51 lines
935 B
Text
51 lines
935 B
Text
|
#lang scribble/manual
|
||
|
|
@(require (for-label racket))
|
||
|
|
|
||
|
|
@title{Pxrand}
|
||
|
|
embed values randomly chosen from a list@section{related}
|
||
|
|
Classes/Prand, Classes/Pwrand
|
||
|
|
@section{categories}
|
||
|
|
Streams-Patterns-Events>Patterns>List
|
||
|
|
|
||
|
|
@section{description}
|
||
|
|
|
||
|
|
Like link::Classes/Prand::, returns one item from the list at random for each repeat, but Pxrand never repeats the same element twice in a row.
|
||
|
|
|
||
|
|
@section{Examples}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
@racketblock[
|
||
|
|
(
|
||
|
|
var a, b;
|
||
|
|
a = Pxrand.new(#[1, 2, 3], 10); // return 10 items
|
||
|
|
b = a.asStream;
|
||
|
|
11.do({ b.next.postln; });
|
||
|
|
)
|
||
|
|
|
||
|
|
//Pxrand used as a sequence of pitches:
|
||
|
|
|
||
|
|
(
|
||
|
|
SynthDef(\help_sinegrain,
|
||
|
|
{ arg out=0, freq=440, sustain=0.05;
|
||
|
|
var env;
|
||
|
|
env = EnvGen.kr(Env.perc(0.01, sustain, 0.2), doneAction: Done.freeSelf);
|
||
|
|
Out.ar(out, SinOsc.ar(freq, 0, env))
|
||
|
|
}).add;
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
(
|
||
|
|
a = Pxrand(#[60, 61, 63, 65, 72], inf).asStream;
|
||
|
|
Routine({
|
||
|
|
loop({
|
||
|
|
Synth(\help_sinegrain, [\freq, a.next.midicps]);
|
||
|
|
0.1.wait;
|
||
|
|
})
|
||
|
|
}).play;
|
||
|
|
)
|
||
|
|
::
|
||
|
|
]
|
||
|
|
|
||
|
|
|