CMake configuration
-------------------

To use the real-time features, you must modify the *CMake* flags. You
have several ways to obtain this:

-  If you are using a Gui interface (*Cmake gui*), you can simply
   check/uncheck the boxes corresponding to the flags.
-  Otherwise with a *Terminal*, run:

   -  ``ccmake .`` to modify the flags with a *terminal application*
   -  ``cmake . -DFLAG_REAL_TIME=ON`` to modify the flags in command
      line.

-  Edit the *CmakeLists.txt* file and add the following command
   ``set_flag( FLAG_REAL_TIME ON )`` to modify the default flags.

Related *CMake* flags:
~~~~~~~~~~~~~~~~~~~~~~

-  **FLAG_REAL_TIME**: set it to *ON* if you want to use the real-time
   features:

   -  **FLAG_PLOT**: set it to *ON* to activate the following features

      -  plotting graphs in real-time
      -  interacting with keyboard, mouse and joystick
      -  controlling the simulation speed
      -  stopping during the simulation
      -  going back in time for the 3D visualization (**FLAG_VISU** must
         be *ON*)
      -  changing the 3D visualization viewpoint (**FLAG_VISU** must be
         *ON*)

   -  **FLAG_VISU**: set it to *ON* to visualize in real-time the 3D
      model (as it appears in *MBSysPad*)

..

   **WARNING:**

   If **FLAG_REAL_TIME** is set to *OFF*, **FLAG_PLOT** and
   **FLAG_VISU** are automatically set to *OFF*.

   If **FLAG_REAL_TIME** is set to *ON*, **FLAG_PLOT** and **FLAG_VISU**
   are by default set to *ON* (can be modified).