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#include "m_pd.h"
t_class *doubledelta_class;
typedef struct _doubledelta
{
t_object x_obj;
t_int f_now, f_prev, f_delta, f_delta_prev, f_doubledelta, fa;
t_outlet *delta, *doubledelta;
} t_doubledelta;
void doubledelta_float(t_doubledelta *y, t_floatarg f)
{
y->f_delta_prev = y->f_delta;
y->f_prev = y->f_now;
y->f_now = f;
y->f_delta = y->f_now - y->f_prev;
y->f_doubledelta = y->f_delta - y->f_delta_prev;
outlet_float(y->doubledelta, y->f_doubledelta);
outlet_float(y->delta, y->f_delta);
}
void doubledelta_bang(t_doubledelta *y)
{
outlet_float(y->doubledelta, y->f_doubledelta);
outlet_float(y->delta, y->f_delta);
}
void *doubledelta_new(t_floatarg f)
{
t_doubledelta *y = (t_doubledelta *)pd_new(doubledelta_class);
y->fa = f;
y->delta = outlet_new(&y->x_obj, gensym("float"));
y->doubledelta = outlet_new(&y->x_obj, gensym("float"));
return(void *)y;
}
void doubledelta_setup(void)
{
doubledelta_class = class_new(gensym("doubledelta"),
(t_newmethod)doubledelta_new,
0, sizeof(t_doubledelta),
0, A_DEFFLOAT, 0);
post("delta & delta-delta values, <morph_2016@yahoo.co.uk>");
class_sethelpsymbol(doubledelta_class, gensym("help-ddelta"));
class_addbang(doubledelta_class, doubledelta_bang);
class_addfloat(doubledelta_class, doubledelta_float);
}
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