbSections() + myCurve->getNbPoints()) > 0 ){
       anEnabledAct << REMOVE_ALL_ID;
     }*/
-    if( myCurve->getNbSections() > 1 ){
-      anEnabledAct << JOIN_ALL_ID;
-    }
+    // TODO
+    //if( myCurve->getNbSections() > 1 ){
+    //  anEnabledAct << JOIN_ALL_ID;
+    //}
   }
   QList<ActionId> anIds = myActionMap.keys();
   for( int i = 0 ; i < anIds.size() ; i++ ){
@@ -381,32 +447,16 @@ void CurveCreator_Widget::onSelectionChanged()
       }
     }
   }
-  updateUndoRedo();
-  emit selectionChanged();
 }
 
 void CurveCreator_Widget::onAdditionMode(bool checked)
 {
-  OCCViewer_Viewer* aViewer = getOCCViewer();
-  if( !myCurve || !aViewer )
+  if (!checked)
     return;
 
-  Handle(AIS_InteractiveContext) aContext = aViewer->getAISContext();
-  OCCViewer_ViewManager* aViewManager = dynamic_cast<OCCViewer_ViewManager*>
-                                                    (aViewer->getViewManager());
-//  if ( aViewManager->getType() == OCCViewer_Viewer::Type() ) {
-  if( aViewer ) {
-    if (checked) {
-/*      myGuiState = aViewWindow->saveState();
-      aViewer->enableMultiselection(false);
-      aViewer->enableSelection(false);*/
-    } else {
-/*      aViewer->enableMultiselection(true);
-      aViewer->enableSelection(true);
-      aViewWindow->restoreState( myGuiState );*/
-      return;
-    }
-  }
+  Handle(AIS_InteractiveContext) aContext = getAISContext();
+  if( !myCurve || aContext.IsNull() )
+    return;
 
   mySection= -1;
   myPointNum = -1;
@@ -462,7 +512,8 @@ void CurveCreator_Widget::onModeChanged(bool checked)
         break;
     }
   }
-  onSelectionChanged();
+  updateActionsStates();
+  updateUndoRedo();
   setLocalPointContext( aMode == ModificationMode, true );
 }
 
@@ -480,7 +531,7 @@ void CurveCreator_Widget::onAddNewPoint(const CurveCreator::Coordinates& theCoor
   int aSection = aSections[0];
   myCurve->addPoints(theCoords, aSection); // add to the end of section
   mySectionView->pointsAdded( aSection, myCurve->getNbPoints( aSection ) );
-  onSelectionChanged();
+  updateActionsStates();
   updateUndoRedo();
 }
 
@@ -490,7 +541,7 @@ void CurveCreator_Widget::onNewSection()
     return;
   myNewSectionEditor->clear();
   myNewSectionEditor->setEditMode(false);
-  QString aSectName = QString( getUniqSectionName(myCurve).c_str() );
+  QString aSectName = QString( CurveCreator_UtilsICurve::getUniqSectionName( myCurve ).c_str() );
   myNewSectionEditor->setSectionParameters(aSectName, true, CurveCreator::Polyline );
   emit subOperationStarted( myNewSectionEditor );
 }
@@ -499,12 +550,13 @@ void CurveCreator_Widget::onAddNewSection()
 {
   if( !myCurve )
     return;
-  myCurve->addSection( myNewSectionEditor->getName().toStdString(), myNewSectionEditor->getSectionType(),
-                      myNewSectionEditor->isClosed() );
+  myCurve->addSection( myNewSectionEditor->getName().toStdString(),
+                       myNewSectionEditor->getSectionType(),
+                       myNewSectionEditor->isClosed() );
   mySectionView->sectionAdded( -1 ); // add a new section to the end of list
-  QString aNewName = QString(getUniqSectionName(myCurve).c_str());
+  QString aNewName = QString( CurveCreator_UtilsICurve::getUniqSectionName( myCurve ).c_str() );
   myNewSectionEditor->setSectionName(aNewName);
-  onSelectionChanged();
+  updateActionsStates();
   updateUndoRedo();
   onCancelSection();
 }
@@ -570,9 +622,14 @@ void CurveCreator_Widget::onModifySection()
   bool isClosed = myNewSectionEditor->isClosed();
   CurveCreator::SectionType aSectType = myNewSectionEditor->getSectionType();
 //  myCurve->startOperation();
-  myCurve->setClosed( isClosed, mySection );
-  myCurve->setSectionName( mySection , aName.toStdString() );
-  myCurve->setSectionType( mySection, aSectType );
+  if( myCurve->getSectionName(mySection) != aName.toStdString() )
+    myCurve->setSectionName( mySection , aName.toStdString() );
+
+  if( myCurve->getSectionType(mySection) != aSectType )
+    myCurve->setSectionType( mySection, aSectType );
+
+  if( myCurve->isClosed(mySection) != isClosed )
+    myCurve->setClosed( mySection, isClosed );
 //  myCurve->finishOperation();
   mySectionView->sectionChanged(mySection);
   updateUndoRedo();
@@ -651,7 +708,7 @@ void CurveCreator_Widget::onClearAll()
     return;
   myCurve->clear();
   mySectionView->reset();
-  onSelectionChanged();
+  updateActionsStates();
   updateUndoRedo();
 }
 
@@ -661,7 +718,7 @@ void CurveCreator_Widget::onJoinAll()
     return;
   myCurve->join();
   mySectionView->reset();
-  onSelectionChanged();
+  updateActionsStates();
   updateUndoRedo();
 }
 
