80 lines
1.2 KiB
Text
80 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{Ppatmod}
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modify a given pattern before passing it into the stream@section{related}
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Classes/Plazy
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@section{categories}
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Streams-Patterns-Events>Patterns>Filter
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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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pattern
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the pattern.
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@section{argument}
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func
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A link::Classes/Function:: that modifies the enclosed pattern and embeds it in the stream.
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@section{argument}
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repeats
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the number of repeats.
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@section{Examples}
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@racketblock[
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(
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a = Ppatmod(
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Pseq([0, 0, 0, 0],1),
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{ arg pat, i;
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var list;
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list = pat.list;
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pat.list = list.put(list.size.rand, 2);
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}, inf);
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x = a.asStream;
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30.do({ x.next.postln });
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)
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//Ppatmod used to modify a pattern that produces a sequence of pitches:
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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 = Pn(
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Ppatmod(
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Pseq([0, 0, 0, 0],1),
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{ arg pat, i;
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var list;
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list = pat.list;
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pat.list = list.put(list.size.rand, 2);
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}, 15),
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inf).asStream;
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Routine({
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loop({
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Synth(\help_sinegrain, [\freq, (a.next*5+77).midicps]);
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0.13.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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