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/*
* delta and delta-of-delta values.
* Copyright (c) 2012, Dr Edward Kelly <morph_2016@yahoo.co.uk>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
*
* provided with the distribution.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "m_pd.h"
t_class *doubledelta_class;
typedef struct _doubledelta
{
t_object x_obj;
t_float 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_addbang(doubledelta_class, doubledelta_bang);
class_addfloat(doubledelta_class, doubledelta_float);
}
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