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/*
* Chaotic function objects
*/
#include "m_pd.h"
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
static t_class *logistic_class;
static t_class *henon_class;
static t_class *lorenz_class;
typedef struct _logistic {
t_object x_obj;
t_float x;
t_float a;
t_outlet *note_out;
} t_logistic;
void logistic_bang(t_logistic *x)
{
if (x->a > 4) x->a = 4;
if (x->a <= 0) x->a = 0.01;
outlet_float(x->note_out, x->x);
x->x = x->a*x->x*(1-x->x);
}
void *logistic_new(t_floatarg f)
{
t_logistic *x = (t_logistic *)pd_new(logistic_class);
x->a = f;
x->x = 0.5;
x->note_out = outlet_new(&x->x_obj,&s_float);
floatinlet_new(&x->x_obj, &x->a);
return (void *)x;
}
typedef struct _henon {
t_object x_obj;
t_float x,y,B,A;
t_outlet *x_out, *y_out;
} t_henon;
void henon_bang(t_henon *x)
{
outlet_float(x->x_out, x->x);
outlet_float(x->y_out, x->y);
x->x = x->y+1-x->A*x->x*x->x;
x->y = x->B*x->x;
}
void *henon_new(t_floatarg f1,t_floatarg f2)
{
t_henon *x = (t_henon *)pd_new(henon_class);
x->A = f1;
x->B = f2;
x->x = 0;
x->y = 0;
x->x_out = outlet_new(&x->x_obj,&s_float);
x->y_out = outlet_new(&x->x_obj,&s_float);
floatinlet_new(&x->x_obj, &x->A);
floatinlet_new(&x->x_obj, &x->B);
return (void *)x;
}
typedef struct _lorenz {
t_object x_obj;
t_float x,y,z,B,R,S,xdot,ydot,zdot,dt;
t_outlet *x_out, *y_out, *z_out;
} t_lorenz;
void lorenz_bang(t_lorenz *x)
{
outlet_float(x->x_out, x->x);
outlet_float(x->y_out, x->y);
outlet_float(x->z_out, x->z);
x->xdot = x->S * (x->y - x->x);
x->ydot = x->R * x->x - x->y - (x->x * x->z);
x->zdot = x->x * x->y - x->B * x->z;
x->x = x->x + x->xdot * x->dt;
x->y = x->y + x->ydot * x->dt;
x->z = x->z + x->zdot * x->dt;
}
void *lorenz_new(t_floatarg f1,t_floatarg f2,t_floatarg f3,t_floatarg f4)
{
t_lorenz *x = (t_lorenz *)pd_new(lorenz_class);
x->S = f1;
x->R = f2;
x->B = f3;
x->x = 0.1;
x->y = 0.1;
x->z = 0.1;
x->dt = 0.01;
if (f4 != 0) x->dt = f4;
x->x_out = outlet_new(&x->x_obj,&s_float);
x->y_out = outlet_new(&x->x_obj,&s_float);
x->z_out = outlet_new(&x->x_obj,&s_float);
floatinlet_new(&x->x_obj, &x->S);
floatinlet_new(&x->x_obj, &x->R);
floatinlet_new(&x->x_obj, &x->B);
return (void *)x;
}
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