/* Creates a timer and sets its callback */
void FGAPIENTRY glutTimerFunc( unsigned int timeOut, FGCBTimer callback, int timerID )
{
SFG_Timer *timer, *node;
FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutTimerFunc" );
if( (timer = fgState.FreeTimers.Last) )
{
fgListRemove( &fgState.FreeTimers, &timer->Node );
}
else
{
if( ! (timer = malloc(sizeof(SFG_Timer))) )
fgError( "Fatal error: "
"Memory allocation failure in glutTimerFunc()" );
}
timer->Callback = callback;
timer->ID = timerID;
timer->TriggerTime = fgElapsedTime() + timeOut;
/* Insert such that timers are sorted by end-time */
for( node = fgState.Timers.First; node; node = node->Node.Next )
{
if( node->TriggerTime > timer->TriggerTime )
break;
}
fgListInsert( &fgState.Timers, &node->Node, &timer->Node );
}
/*
* Sets the Timer callback for the current window
*/
void FGAPIENTRY glutTimerFunc( unsigned int timeOut, void (* callback)( int ),
int timerID )
{
SFG_Timer *timer, *node;
glutes_assert_ready;
if( (timer = fgState.FreeTimers.Last) )
{
fgListRemove( &fgState.FreeTimers, &timer->Node );
}
else
{
if( ! (timer = malloc(sizeof(SFG_Timer))) )
fgError( "Fatal error: "
"Memory allocation failure in glutTimerFunc()\n" );
}
timer->Callback = callback;
timer->ID = timerID;
timer->TriggerTime = fgElapsedTime() + timeOut;
for( node = fgState.Timers.First; node; node = node->Node.Next )
{
if( node->TriggerTime > timer->TriggerTime )
break;
}
fgListInsert( &fgState.Timers, &node->Node, &timer->Node );
}
