diff options
Diffstat (limited to 'cyclone/sickle/linedrive.c')
| -rw-r--r-- | cyclone/sickle/linedrive.c | 128 |
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); } |