@@ -705,7 +762,7 @@ void CurveCreator_Widget::onCloseSections()
 //  myCurve->startOperation();
   QList<int> aSelSections = mySectionView->getSelectedSections();
   for( int i = 0 ; i < aSelSections.size() ; i++ ){
-    myCurve->setClosed(true, aSelSections[i]);
+    myCurve->setClosed(aSelSections[i], true);
     mySectionView->sectionChanged(aSelSections[i]);
   }
 //  myCurve->finishOperation();
@@ -719,7 +776,7 @@ void CurveCreator_Widget::onUncloseSections()
 //  myCurve->startOperation();
   QList<int> aSelSections = mySectionView->getSelectedSections();
   for( int i = 0 ; i < aSelSections.size() ; i++ ){
-    myCurve->setClosed(false, aSelSections[i]);
+    myCurve->setClosed(aSelSections[i], false);
     mySectionView->sectionChanged(aSelSections[i]);
   }
 //  myCurve->finishOperation();
@@ -730,18 +787,23 @@ void CurveCreator_Widget::onUndo()
 {
     if( !myCurve )
       return;
+
+    CurveCreator_ICurve::SectionToPointList aPoints;
+    startCurveModification( aPoints, false );
     myCurve->undo();
+    finishCurveModification();
     mySectionView->reset();
-    updateUndoRedo();
 }
 
 void CurveCreator_Widget::onRedo()
 {
     if( !myCurve )
       return;
+    CurveCreator_ICurve::SectionToPointList aPoints;
+    startCurveModification( aPoints, false );
     myCurve->redo();
+    finishCurveModification();
     mySectionView->reset();
-    updateUndoRedo();
 }
 
 void CurveCreator_Widget::updateUndoRedo()
@@ -817,6 +879,30 @@ QList< QPair< int, int > > CurveCreator_Widget::getSelectedPoints()
   return mySectionView->getSelectedPoints();
 }
 
+/**
+ * According to the widget state, performs the remove action
+ */
+void CurveCreator_Widget::removeSelected()
+{
+  onRemove();
+}
+
+/**
+ * Checks whether there are some selection to be removed
+ */
+bool CurveCreator_Widget::removeEnabled()
+{
+  bool isEnabled = getActionMode() == ModificationMode;
+  if ( !isEnabled ) {
+    QList<int> aSelSections = mySectionView->getSelectedSections();
+    CurveCreator_TreeView::SelectionType aSelType = mySectionView->getSelectionType();
+    isEnabled = aSelType == CurveCreator_TreeView::ST_SECTIONS &&
+                aSelSections.size() == 1;
+  }
+  return isEnabled;
+}
+
+
 //=================================================================================
 // function : GeometryGUI::onGetCoordsByClick()
 // purpose  : Manage mouse press events in Additon mode
@@ -827,10 +913,9 @@ void CurveCreator_Widget::onGetCoordsByClick( QMouseEvent* pe )
     return;
 
   if ( pe->modifiers() != Qt::ControlModifier ) {
-  OCCViewer_Viewer* aViewer = getOCCViewer();
-  if ( !aViewer )
-    return;
-    Handle(AIS_InteractiveContext) ic = aViewer->getAISContext();
+    Handle(AIS_InteractiveContext) ic = getAISContext();
+    if ( ic.IsNull() )
+      return;
 
     gp_Pnt aPnt;    
 
@@ -850,8 +935,7 @@ void CurveCreator_Widget::onGetCoordsByClick( QMouseEvent* pe )
       aPnt = BRep_Tool::Pnt( TopoDS::Vertex( ic->SelectedShape() ) );
     else*/
     {
-      OCCViewer_ViewPort3d* vp =
-        ((OCCViewer_ViewWindow*)aViewer->getViewManager()->getActiveView())->getViewPort();
+      OCCViewer_ViewPort3d* vp = getViewPort();
       aPnt = CurveCreator_Utils::ConvertClickToPoint( pe->x(), pe->y(), vp->getView() );
     }
     // set the coordinates into dialog
@@ -866,10 +950,11 @@ void CurveCreator_Widget::onGetCoordsByClick( QMouseEvent* pe )
   }
 }
 
-//=================================================================================
-// function : CurveCreator_Widget::onMousePress()
-// purpose  : Manage mouse press events in Modification mode
-//=================================================================================
+/**
+ * Manage mouse press events
+ * \param theWindow an owner of the signal
+ * \param theEvent a mouse event
+ */
 void CurveCreator_Widget::onMousePress( SUIT_ViewWindow*, QMouseEvent* theEvent )
 {
   if ( theEvent->button() != Qt::LeftButton )
@@ -890,19 +975,30 @@ void CurveCreator_Widget::onMousePress( SUIT_ViewWindow*, QMouseEvent* theEvent
   }
 }
 
-//=================================================================================
-// function : HYDROGUI_PolylineOp::onMouseRelease()
-// purpose  : Manage mouse press events in Modification mode
-//=================================================================================
+/**
+ * Manage mouse release events in Modification mode
+ * \param theWindow an owner of the signal
+ * \param theEvent a mouse event
+ */
 void CurveCreator_Widget::onMouseRelease( SUIT_ViewWindow*, QMouseEvent* theEvent )
 {
   if ( getActionMode() != ModificationMode )
     return;
 
   if ( myDragStarted ) {
-    if ( myDragged ) // if the drag of some points has happened, restore the drag selection
-      setSelectedPonts( myDragPoints );
+    bool isDragged = myDragged;
+    CurveCreator_ICurve::SectionToPointList aDraggedPoints;
+    if ( myDragged )
+      aDraggedPoints = myDragPoints;
+
     setDragStarted( false );
+    // if the drag of some points has happened, restore the drag selection
+    if ( aDraggedPoints.size() > 0 )
+    {
+      START_MEASURE_TIME;
+      setSelectedPoints( aDraggedPoints );
+      END_MEASURE_TIME( "drop" );
+    }
   }
   else // check whether the segment is clicked an a new point should be added to the segment
     insertPointToSelectedSegment( theEvent->pos().x(), theEvent->pos().y() );
@@ -911,10 +1007,11 @@ void CurveCreator_Widget::onMouseRelease( SUIT_ViewWindow*, QMouseEvent* theEven
   updateLocalPointView();
 }
 
