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-rwxr-xr-xcontrol/serial_mt.c77
1 files changed, 77 insertions, 0 deletions
diff --git a/control/serial_mt.c b/control/serial_mt.c
new file mode 100755
index 0000000..ed8a0ed
--- /dev/null
+++ b/control/serial_mt.c
@@ -0,0 +1,77 @@
+/* (C) Guenter Geiger <geiger@epy.co.at> */
+
+
+#include <m_pd.h>
+
+
+static t_class *serial_mt_class;
+
+
+typedef struct _serial_mt
+{
+ t_object x_obj;
+ char x_c[4];
+ t_int x_count;
+ t_int x_posx;
+ t_int x_posy;
+ t_outlet *x_out2;
+} t_serial_mt;
+
+
+static void serial_mt_reset( t_serial_mt* x)
+{
+ x->x_posx=0;
+ x->x_posy=0;
+ x->x_count = 0;
+}
+
+static void serial_mt_float( t_serial_mt* x,t_floatarg f)
+{
+ int dx,dy;
+
+ x->x_c[x->x_count] = (char) f;
+
+ x->x_count = (++x->x_count)%3;
+
+ if (x->x_count==2) {
+ dx= (signed char)(((x->x_c[0] & 0x03) << 6) |
+ (x->x_c[1] & 0x3F));
+ dy= (signed char)(((x->x_c[0] & 0x0C) << 4) |
+ (x->x_c[2] & 0x3F));
+ x->x_posx += dx;
+ x->x_posy += dy;
+/* post("posx %d, posy %d",x->x_posx,x->x_posy); */
+ outlet_float(x->x_obj.ob_outlet, x->x_posx);
+ outlet_float(x->x_out2, x->x_posy);
+ }
+
+
+}
+
+
+static void *serial_mt_new(t_symbol *s)
+{
+ t_serial_mt *x = (t_serial_mt *)pd_new(serial_mt_class);
+
+ x->x_count = 0;
+ x->x_posx = 0;
+ x->x_posy = 0;
+
+
+ outlet_new(&x->x_obj, &s_float);
+ x->x_out2 = outlet_new(&x->x_obj, &s_float);
+
+ return x;
+}
+
+
+void serial_mt_setup(void)
+{
+ serial_mt_class = class_new(gensym("serial_mt"), (t_newmethod)serial_mt_new,
+ NULL,
+ sizeof(t_serial_mt), 0,A_DEFSYM,0);
+ class_addfloat(serial_mt_class,serial_mt_float);
+ class_addmethod(serial_mt_class,(t_method) serial_mt_reset,gensym("reset"),0);
+}
+
+