diff options
| author | Hans-Christoph Steiner <eighthave@users.sourceforge.net> | 2006-08-09 04:12:32 +0000 |
|---|---|---|
| committer | Hans-Christoph Steiner <eighthave@users.sourceforge.net> | 2006-08-09 04:12:32 +0000 |
| commit | bb144a13c634babcbba02c001479564aaf3b0dc8 (patch) | |
| tree | b9c858ee69370a7461cb3784458d076855fe432a /range.c | |
| parent | 403fe50cdc15da44c6523b4a31277970e50ca618 (diff) | |
cleaned up buildsrc and unfiltered sections and turned them into libdirs; made 'pan' libdir and cleaned up source dir for easy makefile install rules; created 'deprecated' libdir and moved cruft there
svn path=/trunk/externals/hcs/; revision=5529
Diffstat (limited to 'range.c')
| -rw-r--r-- | range.c | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/range.c b/range.c deleted file mode 100644 index 106cd62..0000000 --- a/range.c +++ /dev/null @@ -1,128 +0,0 @@ -/* ------------------------- range ------------------------------------------ */
-/* */
-/* Ranges input to lie within an output range. */
-/* 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 <stdio.h>
-#include <math.h>
-
-static char *version = "range v0.2, written by Olaf Matthes <olaf.matthes@gmx.de>";
-
-typedef struct range
-{
- t_object x_ob;
- t_float x_f; /* current input value */
- t_float x_il; /* low border of input range */
- t_float x_ih; /* high border of input range */
- t_float x_ol; /* low border of output range */
- t_float x_oh; /* high border of output range */
- t_float x_logcoeff; /* log-coefficient */
- t_outlet *x_outlet1; /* result */
-} t_range;
-
-static void range_float(t_range *x, t_floatarg f)
-{
- t_float ir = x->x_ih - x->x_il;
- t_float or = x->x_oh - x->x_ol;
- double oq;
- double result;
- double k;
- if(ir == 0)
- {
- post("range: input range must not be 0");
- return;
- }
- /* we accept an output range of 0 in case someone really wants this */
- if(!x->x_logcoeff) /* linear */
- {
- k = (or / ir);
- result = ((f - x->x_il) * k) + x->x_ol;
- }
- else /* logarythmical range */
- {
- oq = x->x_oh / x->x_ol;
- // k = (log((double)oq)/log(x->x_logcoeff))/((double)ir);
- k = log((double)oq)/((double)ir);
-
- if(x->x_ol)
- {
- // result = (double)x->x_ol*exp(k*(double)(f - x->x_il)*log(x->x_logcoeff));
- result = (double)x->x_ol*exp(k*(double)(f - x->x_il));
- }
- else
- {
- /* in case the low output is 0 we have to cheat... */
- /* okay, here's the chating: we calculate for a lower out limit
- of 1 and remove this shift after the calculation */
- result = ((double)(x->x_ol+1)*exp(k*(double)(f - x->x_il)))-1.0;
- }
- }
-
- x->x_f = f; /* save current input value */
-
- outlet_float(x->x_outlet1, result);
-}
-
-static void range_bang(t_range *x)
-{
- range_float(x, x->x_f); /* recalculate result */
-}
-
-static t_class *range_class;
-
-static void *range_new(t_floatarg fil, t_floatarg fih, t_floatarg fol, t_floatarg foh, t_floatarg flc)
-{
- t_range *x = (t_range *)pd_new(range_class);
-
- floatinlet_new(&x->x_ob, &x->x_il);
- floatinlet_new(&x->x_ob, &x->x_ih);
- floatinlet_new(&x->x_ob, &x->x_ol);
- floatinlet_new(&x->x_ob, &x->x_oh);
- floatinlet_new(&x->x_ob, &x->x_logcoeff);
-
- x->x_outlet1 = outlet_new(&x->x_ob, gensym("float"));
-
- /* default values taken from Max's range */
- x->x_il = fil;
- x->x_ih = fih;
- if(!x->x_ih)x->x_ih = 127.0;
- x->x_ol = fol;
- x->x_oh = foh;
- if(!x->x_oh)x->x_oh = 1.0;
- x->x_logcoeff = flc;
- x->x_f = 0;
-
- post(version);
-
- return (void *)x;
-}
-
-void range_setup(void)
-{
- range_class = class_new(gensym("range"), (t_newmethod)range_new,
- 0, sizeof(t_range), 0, A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, A_DEFFLOAT, 0);
- class_addfloat(range_class, range_float);
- class_addbang(range_class, range_bang);
- class_sethelpsymbol(range_class, gensym("range.pd"));
-}
-
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