-//=================================================================================
-// function : GeometryGUI::onMouseMove()
-// purpose  : Manage mouse move events in Modification mode
-//=================================================================================
+/**
+ * Manage mouse move events in Modification mode
+ * \param theWindow an owner of the signal
+ * \param theEvent a mouse event
+ */
 void CurveCreator_Widget::onMouseMove( SUIT_ViewWindow*, QMouseEvent* theEvent )
 {
   if ( getActionMode() != ModificationMode || !myDragStarted )
@@ -924,23 +1021,51 @@ void CurveCreator_Widget::onMouseMove( SUIT_ViewWindow*, QMouseEvent* theEvent )
   if ( (aPos - myDragStartPosition).manhattanLength() < QApplication::startDragDistance() )
     return;
 
+  START_MEASURE_TIME;
+
   moveSelectedPoints( aPos.x(), aPos.y() );
   myDragStartPosition = aPos;
+
+  END_MEASURE_TIME( "drag" );
+}
+
+/**
+ * Set zero viewer by the last view closed in
+ * \param theManager a viewer manager
+ */
+void CurveCreator_Widget::onLastViewClosed( SUIT_ViewManager* theManager )
+{
+  myOCCViewer = 0;
+}
+
+void CurveCreator_Widget::onMousePress( QMouseEvent* theEvent )
+{
+  onMousePress( 0, theEvent );
+}
+
+void CurveCreator_Widget::onMouseRelease( QMouseEvent* theEvent )
+{
+  onMouseRelease( 0, theEvent );
+}
+
+void CurveCreator_Widget::onMouseMove( QMouseEvent* theEvent )
+{
+  onMouseMove( 0, theEvent );
 }
 
 void CurveCreator_Widget::onCellChanged( int theRow, int theColumn )
 {
-  int aCurrSect = getSectionId( theRow );
-  int aPntIndex = getPointId( theRow );
+  int aCurrSect = myLocalPointView->getSectionId( theRow );
+  int aPntIndex = myLocalPointView->getPointId( theRow );
 
   if ( aPntIndex < 0 )
     return;
 
-  SectionToPointList aSelPoints;
+  CurveCreator_ICurve::SectionToPointList aSelPoints;
   startCurveModification( aSelPoints );
 
-  double aX  = myLocalPointView->item( theRow, 2 )->text().toDouble();
-  double anY = myLocalPointView->item( theRow, 3 )->text().toDouble();
+  double aX  = myLocalPointView->item( theRow, 2 )->data( Qt::UserRole ).toDouble();
+  double anY = myLocalPointView->item( theRow, 3 )->data( Qt::UserRole ).toDouble();
   std::deque<float> aChangedPos;
   aChangedPos.push_back( aX );
   aChangedPos.push_back( anY );
@@ -984,80 +1109,57 @@ void CurveCreator_Widget::removeSection()
  */
 void CurveCreator_Widget::removePoint()
 {
-  SectionToPointList aPoints;
-  getSelectedPonts( aPoints );
+  CurveCreator_ICurve::SectionToPointList aPoints;
+  getSelectedPoints( aPoints );
   if ( aPoints.size() == 0 )
     return;
 
-  SectionToPointList aSelPoints;
+  CurveCreator_ICurve::SectionToPointList aSelPoints;
   startCurveModification( aSelPoints, false );
 
-  // the points should be removed in a decreased order
-  QMap<int, QList<int> > aConvPoints;
-  convert( aPoints, aConvPoints );
-  QMap<int, QList<int> >::const_iterator anIt = aConvPoints.begin(),
-                                          aLast = aConvPoints.end();
-  for ( ; anIt != aLast; anIt++ ) {
-    int aSectionId = anIt.key();
-
-    QList<int> aSectionPoints = anIt.value();
-    qSort( aPoints );
-    for( int i = aSectionPoints.size()-1; i >= 0; i-- ){
-      int aPntIndx = aSectionPoints[i];
-      myCurve->removePoint( aSectionId, aPntIndx );
-      mySectionView->pointsRemoved( aSectionId, aPntIndx );
-    }
-  }
-
-  finishCurveModification( SectionToPointList() );
+  myCurve->removeSeveralPoints( aPoints );
+  finishCurveModification( CurveCreator_ICurve::SectionToPointList() );
 }
 
 void CurveCreator_Widget::insertPointToSelectedSegment( const int theX,
                                                         const int theY )
 {
-  OCCViewer_Viewer* aViewer = getOCCViewer();
-  if ( !aViewer )
-    return;
+  Handle(AIS_InteractiveContext) aContext = getAISContext();
 
