/*
* Sets the joystick callback and polling rate for the current window
*/
void FGAPIENTRY glutJoystickFunc( void (* callback)
( unsigned int, int, int, int ),
int pollInterval )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutJoystickFunc" );
fgInitialiseJoysticks ();
if ( ( ( fgStructure.CurrentWindow->State.JoystickPollRate < 0 ) ||
!FETCH_WCB(*fgStructure.CurrentWindow,Joystick) ) && /* Joystick callback was disabled */
( callback && ( pollInterval >= 0 ) ) ) /* but is now enabled */
++fgState.NumActiveJoysticks;
else if ( ( ( fgStructure.CurrentWindow->State.JoystickPollRate >= 0 ) &&
FETCH_WCB(*fgStructure.CurrentWindow,Joystick) ) && /* Joystick callback was enabled */
( !callback || ( pollInterval < 0 ) ) ) /* but is now disabled */
--fgState.NumActiveJoysticks;
SET_CALLBACK( Joystick );
fgStructure.CurrentWindow->State.JoystickPollRate = pollInterval;
fgStructure.CurrentWindow->State.JoystickLastPoll =
fgElapsedTime() - fgStructure.CurrentWindow->State.JoystickPollRate;
if( fgStructure.CurrentWindow->State.JoystickLastPoll < 0 )
fgStructure.CurrentWindow->State.JoystickLastPoll = 0;
}
/*
* Sets the joystick callback and polling rate for the current window
*/
void FGAPIENTRY glutJoystickFunc( FGCBJoystick callback, int pollInterval )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutJoystickFunc" );
fgInitialiseJoysticks ();
if ( (
fgStructure.CurrentWindow->State.JoystickPollRate <= 0 || /* Joystick callback was disabled */
!FETCH_WCB(*fgStructure.CurrentWindow,Joystick)
) &&
(
callback && ( pollInterval > 0 ) /* but is now enabled */
) )
++fgState.NumActiveJoysticks;
else if ( (
fgStructure.CurrentWindow->State.JoystickPollRate > 0 && /* Joystick callback was enabled */
FETCH_WCB(*fgStructure.CurrentWindow,Joystick)
) &&
(
!callback || ( pollInterval <= 0 ) /* but is now disabled */
) )
--fgState.NumActiveJoysticks;
SET_CALLBACK( Joystick );
fgStructure.CurrentWindow->State.JoystickPollRate = pollInterval;
/* set last poll time such that joystick will be polled asap */
fgStructure.CurrentWindow->State.JoystickLastPoll = fgElapsedTime();
if (fgStructure.CurrentWindow->State.JoystickLastPoll < pollInterval)
fgStructure.CurrentWindow->State.JoystickLastPoll = 0;
else
fgStructure.CurrentWindow->State.JoystickLastPoll -= pollInterval;
}
/*
* Sets the joystick callback and polling rate for the current window
*/
void FGAPIENTRY glutJoystickFunc( void (* callback)
( unsigned int, int, int, int ),
int pollInterval )
{
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutJoystickFunc" );
fgInitialiseJoysticks ();
SET_CALLBACK( Joystick );
fgStructure.CurrentWindow->State.JoystickPollRate = pollInterval;
fgStructure.CurrentWindow->State.JoystickLastPoll =
fgElapsedTime() - fgStructure.CurrentWindow->State.JoystickPollRate;
if( fgStructure.CurrentWindow->State.JoystickLastPoll < 0 )
fgStructure.CurrentWindow->State.JoystickLastPoll = 0;
}
