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/*
* simile : windowed similarity comparison
* Copyright (c) 2005-2023 Edward Kelly
* Forinformaion on usage and distribution, and for a DICLAIMER OF ALL
* WARRANTIES, see the file "LICENSE.txt," in this distribution. */
#include "m_pd.h"
typedef struct _simile {
t_object x_obj;
t_float x_win;
t_float min;
t_float sign;
t_float x_in1;
t_float x_in2;
t_float x_result;
t_outlet *x_sim, *x_sign;
} t_simile;
void simile_float(t_simile *x, t_floatarg in1) {
x->x_in1 = in1;
x->x_win = x->x_win > 0 ? x->x_win : 0.01; /* defaults to 0.01 so that we avoid /0 errors */
x->min = ( x->x_in1 > x->x_in2 ) ? (x->x_in1 - x->x_in2) : (x->x_in2 - x->x_in1);
x->sign = ( x->x_in1 >= x->x_in2 ) ? 1 : -1;
x->x_result = 1 / ((x->min / x->x_win) + 1);
outlet_float(x->x_sign, x->sign);
outlet_float(x->x_sim, x->x_result);
}
void simile_bang(t_simile *x) {
outlet_float(x->x_sign, x->sign);
outlet_float(x->x_sim, x->x_result);
}
t_class *simile_class;
void *simile_new(t_floatarg x_win) {
t_simile *x = (t_simile *)pd_new(simile_class);
x->x_sim = outlet_new(&x->x_obj, gensym("float"));
x->x_sign = outlet_new(&x->x_obj, gensym("float"));
floatinlet_new(&x->x_obj, &x->x_in2);
floatinlet_new(&x->x_obj, &x->x_win);
return (void *)x;
}
void simile_setup(void) {
simile_class = class_new(gensym("simile"),
(t_newmethod)simile_new,
0, sizeof(t_simile),
0, A_DEFFLOAT, 0);
post("|------------->simile<--------------|");
post("|->weighted similarity measurement<-|");
post("|-->edward<----->kelly<----->2005<--|");
class_addbang(simile_class, simile_bang);
class_addfloat(simile_class, simile_float);
}
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