+  OCCViewer_ViewPort3d* aViewPort = getViewPort();
+  Handle(V3d_View) aView;
+  if ( aViewPort )
+    aView = aViewPort->getView();
+
+  if ( aContext.IsNull() || aView.IsNull() )
+    return;
   gp_Pnt aPoint;
   gp_Pnt aPoint1, aPoint2;
-  bool isFoundPoint = false;
-  Handle(AIS_InteractiveContext) aContext = aViewer->getAISContext();
-  for ( aContext->InitSelected(); aContext->MoreSelected() && !isFoundPoint;
-        aContext->NextSelected() ) {
-    TopoDS_Shape aTShape = aContext->SelectedShape();
-    if ( !aTShape.IsNull() && aTShape.ShapeType() == TopAbs_VERTEX )
-      continue;
-    else {
-      Handle(SelectMgr_EntityOwner) anOwner = aContext->SelectedOwner();
-      if ( anOwner.IsNull() )
-        continue;
-      const TopLoc_Location& aLocation = anOwner->Location();
-      Handle(AIS_InteractiveObject) anAIS = Handle(AIS_InteractiveObject)::DownCast( anOwner->Selectable() );
-      isFoundPoint = pointOnObject( anAIS, theX, theY, aPoint, aPoint1, aPoint2 );
-    }
-  }
+  bool isFoundPoint = CurveCreator_Utils::getNeighbourPoints( aContext, aView, theX, theY,
+                                                              aPoint, aPoint1, aPoint2 );
   if ( !isFoundPoint )
     return;
 
   // insert the point to the model curve
-  SectionToPointList aSelPoints;
+  CurveCreator_ICurve::SectionToPointList aSelPoints;
   startCurveModification( aSelPoints );
 
   CurveCreator::Coordinates aCoords;
   aCoords.push_back( aPoint.X() );
   aCoords.push_back( aPoint.Y() );
 
-  SectionToPointList aPoints1, aPoints2;
+  CurveCreator_ICurve::SectionToPointList aPoints1, aPoints2;
   findSectionsToPoints( aPoint1.X(), aPoint1.Y(), aPoints1 );
   findSectionsToPoints( aPoint2.X(), aPoint2.Y(), aPoints2 );
-  SectionToPointList::const_iterator anIt = aPoints1.begin(), aLast = aPoints1.end();
+  CurveCreator_ICurve::SectionToPointList::const_iterator anIt = aPoints1.begin(),
+                                                          aLast = aPoints1.end();
   int aSectionId = -1;
   // there can be a case when a new point is added into two sections
   int aPoint1Id = -1, aPoint2Id = -1;
   for ( ; anIt != aLast && aSectionId < 0; anIt++ ) {
     int aSectionCur = anIt->first;
-    SectionToPointList::const_iterator anIt2 = aPoints2.begin(), aLast2 = aPoints2.end();
+    CurveCreator_ICurve::SectionToPointList::const_iterator anIt2 = aPoints2.begin(),
+                                                            aLast2 = aPoints2.end();
     for ( ; anIt2 != aLast2 && aSectionId < 0; anIt2++ ) {
       if ( anIt2->first == aSectionCur ) {
         aSectionId = aSectionCur;
@@ -1080,93 +1182,73 @@ void CurveCreator_Widget::insertPointToSelectedSegment( const int theX,
 
   finishCurveModification( aSelPoints );
 
-  setSelectedPonts();
-  updateUndoRedo();
+  setSelectedPoints();
 }
 
 void CurveCreator_Widget::moveSelectedPoints( const int theXPosition,
                                               const int theYPosition )
 {
-  OCCViewer_Viewer* aViewer = getOCCViewer();
-  if ( !aViewer )
+  OCCViewer_ViewPort3d* aViewPort = getViewPort();
+  if ( !aViewPort )
     return;
 
-  SectionToPointList aPoints;
+  CurveCreator_ICurve::SectionToPointList aPoints;
   startCurveModification( aPoints, false );
 
-  OCCViewer_ViewWindow* aWindow =
-           (OCCViewer_ViewWindow*)aViewer->getViewManager()->getActiveView();
   gp_Pnt aStartPnt = CurveCreator_Utils::ConvertClickToPoint( myDragStartPosition.x(),
-                                                     myDragStartPosition.y(),
-                                                     aWindow->getViewPort()->getView() );
+                                                              myDragStartPosition.y(),
+                                                              aViewPort->getView() );
   gp_Pnt anEndPnt = CurveCreator_Utils::ConvertClickToPoint( theXPosition, theYPosition,
-                                                     aWindow->getViewPort()->getView() );
+                                                             aViewPort->getView() );
   double aXDelta = aStartPnt.X() - anEndPnt.X();
   double anYDelta = aStartPnt.Y() - anEndPnt.Y();
 
-  int aSectionId;
-  int aPointId;
+  CurveCreator_ICurve::SectionToPointCoordsList aCoordList;
   std::deque<float> aChangedPos;
-  SectionToPointList::const_iterator anIt = myDragPoints.begin(), aLast = myDragPoints.end();
+  CurveCreator_ICurve::SectionToPointList::const_iterator anIt = myDragPoints.begin(),
+                                                          aLast = myDragPoints.end();
   for ( ; anIt != aLast; anIt++ ) {
-    aSectionId = anIt->first;
-    aPointId = anIt->second;
+    int aSectionId = anIt->first;
+    int aPointId = anIt->second;
     aChangedPos = myCurve->getPoint( aSectionId, aPointId );
     if ( aChangedPos.size() < 2 )
       continue;
     aChangedPos[0] = aChangedPos[0] - aXDelta;
     aChangedPos[1] = aChangedPos[1] - anYDelta;
-    myCurve->setPoint( aSectionId, aPointId, aChangedPos );
+    
+    aCoordList.push_back(
+      std::make_pair(std::make_pair( aSectionId, aPointId ), 
+                     aChangedPos ));
   }
+  myCurve->setSeveralPoints( aCoordList );
+
   myDragged = true;
   finishCurveModification( myDragPoints );
 }
 
