puredata/6.externs/obj3.c

   1 /* code for the "obj3" pd class.  This adds an outlet and a state variable.  */
   2
   3 #include "m_pd.h"
   4
   5 typedef struct obj3
   6 {
   7   t_object x_ob;
   8   t_outlet *x_outlet;
   9   float x_value;
  10 } t_obj3;
  11
  12 void obj3_float(t_obj3 *x, t_floatarg f)
  13 {
  14     outlet_float(x->x_outlet, f + x->x_value);
  15 }
  16
  17 void obj3_ft1(t_obj3 *x, t_floatarg g)
  18 {
  19     x->x_value = g;
  20 }
  21
  22 t_class *obj3_class;
  23
  24 void *obj3_new(void)
  25 {
  26     t_obj3 *x = (t_obj3 *)pd_new(obj3_class);
  27     inlet_new(&x->x_ob, &x->x_ob.ob_pd, gensym("float"), gensym("ft1"));
  28     x->x_outlet = outlet_new(&x->x_ob, gensym("float"));
  29     return (void *)x;
  30 }
  31
  32 void obj3_setup(void)
  33 {
  34     obj3_class = class_new(gensym("obj3"), (t_newmethod)obj3_new,
  35         0, sizeof(t_obj3), 0, 0);
  36     class_addmethod(obj3_class, (t_method)obj3_ft1, gensym("ft1"), A_FLOAT, 0);
  37     class_addfloat(obj3_class, obj3_float);
  38 }
  39