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#include "m_pd.h"
#include <math.h>
typedef struct _datachunk
{
t_atom data[1024];
} t_datachunk;
typedef struct _weightonset
{
t_object x_obj;
t_float multiplier, accumulator, divider, divaccum, weighted, increment;
t_float length, attack;
t_datachunk x_datachunk;
t_outlet *waverage, *datachunk;
} t_weightonset;
t_class *weightonset_class;
void weightonset_float (t_weightonset *x, t_floatarg fin)
{
if(x->length < 1024)
{
int len = (int)x->length;
SETFLOAT(&x->x_datachunk.data[len], fin);
if(x->length < x->attack)
{
int i;
float weight = 1;
x->increment = x->length - x->attack;
for(i=0;i<x->increment;i++)
{
weight = weight*x->multiplier;
}
x->accumulator += fin*weight;
x->divaccum += weight;
x->weighted = x->accumulator / x->divaccum;
outlet_float(x->waverage, x->weighted);
}
else if(x->length == x->attack)
{
x->divider = 1;
x->divaccum += 1;
x->accumulator += fin*x->divider;
x->weighted = x->accumulator / x->divaccum;
x->divider *= x->multiplier;
x->divaccum += x->divider;
outlet_float(x->waverage, x->weighted);
}
else
{
x->accumulator += fin*x->divider;
x->weighted = x->accumulator / x->divaccum;
x->divider *= x->multiplier;
x->divaccum += x->divider;
outlet_float(x->waverage, x->weighted);
}
x->length += 1;
}
}
void weightonset_bang (t_weightonset *x)
{
int (len) = (int)x->length;
outlet_list(x->datachunk, gensym("list"), len, x->x_datachunk.data);
x->accumulator = 0;
x->length = 0;
if(x->attack > 0)
{
x->divider = 1;
x->divaccum = 1;
}
else if (x->attack == 0)
{
x->divider = 0;
x->divaccum = 0;
}
}
void *weightonset_new(t_floatarg f1, t_floatarg f2)
{
t_weightonset *x = (t_weightonset *)pd_new(weightonset_class);
x->multiplier = f1 != 0 ? f1 : 0.5;
x->accumulator = 0;
x->divider = f2 > 0 ? 1 : 0;
x->divaccum = f2 > 0 ? 1 : 0;
x->length = 0;
x->attack = f2;
floatinlet_new(&x->x_obj, &x->multiplier);
floatinlet_new(&x->x_obj, &x->attack);
x->waverage = outlet_new(&x->x_obj, &s_float);
x->datachunk = outlet_new(&x->x_obj, &s_list);
return (void *)x;
}
void weightonset_setup(void) {
weightonset_class = class_new(gensym("weightonset"),
(t_newmethod)weightonset_new,
0, sizeof(t_weightonset),
0, A_DEFFLOAT, A_DEFFLOAT, 0);
post("input values become less and less important");
post("as entropy brings alternative rewards");
class_sethelpsymbol(weightonset_class, gensym("help-weightonset"));
class_addbang(weightonset_class, weightonset_bang);
class_addfloat(weightonset_class, weightonset_float);
}
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