 void CurveCreator_Widget::updateLocalPointView()
 {
-  OCCViewer_Viewer* aViewer = getOCCViewer();
-  if ( !aViewer )
+  if ( myDragStarted )
     return;
-  Handle(AIS_InteractiveContext) aContext = aViewer->getAISContext();
-
-  bool isBlocked = myLocalPointView->blockSignals(true);
-  gp_Pnt aPnt;
-  myLocalPointView->setRowCount( 0 );
-  for ( aContext->InitSelected(); aContext->MoreSelected(); aContext->NextSelected() ) {
-    TopoDS_Vertex aVertex;
-    TopoDS_Shape aShape = aContext->SelectedShape();
-    if ( !aShape.IsNull() && aShape.ShapeType() == TopAbs_VERTEX )
-      aVertex = TopoDS::Vertex( aContext->SelectedShape() );
-    else {
-      Handle(SelectMgr_EntityOwner) anOwner = aContext->SelectedOwner();
-      if ( !anOwner.IsNull() ) {
-        Handle(AIS_InteractiveObject) anAIS = Handle(AIS_InteractiveObject)::DownCast( anOwner->Selectable() );
-        if ( !anAIS.IsNull() ) {
-          Handle(AIS_Point) aPoint = Handle(AIS_Point)::DownCast( anAIS);
-          if ( !aPoint.IsNull() )
-            aVertex = TopoDS::Vertex( aPoint->Vertex() );
-        }
-        if ( aVertex.IsNull() ) {
-          // the following happens if there are no points in the current curve, there is only a shape
-          /*Handle(StdSelect_BRepOwner) aBrepOwner = Handle(StdSelect_BRepOwner)::DownCast(anOwner);
-          if ( aBrepOwner.IsNull() )
-            continue;
-          if ( aBrepOwner->HasShape() ) {
-            const TopoDS_Shape& aShape = aBrepOwner->Shape();
-            if ( !aShape.IsNull() && aShape.ShapeType() == TopAbs_VERTEX )
-            {
-              aVertex = TopoDS::Vertex( aShape );
-            }
-          }*/
-        }
-      }
-      if ( aVertex.IsNull() )
-        continue;
-      aPnt = BRep_Tool::Pnt( aVertex );
-      addLocalPointToTable( aPnt.X(), aPnt.Y() );
-    }
+  Handle(AIS_InteractiveContext) aContext = getAISContext();
+  if ( aContext.IsNull() )
+    return;
+
+  CurveCreator_Utils::getSelectedPoints( aContext, myCurve, myLocalPoints );
+  int aNbPoints = myLocalPoints.size();
+  bool isRowLimit = aNbPoints > myLocalPointRowLimit;
+  myLocalPointView->setVisible( !isRowLimit );
+
+  if ( !isRowLimit ) {
+    bool isBlocked = myLocalPointView->blockSignals(true);
+    myLocalPointView->setRowCount( 0 );
+    CurveCreator_ICurve::SectionToPointList::const_iterator anIt = myLocalPoints.begin(),
+                                                            aLast = myLocalPoints.end();
+    for ( ; anIt != aLast; anIt++ )
+      myLocalPointView->addLocalPointToTable( *anIt );
+
+    myLocalPointView->blockSignals( isBlocked );
   }
-  myLocalPointView->blockSignals(isBlocked);
 }
 
 /**
@@ -1174,103 +1256,9 @@ void CurveCreator_Widget::updateLocalPointView()
  */
 void CurveCreator_Widget::setLocalPointContext( const bool theOpen, const bool isUpdateTable )
 {
-  OCCViewer_Viewer* aViewer = getOCCViewer();
-  if ( !aViewer )
-    return;
-  Handle(AIS_InteractiveContext) ic = aViewer->getAISContext();
-
-  if ( theOpen ) {
-    // Open local context if there is no one
-    if ( !ic->HasOpenedContext() ) {
-      ic->ClearCurrents( false );
-      ic->OpenLocalContext( false/*use displayed objects*/, true/*allow shape decomposition*/ );
-    }
-    AIS_ListOfInteractive aList;
-    ic->DisplayedObjects( aList );
-    int aLSize = 0;
-    for ( AIS_ListIteratorOfListOfInteractive it( aList ); it.More(); it.Next() )
-      aLSize++;
-
-    for ( AIS_ListIteratorOfListOfInteractive it( aList ); it.More(); it.Next() )
-    {
-      Handle(AIS_InteractiveObject) anAIS = it.Value();
-      if ( !anAIS.IsNull() )
-      {
-        if ( anAIS->IsKind( STANDARD_TYPE( AIS_Shape ) ) )
-        {
-          ic->Load( anAIS, -1/*selection mode*/, true/*allow decomposition*/ );
-          ic->Activate( anAIS, AIS_Shape::SelectionMode( (TopAbs_ShapeEnum)TopAbs_WIRE ) );
-        }
-        else if ( anAIS->DynamicType() != STANDARD_TYPE(AIS_Trihedron) )
-        {
-          ic->Load( anAIS, -1/*selection mode*/, false/*allow decomposition*/ );
-          ic->Activate( anAIS, TopAbs_VERTEX );
-        }
-      }
-      continue;
-    }
-  }
-  else {
-    if ( ic->HasOpenedContext() )
-      ic->CloseAllContexts();
-    if ( isUpdateTable )
-      updateLocalPointView();
-  }
-}
-
-void CurveCreator_Widget::addLocalPointToTable( const double theX, const double theY )
-{
-  SectionToPointList aPoints;
-  findSectionsToPoints( theX, theY, aPoints );
-
-  SectionToPointList aSkipList;
-  // table could not contain two equal value rows
-  int aRowId = myLocalPointView->rowCount();
-  double aCurrentX, aCurrentY;
-  int aSectionId, aPointId;
-  SectionToPoint aPoint;
-  for ( int i = 0; i < aRowId; i++ ) {
-    aCurrentX = myLocalPointView->item( i, 2 )->data( Qt::UserRole ).toDouble();
-    aCurrentY = myLocalPointView->item( i, 3 )->data( Qt::UserRole ).toDouble();
-    if ( fabs( aCurrentX - theX ) < LOCAL_SELECTION_TOLERANCE &&
-         fabs( aCurrentY - theY ) < LOCAL_SELECTION_TOLERANCE ) {
-      aPoint = qMakePair( getSectionId( i ), getPointId( i ) );
-      if ( !aSkipList.contains( aPoint ) )
-        aSkipList.append( aPoint );
-    }
-  }
-  if ( aSkipList.size() == aPoints.size() )
-    return;
-
-  QTableWidgetItem* anItem;
-  SectionToPointList::const_iterator anIt = aPoints.begin(), aLast = aPoints.end();
-  for ( ; anIt != aLast; anIt++ ) {
-    aPoint = *anIt;
-    if ( aSkipList.contains( aPoint ) )
-      continue;
-
-    myLocalPointView->setRowCount( aRowId+1 );
-    aSectionId = aPoint.first;
-    aPointId = aPoint.second;
-
-    anItem = new QTableWidgetItem( myCurve->getSectionName( aSectionId ).c_str() );
-    anItem->setFlags( anItem->flags() & ~Qt::ItemIsEnabled );
-    anItem->setData( Qt::UserRole, aSectionId );
-    myLocalPointView->setItem( aRowId, 0, anItem );
-
-    anItem = new QTableWidgetItem( QString::number( aPointId + 1 ) );
-    anItem->setFlags( anItem->flags() & ~Qt::ItemIsEnabled );
-    anItem->setData( Qt::UserRole, aPointId );
-    myLocalPointView->setItem( aRowId, 1, anItem );
-
-    anItem = new QTableWidgetItem( QString::number( theX ) );
-    anItem->setData( Qt::UserRole, theX );
-    myLocalPointView->setItem( aRowId, 2, anItem );
-
-    anItem = new QTableWidgetItem( QString::number( theY ) );
-    anItem->setData( Qt::UserRole, theY );
-    myLocalPointView->setItem( aRowId, 3, anItem );
-  }
+  CurveCreator_Utils::setLocalPointContext( getAISContext(), theOpen );
+  if ( !theOpen && isUpdateTable )
+    updateLocalPointView();
 }
 
