/// Displaus object and fit all viewer if the object is first (update viewer will not be called)
/// Asks the module whether the object can be displayed
/// \param theObj an object
+ /// \param theFirstVisualizedBody an output state whether there are not object displayed in the view
+ /// and the displayed object is a body
/// \return true if the object is displayed
- bool displayObject(ObjectPtr theObj);
+ bool displayObject(ObjectPtr theObj, bool& theFirstVisualizedBody);
/// Calls the module method of cusomize object for the feature of the current operation
/// \return true if the object is modified