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/* ------------------------ countund~ -------------------------------------- */
/* */
/* Count up to a value and then down to zero */
/* Written by Yves Degoyon (ydegoyon@free.fr). */
/* */
/* 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. */
/* */
/* See file LICENSE for further informations on licensing terms. */
/* */
/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* */
/* Based on PureData by Miller Puckette and others. */
/* */
/* ---------------------------------------------------------------------------- */
#include <sys/types.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/stat.h>
#ifndef MACOSX
#include <malloc.h>
#endif
#include <ctype.h>
#include <unistd.h>
#include <time.h>
#include <sys/time.h>
#include <m_pd.h> /* standard pd stuff */
static char *countund_version = "countund~: count up to a value and then down to zero : author : ydegoyon@free.fr";
static t_class *countund_class;
typedef struct _countund
{
t_object x_obj;
t_int x_limit;
t_int x_value;
t_int x_up;
} t_countund;
/* clean up */
static void countund_free(t_countund *x)
{
}
static void *countund_new(t_float flimit)
{
t_countund *x = (t_countund *)pd_new(countund_class);
outlet_new(&x->x_obj, &s_float);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("limit"));
if ( flimit < 0 ) {
post( "countund~: wrong creation argument" );
return NULL;
}
x->x_limit = (int) flimit;
x->x_value = 0;
x->x_up = 1;
return(x);
}
static void *countund_limit(t_countund* x, t_float flimit)
{
if ( flimit < 0 ) {
post( "countund~: wrong count limit" );
return;
} else {
x->x_limit=(int)flimit;
}
}
static void *countund_bang(t_countund *x)
{
if ( x->x_up ) {
x->x_value+=1;
if (x->x_value>x->x_limit) {
x->x_value=x->x_limit-1;
x->x_up=0;
}
} else {
x->x_value-=1;
if (x->x_value<0) {
x->x_value=1;
x->x_up=1;
}
}
outlet_float( x->x_obj.ob_outlet, x->x_value );
return;
}
void countund_setup(void)
{
post(countund_version);
countund_class = class_new(gensym("countund"), (t_newmethod)countund_new,
(t_method)countund_free,
sizeof(t_countund), 0, A_DEFFLOAT, 0);
class_addmethod( countund_class, (t_method)countund_bang, &s_bang, 0);
class_addmethod( countund_class, (t_method)countund_limit, gensym("limit"), A_FLOAT, 0);
}
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