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/*
* simile : windowed similarity comparison
* Copyright (C) 2005 edward kelly <morph_2016@yahoo.co.uk>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#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_sethelpsymbol(simile_class, gensym("help-simile"));
class_addbang(simile_class, simile_bang);
class_addfloat(simile_class, simile_float);
}
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