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
47
|
/* code for the "obj4" pd class. This adds a creation argument, of
type "float". */
#include "m_pd.h"
typedef struct obj4
{
t_object x_ob;
t_outlet *x_outlet;
float x_value;
} t_obj4;
void obj4_float(t_obj4 *x, t_floatarg f)
{
outlet_float(x->x_outlet, x->x_value + f);
}
void obj4_ft1(t_obj4 *x, t_floatarg g)
{
x->x_value = g;
}
t_class *obj4_class;
/* as requested by the new invocation of "class_new" below, the new
routine will be called with a "float" argument. */
void *obj4_new(t_floatarg f)
{
t_obj4 *x = (t_obj4 *)pd_new(obj4_class);
inlet_new(&x->x_ob, &x->x_ob.ob_pd, gensym("float"), gensym("ft1"));
x->x_outlet = outlet_new(&x->x_ob, gensym("float"));
/* just stick the argument in the object structure for later. */
x->x_value = f;
return (void *)x;
}
void obj4_setup(void)
{
/* here we add "A_DEFFLOAT" to the (zero-terminated) list of arg
types we declare for a new object. The value will be filled
in as 0 if not given in the object box. */
obj4_class = class_new(gensym("obj4"), (t_newmethod)obj4_new,
0, sizeof(t_obj4), 0, A_DEFFLOAT, 0);
class_addmethod(obj4_class, (t_method)obj4_ft1, gensym("ft1"), A_FLOAT, 0);
class_addfloat(obj4_class, obj4_float);
}
|
