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Diffstat (limited to 'cyclone/sickle/linedrive.c')
-rw-r--r--cyclone/sickle/linedrive.c128
1 files changed, 98 insertions, 30 deletions
diff --git a/cyclone/sickle/linedrive.c b/cyclone/sickle/linedrive.c
index 8b133ab..99c3720 100644
--- a/cyclone/sickle/linedrive.c
+++ b/cyclone/sickle/linedrive.c
@@ -1,67 +1,134 @@
-/* Copyright (c) 2002-2003 krzYszcz and others.
+/* Copyright (c) 2002-2005 krzYszcz and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
-/* CHECKME polarity */
-
#include <math.h>
#include "m_pd.h"
+#include "common/fitter.h"
#if defined(NT) || defined(MACOSX)
#define logf log
#define expf exp
#endif
-static t_class *linedrive_class;
+#define LINEDRIVE_MININPUT .5 /* CHECKED */
+#define LINEDRIVE_MINCURVE 1. /* CHECKED */
+
+#define LINEDRIVE_INPUTEPSILON 1e-19f
+#define LINEDRIVE_CURVEEPSILON 1e-19f
typedef struct _linedrive
{
t_object x_ob;
+ t_float x_usermaxin;
+ t_float x_usermaxout;
+ t_float x_usercurve;
t_float x_maxin;
t_float x_maxout;
t_float x_expcoef;
t_float x_lincoef;
- t_atom x_vec[2];
- int x_linear;
+ int x_islinear;
+ int x_iscompatible;
+ t_atom x_outvec[2];
} t_linedrive;
+static t_class *linedrive_class;
+
static void linedrive_float(t_linedrive *x, t_floatarg f)
{
- float outval = f - x->x_maxin;
- if (outval >= 0)
- outval = x->x_maxout; /* CHECKED */
- else if (x->x_linear)
- outval = x->x_maxout + outval * x->x_lincoef;
+ t_float outval;
+ if (x->x_iscompatible)
+ {
+ if (f < LINEDRIVE_MININPUT) /* CHECKED */
+ outval = 0.;
+ else if (f >= x->x_maxin) /* CHECKED */
+ outval = x->x_maxin;
+ else
+ outval = expf((f - x->x_maxin) * x->x_expcoef) * x->x_maxout;
+ }
else
- outval = expf(outval * x->x_expcoef) * x->x_maxout;
- SETFLOAT(x->x_vec, outval);
- outlet_list(((t_object *)x)->ob_outlet, 0, 2, x->x_vec);
+ {
+ if (x->x_islinear)
+ outval = x->x_maxout + (f - x->x_maxin) * x->x_lincoef;
+ else if (f < -LINEDRIVE_INPUTEPSILON)
+ outval = -expf((-f - x->x_maxin) * x->x_expcoef) * x->x_maxout;
+ else if (f > LINEDRIVE_INPUTEPSILON)
+ outval = expf((f - x->x_maxin) * x->x_expcoef) * x->x_maxout;
+ else
+ outval = 0.;
+ }
+ SETFLOAT(x->x_outvec, outval);
+ outlet_list(((t_object *)x)->ob_outlet, 0, 2, x->x_outvec);
}
-static void *linedrive_new(t_floatarg maxin, t_floatarg maxout,
- t_floatarg curve, t_floatarg deltime)
+static void linedrive_calculate(t_linedrive *x)
{
- t_linedrive *x = (t_linedrive *)pd_new(linedrive_class);
- x->x_maxin = (maxin < 1.0e-20f && maxin > -1e-20f ? 0 : maxin);
- x->x_maxout = maxout;
- if (curve < 1.0e-20f) curve = 1.0; /* a bug in msp? */
- if (curve == 1.0)
+ t_float maxin = x->x_usermaxin;
+ t_float maxout = x->x_usermaxout;
+ t_float curve = x->x_usercurve;
+ if (x->x_iscompatible = fittermax_get())
{
- x->x_expcoef = 0;
- x->x_lincoef = (x->x_maxin == 0 ? 0 : x->x_maxout / x->x_maxin);
- x->x_linear = 1;
+ /* CHECKED */
+ x->x_maxin = (maxin > LINEDRIVE_MININPUT ? maxin : LINEDRIVE_MININPUT);
+ /* CHECKED */
+ x->x_expcoef = (curve > LINEDRIVE_MINCURVE ? logf(curve) : 0.);
+ x->x_lincoef = 0.;
+ x->x_islinear = 0;
}
- else {
- x->x_expcoef = logf(curve);
- x->x_lincoef = 0;
- x->x_linear = 0;
+ else
+ {
+ if (maxin >= -LINEDRIVE_INPUTEPSILON && maxin <= LINEDRIVE_INPUTEPSILON)
+ {
+ x->x_maxin = 0.;
+ x->x_expcoef = 0.;
+ x->x_lincoef = 0.;
+ x->x_islinear = 1;
+ }
+ else if (curve >= (1. - LINEDRIVE_CURVEEPSILON) &&
+ curve <= (1. + LINEDRIVE_CURVEEPSILON))
+ {
+ x->x_maxin = maxin;
+ x->x_expcoef = 0.;
+ x->x_lincoef = maxout / maxin;
+ x->x_islinear = 1;
+ }
+ else
+ {
+ if (maxin < 0.)
+ {
+ x->x_maxin = -maxin;
+ maxout = -maxout;
+ }
+ else x->x_maxin = maxin;
+ if (curve < LINEDRIVE_CURVEEPSILON)
+ curve = LINEDRIVE_CURVEEPSILON;
+ x->x_expcoef = logf(curve);
+ x->x_lincoef = 0.;
+ x->x_islinear = 0;
+ }
}
- SETFLOAT(&x->x_vec[1], deltime); /* CHECKED: any value accepted */
- floatinlet_new((t_object *)x, &x->x_vec[1].a_w.w_float);
+ x->x_maxout = maxout; /* CHECKED negative value accepted and used */
+}
+
+static void *linedrive_new(t_floatarg maxin, t_floatarg maxout,
+ t_floatarg curve, t_floatarg deltime)
+{
+ t_linedrive *x = (t_linedrive *)pd_new(linedrive_class);
+ x->x_usermaxin = maxin;
+ x->x_usermaxout = maxout;
+ x->x_usercurve = curve;
+ linedrive_calculate(x);
+ SETFLOAT(&x->x_outvec[1], deltime); /* CHECKED any value accepted */
+ floatinlet_new((t_object *)x, &x->x_outvec[1].a_w.w_float);
outlet_new((t_object *)x, &s_list);
return (x);
}
+static void linedrive_fitter(void)
+{
+ /* FIXME for all objects in scope do recalculate */
+}
+
void linedrive_setup(void)
{
linedrive_class = class_new(gensym("linedrive"),
@@ -70,4 +137,5 @@ void linedrive_setup(void)
A_DEFFLOAT, A_DEFFLOAT,
A_DEFFLOAT, A_DEFFLOAT, 0);
class_addfloat(linedrive_class, linedrive_float);
+ fitter_setup(linedrive_class, linedrive_fitter);
}