/usr/share/SuperCollider/HelpSource/Classes/Prewrite.schelp is in supercollider-common 1:3.6.6~repack-2-2.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | class:: Prewrite
summary:: rewriting system
related:: Classes/Pfsm
categories:: Streams-Patterns-Events>Patterns>List>Indexing
description::
Lindenmayer system pattern for selfsimilar structures. Its strong::dictionary (or event):: maps one element to an array of child elements. The algorithm replaces iteratively (strong::levels:: deep) elements by arrays of elements starting with the values in the strong::pattern::.
ClassMethods::
method::new
argument::pattern
starting value
argument::dict
a dictionary or an event.
argument::levels
number of levels
code::
IdentityDictionary[
elem1 -> [ otherElements ],
elem2 -> [ otherElements ],
elem2 -> [ otherElements ]
]
::
Examples::
The examples use the code::():: shortcut for link::Classes/Event::.
code::
(
a = Prewrite(0, // start with 0
( 0: #[2,0],
1: #[0,0,1],
2: #[1,0,1]
), 4);
x = a.asStream;
30.do({ x.next.postln });
)
//Prewrite 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:2);
Out.ar(out, SinOsc.ar(freq, 0, env))
}).add;
)
(
a = Prewrite(0, (
0: #[2,0],
1: #[0,0,1],
2: #[1,0,1]
), 4).asStream;
Routine({
loop({
Synth(\help_sinegrain, [\freq, (a.next * 5 + 70).midicps]);
0.1.wait;
})
}).play;
)
::
|