HelpSource/Classes/Ppatmod.schelp

   1 class:: Ppatmod
   2 summary:: modify a given pattern before passing it into the stream
   3 related:: Classes/Plazy
   4 categories:: Streams-Patterns-Events>Patterns>Filter
   5
   6 ClassMethods::
   7
   8 method::new
   9
  10 argument::func
  11 A link::Classes/Function:: that modifies the enclosed pattern and embeds it in the stream.
  12
  13 Examples::
  14
  15 code::
  16 (
  17 a = Ppatmod(
  18         Pseq([0, 0, 0, 0],1),
  19         { arg pat, i;
  20                 var list;
  21                 list = pat.list;
  22                 pat.list = list.put(list.size.rand, 2);
  23         }, inf);
  24
  25 x = a.asStream;
  26 30.do({ x.next.postln });
  27 )
  28
  29
  30 //Ppatmod used to modify a pattern that produces a sequence of pitches:
  31
  32 (
  33 SynthDef(\help_sinegrain,
  34         { arg out=0, freq=440, sustain=0.05;
  35                 var env;
  36                 env = EnvGen.kr(Env.perc(0.01, sustain, 0.2), doneAction:2);
  37                 Out.ar(out, SinOsc.ar(freq, 0, env))
  38         }).add;
  39 )
  40
  41 (
  42 a = Pn(
  43         Ppatmod(
  44                 Pseq([0, 0, 0, 0],1),
  45                 { arg pat, i;
  46                         var list;
  47                         list = pat.list;
  48                         pat.list = list.put(list.size.rand, 2);
  49                 }, 15),
  50 inf).asStream;
  51
  52 Routine({
  53         loop({
  54                 Synth(\help_sinegrain, [\freq, (a.next*5+77).midicps]);
  55                 0.13.wait;
  56         })
  57 }).play;
  58 )
  59 ::