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[supercollider.git] / HelpSource / Classes / Plprand.schelp
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1 class:: Plprand
2 summary:: random values that tend toward lo
3 related:: Classes/Phprand
4 categories:: Streams-Patterns-Events>Patterns>Random
6 ClassMethods::
8 method::new
10 argument::lo
11 lower boundary of values.
13 argument::hi
14 upper boundary of values.
16 argument::length
17 number of values produced.
19 Examples::
21 code::
23 var a, c, w;
24 a = Plprand(0.0, 1.0, inf);
25 c = a.asStream.nextN(500);
26 w = Window.new("Plprand", Rect(10, 10, 540, 800));
27 // plot the values
28 c.plot(bounds: Rect(10, 10, 520, 380), discrete: true, parent: w);
29 // a histogram of the values
30 c.histo(500).plot(bounds: Rect(10, 410, 520, 380), parent: w);
34 // sound example
36 SynthDef(\help_sinegrain,
37         { arg out=0, freq=440, sustain=0.05;
38                 var env;
39                 env = EnvGen.kr(Env.perc(0.01, sustain, 0.2), doneAction:2);
40                 Out.ar(out, SinOsc.ar(freq, 0, env))
41         }).add;
46 var a;
47 a = Plprand(0.0, 1.0, inf).asStream;
49         loop {
50                 Synth(\help_sinegrain, [\freq, a.next * 600 + 300]);
51                 0.02.wait;
52         }
53 }.fork;
56 // this is equivalent to:
59         loop {
60                 Synth(\help_sinegrain, [\freq, min(rrand(0.0, 1.0), rrand(0.0, 1.0)) * 600 + 300]);
61                 0.02.wait;
62         }
63 }.fork;