diff options
Diffstat (limited to 'src/z_tabread4.c')
| -rw-r--r-- | src/z_tabread4.c | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/src/z_tabread4.c b/src/z_tabread4.c new file mode 100644 index 0000000..ec61bfa --- /dev/null +++ b/src/z_tabread4.c @@ -0,0 +1,249 @@ + +/* ---------- tabread4: control, interpolating ------------------------ */ +/* hack : 2108:forum::für::umläute:1999 @ iem */ + +#include "zexy.h" + + +/* =================== tabdump ====================== */ + +static t_class *tabdump_class; + +typedef struct _tabdump +{ + t_object x_obj; + t_symbol *x_arrayname; +} t_tabdump; + +static void tabdump_bang(t_tabdump *x, t_float findex) +{ + t_garray *A; + int npoints; + t_float *vec; + + if (!(A = (t_garray *)pd_findbyclass(x->x_arrayname, garray_class))) + error("%s: no such array", x->x_arrayname->s_name); + else if (!garray_getfloatarray(A, &npoints, &vec)) + error("%s: bad template for tabdump", x->x_arrayname->s_name); + else + { + int n; + t_atom *atombuf = (t_atom *)getbytes(sizeof(t_atom)*npoints); + + for (n = 0; n < npoints; n++) SETFLOAT(&atombuf[n], vec[n]); + outlet_list(x->x_obj.ob_outlet, &s_list, npoints, atombuf); + } +} + + +static void tabdump_set(t_tabdump *x, t_symbol *s) +{ + x->x_arrayname = s; +} + +static void *tabdump_new(t_symbol *s) +{ + t_tabdump *x = (t_tabdump *)pd_new(tabdump_class); + x->x_arrayname = s; + outlet_new(&x->x_obj, &s_list); + + return (x); +} + +static void tabdump_helper(void) +{ + post("\n%c tabdump - object : dumps a table as a package of floats", HEARTSYMBOL); + post("'set <table>'\t: read out another table\n" + "'bang'\t\t: dump the table\n" + "outlet\t\t: table-data as package of floats"); + post("creation\t: \"tabdump <table>\""); + +} + +static void tabdump_setup(void) +{ + tabdump_class = class_new(gensym("tabdump"), (t_newmethod)tabdump_new, + 0, sizeof(t_tabdump), 0, A_DEFSYM, 0); + class_addbang(tabdump_class, (t_method)tabdump_bang); + class_addmethod(tabdump_class, (t_method)tabdump_set, gensym("set"), + A_SYMBOL, 0); + + class_addmethod(tabdump_class, (t_method)tabdump_helper, gensym("help"), 0); + class_sethelpsymbol(tabdump_class, gensym("zexy/tabdump")); +} + + +/* =================== tabset ====================== */ + +static t_class *tabset_class; + +typedef struct _tabset +{ + t_object x_obj; + t_symbol *x_arrayname; +} t_tabset; + +static void tabset_float(t_tabset *x, t_floatarg f) +{ + t_garray *A; + int npoints; + t_float *vec; + + if (!(A = (t_garray *)pd_findbyclass(x->x_arrayname, garray_class))) + error("%s: no such array", x->x_arrayname->s_name); + else if (!garray_getfloatarray(A, &npoints, &vec)) + error("%s: bad template for tabset", x->x_arrayname->s_name); + else { + while(npoints--)*vec++=f; + garray_redraw(A); + } +} + +static void tabset_list(t_tabset *x, t_symbol *s, int argc, t_atom* argv) +{ + t_garray *A; + int npoints; + t_float *vec; + + if (!