From 8b0873392ad0db55fdb9d0cdfc670366bc96a9c9 Mon Sep 17 00:00:00 2001 From: Hans-Christoph Steiner Date: Mon, 26 Apr 2010 03:10:47 +0000 Subject: converted maxlib to use libdir template, in preparations for debianizing it svn path=/trunk/externals/maxlib/; revision=13476 --- minus.c | 111 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 minus.c (limited to 'minus.c') diff --git a/minus.c b/minus.c new file mode 100644 index 0000000..c1de401 --- /dev/null +++ b/minus.c @@ -0,0 +1,111 @@ +/* ------------------------- minus ------------------------------------------ */ +/* */ +/* Like '-', but calculates output whenever _any_ of the inlets changes. */ +/* Written by Olaf Matthes (olaf.matthes@gmx.de) */ +/* Get source at http://www.akustische-kunst.org/puredata/maxlib/ */ +/* */ +/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +/* */ +/* Based on PureData by Miller Puckette and others. */ +/* */ +/* ---------------------------------------------------------------------------- */ + +#include "m_pd.h" +#include + +#define MAXSIZE 32 + +static char *version = "minus v0.2, written by Olaf Matthes "; + +typedef struct minus +{ + t_object x_ob; + t_inlet *x_inleft; /* leftmost inlet */ + t_inlet *x_inright; /* right inlet */ + t_outlet *x_outlet; /* result */ + t_int x_numvalues; /* number of values / inlets */ + + t_float x_minusvalue[MAXSIZE]; + +} t_minus; + +static void minus_bang(t_minus *x) +{ + int i; + t_float result = x->x_minusvalue[0]; + for(i = 1; i < x->x_numvalues; i++) + result -= x->x_minusvalue[i]; + outlet_float(x->x_outlet, result); +} + +static void minus_float(t_minus *x, t_floatarg f) +{ + x->x_minusvalue[0] = f; + minus_bang(x); /* calculate result */ +} + +static void minus_ft1(t_minus *x, t_floatarg f) +{ + x->x_minusvalue[1] = f; + minus_bang(x); /* calculate result */ +} + +static t_class *minus_class; + +static void *minus_new(t_symbol *s, t_int argc, t_atom* argv) +{ + int i; + + t_minus *x = (t_minus *)pd_new(minus_class); + x->x_inright = inlet_new(&x->x_ob, &x->x_ob.ob_pd, gensym("float"), gensym("ft1")); + for(i = 2; i < argc; i++) /* create additional inlets, if any */ + { + // inlet_new(&x->x_ob, &x->x_ob.ob_pd, gensym("float"), gensym("ft1")); + floatinlet_new(&x->x_ob, &x->x_minusvalue[i]); + } + x->x_outlet = outlet_new(&x->x_ob, gensym("float")); + + for(i = 0; i < argc; i++) + { + x->x_minusvalue[i] = atom_getfloatarg(i, argc, argv); + } + x->x_numvalues = i; + + return (void *)x; +} + +#ifndef MAXLIB +void minus_setup(void) +{ + minus_class = class_new(gensym("minus"), (t_newmethod)minus_new, + 0, sizeof(t_minus), 0, A_GIMME, 0); + class_addfloat(minus_class, minus_float); + class_addmethod(minus_class, (t_method)minus_ft1, gensym("ft1"), A_FLOAT, 0); + class_addbang(minus_class, (t_method)minus_bang); + + post(version); +} +#else +void maxlib_minus_setup(void) +{ + minus_class = class_new(gensym("maxlib_minus"), (t_newmethod)minus_new, + 0, sizeof(t_minus), 0, A_GIMME, 0); + class_addcreator((t_newmethod)minus_new, gensym("minus"), A_GIMME, 0); + class_addfloat(minus_class, minus_float); + class_addmethod(minus_class, (t_method)minus_ft1, gensym("ft1"), A_FLOAT, 0); + class_addbang(minus_class, (t_method)minus_bang); + class_sethelpsymbol(minus_class, gensym("maxlib/minus-help.pd")); +} +#endif -- cgit v1.2.1