70 lines
1.2 KiB
Text
70 lines
1.2 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{Pfunc}
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Function pattern@section{categories}
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Streams-Patterns-Events>Patterns>Function
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@section{related}
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Classes/Pfuncn
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@section{description}
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Returns a link::Classes/Stream:: that returns values from the
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@racketblock[nextFunc::.
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]
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@section{classmethods}
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@section{method}
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new
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@section{argument}
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nextFunc
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Stream function. In an event stream receives the current link::Classes/Event:: as argument.
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@section{argument}
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resetFunc
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Function that is called when the stream is reset. In an event stream receives the current link::Classes/Event:: as argument.
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@section{examples}
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@racketblock[
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(
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var a, x;
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a = Pfunc({ exprand(0.1, 2.0) + #[1, 2, 3, 6].choose }, { \reset.postln });
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x = a.asStream;
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x.nextN(20).postln;
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x.reset;
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)
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::
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Sound example
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]
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@racketblock[
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(
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SynthDef(\help_sinegrain,
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{ arg out = 0, freq = 440, sustain = 0.05;
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var env;
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env = EnvGen.kr(Env.perc(0.01, sustain, 0.2), doneAction: Done.freeSelf);
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Out.ar(out, SinOsc.ar(freq, 0, env))
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}).add;
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)
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(
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var a;
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a = Pfunc({ exprand(0.1, 0.3) + #[1, 2, 3, 6, 7].choose }).asStream;
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{
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a.do { |val|
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Synth(\help_sinegrain, [\freq, val * 100 + 300]);
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0.02.wait;
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}
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}.fork;
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)
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::
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]
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