86 lines
1.7 KiB
Text
86 lines
1.7 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{AppClock}
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@section{categories}
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Scheduling>Clocks
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Clock running on main application thread@section{related}
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Classes/SystemClock, Classes/TempoClock
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@section{description}
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SystemClock is more accurate, but cannot call GUI primitives.
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You will need to use the link::Classes/SystemClock:: to get accurate/musical scheduling.
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See link::Classes/Clock:: for general explanation of how clocks operate.
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@section{CLASSMETHODS}
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@section{private}
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initClass, prSchedNotify
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@section{method}
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sched
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The float you return specifies the delta to resched the function for. Returning nil will stop the task from being rescheduled.
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@racketblock[
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(
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AppClock.sched(0.0,{ arg time;
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["AppClock has been playing for ",time].postln;
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rrand(0.1,0.9);
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});
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)
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::
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]
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@racketblock[
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(
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AppClock.sched(2.0,{
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"2.0 seconds later".postln;
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nil;
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});
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)
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::
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]
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@section{method}
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clear
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Clear the AppClock's scheduler to stop it.
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@racketblock[
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AppClock.clear;
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::
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]
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@section{method}
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play
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The link::Classes/Routine:: (or link::Classes/Task::) yields a float value indicating the delta (secs) for the AppClock to wait until resuming the Routine.
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@racketblock[
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(
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var w, r;
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w = Window.new("trem", Rect(512, 256, 360, 130));
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w.front;
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r = Routine({ arg appClockTime;
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["AppClock has been playing for secs:",appClockTime].postln;
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60.do({ arg i;
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0.05.yield;
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w.bounds = w.bounds.moveBy(10.rand2, 10.rand2);
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w.alpha = cos(i*0.1pi)*0.5+0.5;
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});
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1.yield;
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w.close;
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});
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AppClock.play(r);
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)
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::
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]
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@section{method}
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tick
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AppClock.tick is called periodically by the SuperCollider language interpreter. This updates the link::Classes/Scheduler:: and causes any scheduled tasks to be executed. You should never call this method yourself.
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