 /**
@@ -1280,77 +1268,40 @@ void CurveCreator_Widget::addLocalPointToTable( const double theX, const double
  */
 void CurveCreator_Widget::setDragStarted( const bool theState, const QPoint& thePoint )
 {
-  OCCViewer_Viewer* aViewer = getOCCViewer();
   if ( theState ) {
-    getSelectedPonts( myDragPoints );
+    getSelectedPoints( myDragPoints );
     myDragStarted = myDragPoints.size();
     myDragStartPosition = thePoint;
-    if ( aViewer && myDragStarted ) {
+    if ( myDragStarted ) {
       // change a viewer interaction style in order to avoid a select rectangle build
-      myDragInteractionStyle = aViewer->interactionStyle();
-      aViewer->setInteractionStyle(SUIT_ViewModel::KEY_FREE);
+      myDragInteractionStyle = changeInteractionStyle( SUIT_ViewModel::KEY_FREE );
     }
   }
   else {
-    if ( aViewer && myDragStarted )
-      aViewer->setInteractionStyle( myDragInteractionStyle );
+    if ( myDragStarted )
+      changeInteractionStyle( myDragInteractionStyle );
     myDragStarted = false;
     myDragPoints.clear();
   }
   myDragged = false;
 }
 
-void CurveCreator_Widget::getSelectedPonts( CurveCreator_Widget::SectionToPointList& thePoints )
+void CurveCreator_Widget::getSelectedPoints( CurveCreator_ICurve::SectionToPointList& thePoints )
 {
   thePoints.clear();
-  for ( int i = 0, aNb = myLocalPointView->rowCount(); i < aNb; i++ )
-    thePoints.append( qMakePair( getSectionId( i ), getPointId( i ) ) );
+  thePoints = myLocalPoints;
 }
 
-void CurveCreator_Widget::setSelectedPonts( const CurveCreator_Widget::SectionToPointList& thePoints )
+void CurveCreator_Widget::setSelectedPoints( const CurveCreator_ICurve::SectionToPointList& thePoints )
 {
-  OCCViewer_Viewer* aViewer = getOCCViewer();
-  if ( !aViewer )
+  if ( myDragStarted )
     return;
-
-  AIS_ListOfInteractive aListToSelect;
-
-  Handle(AIS_InteractiveContext) ic = aViewer->getAISContext();
-  if ( !ic->HasOpenedContext() )
+  Handle(AIS_InteractiveContext) aContext = getAISContext();
+  if ( aContext.IsNull() || !aContext->HasOpenedContext() )
     return;
 
-  AIS_ListOfInteractive aDisplayedList;
-  ic->DisplayedObjects( aDisplayedList );
-  for ( AIS_ListIteratorOfListOfInteractive it( aDisplayedList ); it.More(); it.Next() )
-  {
-    Handle(AIS_InteractiveObject) anAIS = it.Value();
-    if ( anAIS.IsNull() )
-      continue;
-    Handle(AIS_Point) anAISPoint = Handle(AIS_Point)::DownCast( anAIS );
-    if ( anAISPoint.IsNull() )
-      continue;
-
-    TopoDS_Vertex aVertex = TopoDS::Vertex( anAISPoint->Vertex() );
-
-    if ( aVertex.IsNull() )
-      continue;
-
-    gp_Pnt aPnt = BRep_Tool::Pnt( aVertex );
-
-    SectionToPointList aPoints;
-    findSectionsToPoints( aPnt.X(), aPnt.Y(), aPoints );
+  CurveCreator_Utils::setSelectedPoints( aContext, myCurve, thePoints );
 
