0026462: Visualization - selection does not adapt to line width change

- added interface for changing sensitivity of a particular selection through both interactive and local context;
- added corresponding methods for changing sensitivity to SelectMgr_SelectionManager, SelectMgr_Selection and SelectBasics_SensitiveEntity;
- option -setSensitivity was implemented in vaspects Draw command;
- test case for issue #26462

src/SelectMgr/SelectMgr_Selection.cxx

@@ -27,7 +27,8 @@ SelectMgr_Selection::SelectMgr_Selection (const Standard_Integer theModeIdx)
 : myMode (theModeIdx),
   mySelectionState (SelectMgr_SOS_Unknown),
   myBVHUpdateStatus (SelectMgr_TBU_None),
-  mySensFactor (2)
+  mySensFactor (2),
+  myIsCustomSens (Standard_False)
 {}
 
 SelectMgr_Selection::~SelectMgr_Selection()
@@ -71,8 +72,15 @@ void SelectMgr_Selection::Add (const Handle(SelectBasics_SensitiveEntity)& theSe
       anEntity->SetActiveForSelection();
     }
 
-    mySensFactor = Max (mySensFactor,
-                        anEntity->BaseSensitive()->SensitivityFactor());
+    if (myIsCustomSens)
+    {
+      anEntity->BaseSensitive()->SetSensitivityFactor (mySensFactor);
+    }
+    else
+    {
+      mySensFactor = Max (mySensFactor,
+                          anEntity->BaseSensitive()->SensitivityFactor());
+    }
   }
 }	
 
@@ -136,3 +144,20 @@ Standard_Integer SelectMgr_Selection::Sensitivity() const
 {
   return mySensFactor;
 }
+
+//==================================================
+// function: SetSensitivity
+// purpose : Changes sensitivity of the selection and all its entities to the given value.
+//           IMPORTANT: This method does not update any outer selection structures, so for
+//           proper updates use SelectMgr_SelectionManager::SetSelectionSensitivity method.
+//==================================================
+void SelectMgr_Selection::SetSensitivity (const Standard_Integer theNewSens)
+{
+  mySensFactor = theNewSens;
+  myIsCustomSens = Standard_True;
+  for (Standard_Integer anIdx = 0; anIdx < myEntities.Size(); ++anIdx)
+  {
+    Handle(SelectMgr_SensitiveEntity)& anEntity = myEntities.ChangeValue (anIdx);
+    anEntity->BaseSensitive()->SetSensitivityFactor (theNewSens);
+  }
+}

src/SelectMgr/SelectMgr_Selection.hxx

@@ -132,6 +132,11 @@ public:
   //! Returns sensitivity of the selection
   Standard_EXPORT Standard_Integer Sensitivity() const;
 
+  //! Changes sensitivity of the selection and all its entities to the given value.
+  //! IMPORTANT: This method does not update any outer selection structures, so for
+  //! proper updates use SelectMgr_SelectionManager::SetSelectionSensitivity method.
+  Standard_EXPORT void SetSensitivity (const Standard_Integer theNewSens);
+
   DEFINE_STANDARD_RTTI (SelectMgr_Selection, MMgt_TShared)
 
 protected:
@@ -148,6 +153,7 @@ private:
   mutable SelectMgr_StateOfSelection                              mySelectionState;
   mutable SelectMgr_TypeOfBVHUpdate                               myBVHUpdateStatus;
   Standard_Integer                                                mySensFactor;
+  Standard_Boolean                                                myIsCustomSens;
 };
 
 DEFINE_STANDARD_HANDLE(SelectMgr_Selection, MMgt_TShared)

src/SelectMgr/SelectMgr_SelectionManager.cxx

@@ -905,3 +905,51 @@ void SelectMgr_SelectionManager::SetUpdateMode (const Handle(SelectMgr_Selectabl
     theObject->Selection (theMode)->UpdateStatus (theType);
 }
 
+//=======================================================================
+//function : SetSelectionSensitivity
+//purpose  : Allows to manage sensitivity of a particular selection of interactive object theObject and
+//           changes previous sensitivity value of all sensitive entities in selection with theMode
+//           to the given theNewSensitivity.
+//=======================================================================
+void SelectMgr_SelectionManager::SetSelectionSensitivity (const Handle(SelectMgr_SelectableObject)& theObject,
+                                                          const Standard_Integer theMode,
+                                                          const Standard_Integer theNewSens)
+{
+  Standard_ASSERT_RAISE (theNewSens > 0,
+    "Error! Selection sensitivity have positive value.");
+
+  if (theObject.IsNull() || !theObject->HasSelection (theMode))
+    return;
+
+  Handle(SelectMgr_Selection) aSel = theObject->Selection (theMode);
+  const Standard_Integer aPrevSens = aSel->Sensitivity();
+  aSel->SetSensitivity (theNewSens);
+
+  if (!(myGlobal.Contains (theObject) || myLocal.IsBound (theObject)))
+    return;
+
+  if (myGlobal.Contains (theObject))
+  {
+    for (TColStd_MapIteratorOfMapOfTransient aSelectorsIter (mySelectors); aSelectorsIter.More(); aSelectorsIter.Next())
+    {
+      Handle(SelectMgr_ViewerSelector) aSelector = Handle(SelectMgr_ViewerSelector)::DownCast (aSelectorsIter.Key());
+      if (aSelector->Contains (theObject))
+      {
+        aSelector->myTolerances.Decrement (aPrevSens);
+        aSelector->myTolerances.Add (theNewSens);
+        aSelector->myToUpdateTolerance = Standard_True;
+      }
+    }
+  }
+  if (myLocal.IsBound (theObject))
+  {
+    const SelectMgr_SequenceOfSelector& aSelectors = myLocal (theObject);
+    for (SelectMgr_SequenceOfSelector::Iterator aLocalIter (aSelectors); aLocalIter.More(); aLocalIter.Next())
+    {
+      Handle(SelectMgr_ViewerSelector)& aCurSel = aLocalIter.ChangeValue();
+      aCurSel->myTolerances.Decrement (aPrevSens);
+      aCurSel->myTolerances.Add (theNewSens);
+      aCurSel->myToUpdateTolerance = Standard_True;
+    }
+  }
+}

src/SelectMgr/SelectMgr_SelectionManager.hxx

@@ -118,8 +118,12 @@ public:
   //! Sets type of update of selection with theMode of theObject to the given theType.
   Standard_EXPORT void SetUpdateMode (const Handle(SelectMgr_SelectableObject)& theObject, const Standard_Integer theMode, const SelectMgr_TypeOfUpdate theType);
 
-
-
+  //! Allows to manage sensitivity of a particular selection of interactive object theObject and
+  //! changes previous sensitivity value of all sensitive entities in selection with theMode
+  //! to the given theNewSensitivity.
+  Standard_EXPORT void SetSelectionSensitivity (const Handle(SelectMgr_SelectableObject)& theObject,
+                                                const Standard_Integer theMode,
+                                                const Standard_Integer theNewSens);
 
   DEFINE_STANDARD_RTTI(SelectMgr_SelectionManager,MMgt_TShared)