83 lines
1.5 KiB
Text
83 lines
1.5 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{Ptuple}
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combine a list of streams to a stream of lists@section{related}
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Classes/Ppar
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@section{categories}
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Streams-Patterns-Events>Patterns>List
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@section{description}
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At each iteration, Ptuple returns a tuple (array) combining the output of each of the patterns in the list. When any of the patterns returns a nil, Ptuple ends that 'repeat' and restarts all of the streams.
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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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list
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an link::Classes/Array:: of patterns.
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@section{argument}
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repeats
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an link::Classes/Integer:: or inf.
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@section{Examples}
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@racketblock[
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(
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var a, b;
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a = Pseq([1, 2, 3], inf);
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b = Pseq([65, 76], inf);
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c = Ptuple([a, a, b], inf);
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x = c.asStream;
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8.do({ x.next.postln; });
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)
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(
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var a, b;
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a = Pseq([1, 2, 3], inf);
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b = Pseq([65, 76], 3); // stops after 3 cycles
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c = Ptuple([a, a, b], 4); // stops after 4 cycles
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x = c.asStream;
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8.do({ x.next.postln; });
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)
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//Ptuple used as a sequence of pitches (chords)
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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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a = Pseq([73, 71, 69, 69, 65, 64], inf);
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b = Pseq([0, 0, 0, 4, 0, 3, 2], inf) + a;
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c = Ptuple([a, b], inf);
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x = c.asStream;
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Routine({
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var chord;
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loop({
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chord = x.next.postln.midicps;
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(instrument: \help_sinegrain, freq: chord).play;
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0.2.wait;
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})
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}).play;
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)
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::
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]
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