-    SectionToPointList::const_iterator anIt = aPoints.begin(), aLast = aPoints.end();
-    SectionToPoint aPoint;
-    for ( ; anIt != aLast; anIt++ ) {
-      aPoint = *anIt;
-      if ( thePoints.contains( aPoint ) )
-        aListToSelect.Append( anAIS );
-    }
-  }
-
-  ic->ClearSelected( Standard_False );
-  aViewer->setObjectsSelected( aListToSelect );
   updateLocalPointView();
 }
 
@@ -1364,12 +1315,12 @@ void CurveCreator_Widget::setSelectedPonts( const CurveCreator_Widget::SectionTo
  * \param theFillPoints a flag whether the selection list should be filled
  */
 void CurveCreator_Widget::startCurveModification(
-                           CurveCreator_Widget::SectionToPointList& thePoints,
+                           CurveCreator_ICurve::SectionToPointList& thePoints,
                            const bool theFillPoints )
 {
   if ( theFillPoints ) {
     thePoints.clear();
-    getSelectedPonts( thePoints );
+    getSelectedPoints( thePoints );
   }
   setLocalPointContext( false );
 }
@@ -1380,11 +1331,12 @@ void CurveCreator_Widget::startCurveModification(
  * \param thePoints a list of curve selected points
  */
 void CurveCreator_Widget::finishCurveModification(
-                           const CurveCreator_Widget::SectionToPointList& thePoints )
+                           const CurveCreator_ICurve::SectionToPointList& thePoints )
 {
-  setLocalPointContext( true );
-  int aSectionId = 0;
-  setSelectedPonts( thePoints );
+  if ( getActionMode() == ModificationMode )
+    setLocalPointContext( true );
+  setSelectedPoints( thePoints );
+  updateUndoRedo();
 }
 
 /**
@@ -1394,194 +1346,28 @@ void CurveCreator_Widget::finishCurveModification(
  */
 int CurveCreator_Widget::findLocalPointIndex( int theSectionId, float theX, float theY )
 {
-  int aPntIndex = -1;
-
-  CurveCreator::Coordinates aCoords;
-  for ( int i = 0, aNb = myCurve->getNbPoints( theSectionId ); i < aNb && aPntIndex < 0; i++ ) {
-    aCoords = myCurve->getPoint( theSectionId, i );
-    if ( aCoords.size() < 2 )
-      continue;
-    if ( fabs( aCoords[0] - theX ) < LOCAL_SELECTION_TOLERANCE &&
-         fabs( aCoords[1] - theY ) < LOCAL_SELECTION_TOLERANCE )
-      aPntIndex = i;
-  }
-
-  return aPntIndex;
+  return CurveCreator_UtilsICurve::findLocalPointIndex( myCurve, theSectionId, theX, theY );
 }
 
 void CurveCreator_Widget::findSectionsToPoints( const double theX, const double theY,
-                                 CurveCreator_Widget::SectionToPointList& thePoints )
+                                 CurveCreator_ICurve::SectionToPointList& thePoints )
 {
-  thePoints.clear();
-
-  int aPointId = -1;
-  for ( int i = 0, aNb = myCurve->getNbSections(); i < aNb; i++ ) {
-    aPointId = findLocalPointIndex( i, theX, theY );
-    if ( aPointId < 0 )
-      continue;
-    SectionToPoint aPoint = qMakePair( i, aPointId );
-    if ( !thePoints.contains( aPoint ) )
-     thePoints.append( aPoint );
-  }
+  return CurveCreator_UtilsICurve::findSectionsToPoints( myCurve, theX, theY, thePoints );
 }
 
