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#include "m_pd.h"
#include <math.h>
typedef struct _steady
{
t_object x_obj;
t_float f_min;
t_float f_max;
t_float f_prev;
t_int resetflag;
t_float f_in, f_maxjump;
t_outlet *max, *min, *smooth;
} t_steady;
t_class *steady_class;
void steady_float (t_steady *x, t_floatarg fin)
{
if (x->resetflag == 0)
{
x->f_max = fin > x->f_max ? fin : x->f_max;
x->f_min = fin < x->f_min ? fin : x->f_min;
outlet_float(x->smooth, fin);
outlet_float(x->min, x->f_min);
outlet_float(x->max, x->f_max);
x->f_prev = fin;
x->resetflag=1;
}
else
{
float min = fin >= x->f_prev ? x->f_prev : fin;
float max = fin <= x->f_prev ? x->f_prev : fin;
fin = (max - min) > x->f_maxjump ? x->f_prev : fin;
x->f_max = fin > x->f_max ? fin : x->f_max;
x->f_min = fin < x->f_min ? fin : x->f_min;
float sm_fin = fabs(fin - x->f_prev) > x->f_maxjump ? x->f_prev : fin;
outlet_float(x->smooth, sm_fin);
outlet_float(x->min, x->f_min);
outlet_float(x->max, x->f_max);
x->f_prev = fin;
}
}
void steady_bang (t_steady *x)
{
outlet_float(x->min, x->f_min);
outlet_float(x->max, x->f_max);
x->f_min = 1e08;
x->f_max = -1e08;
x->resetflag=0;
}
void *steady_new(t_floatarg f)
{
t_steady *x = (t_steady *)pd_new(steady_class);
x->f_min = 1e08;
x->f_max = -1e08;
x->f_maxjump = f;
x->resetflag = 0;
x->f_prev = 0;
floatinlet_new(&x->x_obj, &x->f_maxjump);
x->max = outlet_new(&x->x_obj, gensym("float"));
x->min = outlet_new(&x->x_obj, gensym("float"));
x->smooth = outlet_new(&x->x_obj, gensym("float"));
return (void *)x;
}
void steady_setup(void) {
steady_class = class_new(gensym("steady"),
(t_newmethod)steady_new,
0, sizeof(t_steady),
0, A_DEFFLOAT, 0);
post("|+++++++++++++++++>steady<------------------|");
post("|+>max, min and through must not jump more<-|");
post("|+++++++++>than a specified amount<---------|");
post("|+++>edward<------->kelly<++++++++>2005<----|");
class_sethelpsymbol(steady_class, gensym("help-steady"));
class_addbang(steady_class, steady_bang);
class_addfloat(steady_class, steady_float);
}
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