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
|
class:: Oregonator
summary:: Chemical reaction modelling Oscillator
categories:: UGens>Generators>Chaotic
//SLUGens released under the GNU GPL as extensions for SuperCollider 3, by Nick Collins, http://composerprogrammer.com/index.html
keyword:: SLUGens
Description::
Euler ODE solver implementation of the Oregonator equations (http://www.scholarpedia.org/article/Oregonator).
x' = epsilon* (q*y - x*y + x*(1-x) )
y' = mu* (-q*y -x*y +z)
z' = x-y
All inputs can have .kr rate UGens plugged in.
The Oregonator can blow up, treat with caution.
classmethods::
method::ar
argument::reset
If > 0.0, restart with new initial conditions sampled from initx, inity, initz
argument::rate
update rate for a sample step
argument::epsilon
equation constant
argument::mu
equation constant
argument::q
equation constant
argument::initx
reset value for x
argument::inity
reset value for y
argument::initz
reset value for z
Examples::
code::
//hits fixed points too quickly
{Out.ar(0,Pan2.ar(0.1*Oregonator.ar(Impulse.kr(10),MouseX.kr(0.01,1,'exponential')),0.0))}.play
{Out.ar(0,Oregonator.ar(Impulse.kr(100),0.1, 0.1, 0.5, 0.2,initx:0.1, inity:-0.5, initz:0.7))}.plot(0.1)
{Out.ar(0,Pan2.ar(0.1*Oregonator.ar(Impulse.kr(100),0.1, 0.1, 0.5, 0.2,initx:0.1, inity:-0.5, initz:MouseX.kr)[0],0.0))}.play
{Out.ar(0,Pan2.ar(0.1*Oregonator.ar(Impulse.kr(MouseX.kr(100,1000)),0.1, 0.2, 0.5, 0.2,initx:MouseY.kr, inity:-0.5, initz:0.5)[0],0.0))}.play
{Out.ar(0,Pan2.ar(0.1*Oregonator.ar(Impulse.kr(MouseX.kr(10,1000,'exponential')),0.3, 0.1,0.1, 0.2,initx:MouseY.kr(0.1,1.0), inity:-0.5, initz:0.5)[0],0.0))}.play
{Out.ar(0,Pan2.ar(0.1*Oregonator.ar(Impulse.kr(MouseX.kr(100,1000)),0.1, 0.2, 0.5, 0.2,initx:MouseY.kr, inity:-0.5, initz:0.5)[1],0.0))}.play
{Out.ar(0,Pan2.ar(0.1*Mix(Oregonator.ar(Impulse.kr(MouseX.kr(10,1000)),0.1, 0.2, 0.5, 0.2,initx:MouseY.kr, inity:-0.5, initz:0.5)),0.0))}.play
::
|