-void CurveCreator_Widget::convert( const SectionToPointList& thePoints,
+void CurveCreator_Widget::convert( const CurveCreator_ICurve::SectionToPointList& thePoints,
                                    QMap<int, QList<int> >& theConvPoints )
 {
-  theConvPoints.clear();
-
-  SectionToPointList::const_iterator anIt = thePoints.begin(), aLast = thePoints.end();
-  QList<int> aPoints;
-  int aSectionId, aPointId;
-  for ( ; anIt != aLast; anIt++ ) {
-    aSectionId = anIt->first;
-    aPointId = anIt->second;
-    aPoints.clear();
-    if ( theConvPoints.contains( aSectionId ) )
-      aPoints = theConvPoints[aSectionId];
-    if ( aPoints.contains( aPointId ) )
-      continue;
-    aPoints.append( aPointId );
-    theConvPoints[aSectionId] = aPoints;
-  }
-}
-
-/**
- * Checks whether the point belongs to the OCC object
- * \param theObject a line or shape with a bspline inside
- * \param theX the X coordinate in the view.
- * \param theY the Y coordinate in the view.
- * \param thePoint the output point to be append to the model curve
- * \param thePoint1 the output point to bound the line where a new point should be inserted
- * \param thePoint2 the output point to bound the line where a new point should be inserted
- */
-bool CurveCreator_Widget::pointOnObject( Handle(AIS_InteractiveObject) theObject,
-                                         const int theX, const int theY,
-                                         gp_Pnt& thePoint,
-                                         gp_Pnt& thePoint1, gp_Pnt& thePoint2 )
-{
-  bool isFound = false;
-
-  OCCViewer_Viewer* aViewer = getOCCViewer();
-  if ( theObject.IsNull() || !aViewer )
-    return isFound;
-
-  gp_Pnt aPoint;
-  Standard_Real aParameter;
-  gp_Pnt aPnt1, aPnt2;
-  Handle(AIS_Line) aLine = Handle(AIS_Line)::DownCast( theObject );
-  if ( !aLine.IsNull() ) {
-    const Handle(Geom_Line) aGLine = aLine->Line();
-    isFound = hasProjectPointOnCurve( theX, theY, aGLine, aParameter );
-    if ( isFound ) {
-      aPoint = aGLine->Value( aParameter );
-
-      Handle(Geom_Point) aPStart;
-      Handle(Geom_Point) aPEnd;
-      aLine->Points( aPStart, aPEnd );
-      aPnt1 = aPStart->Pnt();
-      aPnt2 = aPEnd->Pnt();
-
-      // in case of Geom line a projection is performed to the infinite line,
-      // so it is necessary to bound it by the line size
-      Bnd_Box aLineBox;
-      aLineBox.Set( aPnt1, gp_Vec( aPnt1, aPnt2 ) );
-      isFound = !aLineBox.IsOut( aPoint );
-    }
-  }
-  else {
-    Handle(AIS_Shape) aShape = Handle(AIS_Shape)::DownCast( theObject );
-    if ( !aShape.IsNull() ) {
-      const TopoDS_Wire& aWire = TopoDS::Wire( aShape->Shape() );
-      if ( !aWire.IsNull() ) {
-        TopExp_Explorer anExp( aWire, TopAbs_EDGE );
-        for ( ; anExp.More(); anExp.Next())
-        {
-          const TopoDS_Edge& anEdge = TopoDS::Edge(anExp.Current());
-          if ( !anEdge.IsNull() ) {
-            Standard_Real aFirst, aLast;
-            Handle(Geom_Curve) aCurve = BRep_Tool::Curve( anEdge, aFirst, aLast );
-
-            if ( aCurve->IsKind( STANDARD_TYPE(Geom_BSplineCurve) ) ) {
-              Handle(Geom_BSplineCurve) aBSplineCurve = Handle(Geom_BSplineCurve)::DownCast( aCurve );
-              if ( !aBSplineCurve.IsNull() ) {
-                isFound = hasProjectPointOnCurve( theX, theY, aCurve, aParameter );
-                if ( isFound ) {
-                  aPoint = aBSplineCurve->Value( aParameter );
-                  Standard_Integer anI1, anI2;
-                  aBSplineCurve->LocateU( aParameter, LOCAL_SELECTION_TOLERANCE, anI1, anI2 );
-
-                  aPnt1 = aBSplineCurve->Value( aBSplineCurve->Knot( anI1 ) );
-                  aPnt2 = aBSplineCurve->Value( aBSplineCurve->Knot( anI2 ) );
-                }
-              }
-            }
-          }
-        }
-      }
-    }
-  }
-  if ( isFound ) {
-    thePoint = aPoint;
-    thePoint1 = aPnt1;
-    thePoint2 = aPnt2;
-  }
-  return isFound;
-}
-
-/**
- * Returns whether the clicked point belong to the curve or has a very near projection
- * \param theX the X coordinate of a point clicked in the OCC viewer
- * \param theY the Y coordinate of a point clicked in the OCC viewer
- * \param theCurve a geometry curve
- * \param theOutPoint a found projected point on the curve
- */
-bool CurveCreator_Widget::hasProjectPointOnCurve( const int theX, const int theY,
-                                                  const Handle(Geom_Curve)& theCurve,
-                                                  Standard_Real& theParameter )
-{
-  bool isFound = false;
-  OCCViewer_Viewer* aViewer = getOCCViewer();
-  if ( !aViewer )
-    return isFound;
-
-  OCCViewer_ViewWindow* aWindow =
-           (OCCViewer_ViewWindow*)aViewer->getViewManager()->getActiveView();
-  Handle(V3d_View) aView = aWindow->getViewPort()->getView();
-  gp_Pnt aPoint = CurveCreator_Utils::ConvertClickToPoint( theX, theY, aView );
-
-  GeomAPI_ProjectPointOnCurve aProj( aPoint, theCurve );
-  Standard_Integer aNbPoint = aProj.NbPoints();
-  if (aNbPoint > 0) {
-    for (Standard_Integer j = 1; j <= aNbPoint && !isFound; j++) {
-      gp_Pnt aNewPoint = aProj.Point( j );
-      theParameter = aProj.Parameter( j );
-
-      int aX, anY;
-      CurveCreator_Utils::ConvertPointToClick( aNewPoint, aView, aX, anY );
-
-      int aXDelta = abs( aX - theX );
-      int anYDelta = abs( anY - theY );
-      isFound = aXDelta < SCENE_PIXEL_TOLERANCE && anYDelta < SCENE_PIXEL_TOLERANCE;
-    }
-  }
-  return isFound;
-}
-
-/**
- * Returns a section index from the table
- * \param theRowId a table row
- */
-int CurveCreator_Widget::getSectionId( const int theRowId ) const
-{
-  return myLocalPointView->item( theRowId, 0 )->data( Qt::UserRole ).toInt();
+  return CurveCreator_UtilsICurve::convert( thePoints, theConvPoints );
 }
 
 /**
- * Returns a point index from the table
- * \param theRowId a table row
+ * Returns whethe the container has the value
+ * \param theList a container of values
+ * \param theValue a value
  */
-int CurveCreator_Widget::getPointId( const int theRowId ) const
+bool CurveCreator_Widget::contains( const CurveCreator_ICurve::SectionToPointList& theList,
+                                    const CurveCreator_ICurve::SectionToPoint& theValue ) const
 {
-  return myLocalPointView->item( theRowId, 1 )->data( Qt::UserRole ).toInt();
+  return CurveCreator_UtilsICurve::contains( theList, theValue );
 }