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
72
73
74
75
|
/*
32/64 bits A-Chaos Lib in openFrameworks
(c) s373.net/x 2004, 2012, 2015
http://s373.net/code/A-Chaos-Lib/A-Chaos.html
programmed by Andre Sier, revised 2015
License: MIT
*/
#pragma once
#include "AChaosBase.h"
#define rosx(y,z) -((y)+(z))
#define rosy(x,y,a) (x)+((a)*(y))
#define rosz(x,z,b,c) (b)+((x)*(z))-((c)*(z))
class AChaosRossler : public AChaosBase {
public:
REAL a, b, c, nx, ny, nz,dt;
vector<string> param_labels={"a","b","c","","","","dt"};
AChaosRossler(){}
~AChaosRossler(){}
virtual vector<string> &get_param_labels(){return this->param_labels;};
virtual void setup(REAL * params = NULL){
AChaosBase::init(params, 7, 3);
if(params==NULL){
//classic rossler
a = 0.2;
b = 0.2;
c = 5.7;
nx = 1;
ny = 1;
nz = 1;
dt = 0.01;
REAL p[7] = {a,b,c,nx,ny,nz,dt};
set(p);
} else { set(params); }
}
void reset(){
a = iv[0];
b = iv[1];
c = iv[2];
nx = iv[3];
ny = iv[4];
nz = iv[5];
dt = iv[6];
}
void calc(){
REAL fx, fy, fz, ffx, ffy, ffz, dt2 = dt/2.;
REAL dtfx, dtfy, dtfz;
fx = rosx(ny,nz);
fy = rosy(nx,ny,a);
fz = rosz(nx,nz,b,c);
ffx = rosx((ny+dt*fy), (nz+(dt*fz)));
ffy = rosy((nx+dt*nx), (ny+dt*ny), a);
ffz = rosz((nx+dt*fx), (nz+dt*nz), b, c);
nx += (dt2*(fx+ffx));
ny += (dt2*(fy+ffy));
nz += (dt2*(fz+ffz));
ov[0] = nx;
ov[1] = ny;
ov[2] = nz;
}
};
|
