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/*
* positive - wraps floats back into positive numbers from negative
* Copyright (c) 2005, 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 *positive_class;
typedef struct _positive
{
t_object x_obj;
t_float value;
t_outlet *positive;
} t_positive;
void positive_float(t_positive *y, t_floatarg f)
{
y->value = f;
if(y->value < 0)
{
int i = (int)y->value;
i = i * -1 + 1;
y->value += (float)i;
}
outlet_float(y->positive, y->value);
}
void positive_bang(t_positive *y)
{
outlet_float(y->positive, y->value);
}
void *positive_new(t_floatarg f)
{
t_positive *y = (t_positive *)pd_new(positive_class);
y->value = f;
y->positive = outlet_new(&y->x_obj, gensym("float"));
return(void *)y;
}
void positive_setup(void)
{
positive_class = class_new(gensym("positive"),
(t_newmethod)positive_new,
0, sizeof(t_positive),
0, A_DEFFLOAT, 0);
post("positive always returns a positive value");
post("negative values are shifted up");
class_addbang(positive_class, positive_bang);
class_addfloat(positive_class, positive_float);
}
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