(A = (t_garray *)pd_findbyclass(x->x_arrayname, garray_class))) + error("%s: no such array", x->x_arrayname->s_name); + else if (!garray_getfloatarray(A, &npoints, &vec)) + error("%s: bad template for tabset", x->x_arrayname->s_name); + else { + if (argc>=npoints) + while(npoints--)*vec++=atom_getfloat(argv++); + else { + npoints-=argc; + while (argc--)*vec++=atom_getfloat(argv++); + while (npoints--)*vec++=0; + } + garray_redraw(A); + } +} +static void tabset_set(t_tabset *x, t_symbol *s) +{ + x->x_arrayname = s; +} + +static void *tabset_new(t_symbol *s) +{ + t_tabset *x = (t_tabset *)pd_new(tabset_class); + x->x_arrayname = s; + + return (x); +} + +static void tabset_helper(void) +{ + post("\n%c tabset - object : set a table with a package of floats", HEARTSYMBOL); + post("'set <table>'\t: set another table\n" + "<list>\t\t: set the table" + "<float>\t\t: set the table to constant float\n"); + post("creation\t: \"tabset <table>\""); +} + +static void tabset_setup(void) +{ + tabset_class = class_new(gensym("tabset"), (t_newmethod)tabset_new, + 0, sizeof(t_tabset), 0, A_DEFSYM, 0); + class_addfloat(tabset_class, (t_method)tabset_float); + class_addlist (tabset_class, (t_method)tabset_list); + class_addmethod(tabset_class, (t_method)tabset_set, gensym("set"), + A_SYMBOL, 0); + + class_addmethod(tabset_class, (t_method)tabset_helper, gensym("help"), 0); + class_sethelpsymbol(tabset_class, gensym("zexy/tabset")); +} + + +/* =================== tabread4 ====================== */ + +static t_class *tabread4_class; + +typedef struct _tabread +{ + t_object x_obj; + t_symbol *x_arrayname; +} t_tabread; + +static void tabread4_float(t_tabread *x, t_float findex) +{ + t_garray *A; + int npoints; + t_float *vec; + + if (!(A = (t_garray *)pd_findbyclass(x->x_arrayname, garray_class))) + error("%s: no such array", x->x_arrayname->s_name); + else if (!garray_getfloatarray(A, &npoints, &vec)) + + error("%s: bad template for tabread", x->x_arrayname->s_name); + else + { + float a, b, c, d, cminusb, frac, out; + int index = (int)findex, max_index = npoints - 1; + + if (index < 0) index = 0, frac = 0.; + else if (index > max_index) index = max_index, frac = 0.; + else frac = findex - index; + + a = vec[index-1]; + b = vec[index]; + c = vec[index+1]; + d = vec[index+2]; + cminusb = c - b; + + out = (t_float)(b + frac * (cminusb - 0.5 * (frac-1.) * ( + (a - d + 3.0 * cminusb) * frac + + (b - a - cminusb) + ) + )); + + outlet_float(x->x_obj.ob_outlet, (npoints ? out : 0)); + } +} + + +static void tabread4_set(t_tabread *x, t_symbol *s) +{ + x->x_arrayname = s; +} + +static void *tabread4_new(t_symbol *s) +{ + t_tabread *x = (t_tabread *)pd_new(tabread4_class); + x->x_arrayname = s; + outlet_new(&x->x_obj, &s_float); + + post("zexy/tabread4: this is obsolete, since tabread4 is now included into pd"); + post("maybe you should go for an upgrade..."); + return (x); +} + +static void tabread4_helper(void) +{ + post("\n%c tabread4 - object : reads out a table (4point-interpolation-support)", HEARTSYMBOL); + post("'set <table>': read out another table\n" + "<position> : read from table at specified position\n" + "outlet\t: table-data at specified position (evt. interpolated)"); + post("creation: \"tabread4 <table>\""); + +} + +static void tabread4_setup(void) +{ + tabread4_class = class_new(gensym("tabread4"), (t_newmethod)tabread4_new, + 0, sizeof(t_tabread), 0, A_DEFSYM, 0); + class_addfloat(tabread4_class, (t_method)tabread4_float); + class_addmethod(tabread4_class, (t_method)tabread4_set, gensym("set"), + A_SYMBOL, 0); + + class_addmethod(tabread4_class, (t_method)tabread4_helper, gensym("help"), 0); + class_sethelpsymbol(tabread4_class, gensym("zexy/tabread4")); +} + +void z_tabread4_setup(void) +{ + tabread4_setup(); + tabdump_setup(); + tabset_setup(); +} |