/usr/share/puredata/doc/6.externs/obj1.c is in puredata-doc 0.47.1-3.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | /* code for "obj1" pd class. This takes two messages: floating-point
numbers, and "rats", and just prints something out for each message. */
#include "m_pd.h"
/* the data structure for each copy of "obj1". In this case we
on;y need pd's obligatory header (of type t_object). */
typedef struct obj1
{
t_object x_ob;
} t_obj1;
/* this is called back when obj1 gets a "float" message (i.e., a
number.) */
void obj1_float(t_obj1 *x, t_floatarg f)
{
post("obj1: %f", f);
}
/* this is called when obj1 gets the message, "rats". */
void obj1_rats(t_obj1 *x)
{
post("obj1: rats");
}
/* this is a pointer to the class for "obj1", which is created in the
"setup" routine below and used to create new ones in the "new" routine. */
t_class *obj1_class;
/* this is called when a new "obj1" object is created. */
void *obj1_new(void)
{
t_obj1 *x = (t_obj1 *)pd_new(obj1_class);
post("obj1_new");
return (void *)x;
}
/* this is called once at setup time, when this code is loaded into Pd. */
void obj1_setup(void)
{
post("obj1_setup");
obj1_class = class_new(gensym("obj1"), (t_newmethod)obj1_new, 0,
sizeof(t_obj1), 0, 0);
class_addmethod(obj1_class, (t_method)obj1_rats, gensym("rats"), 0);
class_addfloat(obj1_class, obj1_float);
}
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