NAME

       SoTimerQueueSensor — abstract base class for sensors dependent on time

INHERITS FROM

       SoSensor > SoTimerQueueSensor

SYNOPSIS

       #include <Inventor/sensors/SoTimerQueueSensor.h>

          Methods from class SoTimerQueueSensor:

     const SbTime &      getTriggerTime()
     virtual void        schedule()
     virtual void        unschedule()
     virtual SbBool      isScheduled()

          Methods from class SoSensor:

     void                setFunction(SoSensorCB *callbackFunction)
     SoSensorCB *        getFunction() const
     void                setData(void *callbackData)
     void *              getData() const

DESCRIPTION

       Timer  queue  sensors  are sensors that trigger themselves at specific times. The timer queue is normally
       processed as part of a programs main loop when the program is not busy doing something  else.  Note  that
       processing the timer queue is not asynchronous — the program must re-enter its main loop for timers to be
       triggered.  When  the  timer  queue is processed, all timers scheduled to go off at or before the current
       time are triggered once, in order from earliest to latest.

METHODS

     const SbTime &      getTriggerTime()
          Returns the time at which this sensor is scheduled to be triggered. If the sensor is not scheduled the
          results are undefined.

     virtual void        schedule()
          Adds this sensor to the timer queue. Subclasses provide methods for setting when the  sensor  will  be
          triggered.

     virtual void        unschedule()
          If this sensor is scheduled, removes it from the timer queue so that it will not be triggered.

     virtual SbBool      isScheduled()
          Returns TRUE if this sensor has been scheduled and is waiting in the timer queue to be triggered.

SEE ALSO

       SoTimerSensor, SoAlarmSensor, SoIdleSensor, SoOneShotSensor, SoDataSensor

                                                                                       SoTimerQueueSensor(3IV)()