From a7af081228de119a07bc18bcb35f0bbf567f9dd8 Mon Sep 17 00:00:00 2001
From: Hans-Christoph Steiner <eighthave@users.sourceforge.net>
Date: Mon, 13 Dec 2010 01:08:45 +0000
Subject: refactored x_time.c into delay.c pipe.c metro.c delay.c timer.c
 line.c and an alias, del.c

svn path=/trunk/; revision=14599
---
 externals/vanilla/metro.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 externals/vanilla/metro.c

(limited to 'externals/vanilla/metro.c')

diff --git a/externals/vanilla/metro.c b/externals/vanilla/metro.c
new file mode 100644
index 00000000..d33e72a6
--- /dev/null
+++ b/externals/vanilla/metro.c
@@ -0,0 +1,75 @@
+/* Copyright (c) 1997-1999 Miller Puckette.
+* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.  */
+
+/* clock objects */
+
+#include "m_pd.h"
+#include <stdio.h>
+
+static t_class *metro_class;
+
+typedef struct _metro
+{
+    t_object x_obj;
+    t_clock *x_clock;
+    double x_deltime;
+    int x_hit;
+} t_metro;
+
+static void metro_tick(t_metro *x)
+{
+    x->x_hit = 0;
+    outlet_bang(x->x_obj.ob_outlet);
+    if (!x->x_hit) clock_delay(x->x_clock, x->x_deltime);
+}
+
+static void metro_float(t_metro *x, t_float f)
+{
+    if (f != 0) metro_tick(x);
+    else clock_unset(x->x_clock);
+    x->x_hit = 1;
+}
+
+static void metro_bang(t_metro *x)
+{
+    metro_float(x, 1);
+}
+
+static void metro_stop(t_metro *x)
+{
+    metro_float(x, 0);
+}
+
+static void metro_ft1(t_metro *x, t_floatarg g)
+{
+    if (g < 1) g = 1;
+    x->x_deltime = g;
+}
+
+static void metro_free(t_metro *x)
+{
+    clock_free(x->x_clock);
+}
+
+static void *metro_new(t_floatarg f)
+{
+    t_metro *x = (t_metro *)pd_new(metro_class);
+    metro_ft1(x, f);
+    x->x_hit = 0;
+    x->x_clock = clock_new(x, (t_method)metro_tick);
+    outlet_new(&x->x_obj, gensym("bang"));
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("ft1"));
+    return (x);
+}
+
+static void metro_setup(void)
+{
+    metro_class = class_new(gensym("metro"), (t_newmethod)metro_new,
+        (t_method)metro_free, sizeof(t_metro), 0, A_DEFFLOAT, 0);
+    class_addbang(metro_class, metro_bang);
+    class_addmethod(metro_class, (t_method)metro_stop, gensym("stop"), 0);
+    class_addmethod(metro_class, (t_method)metro_ft1, gensym("ft1"),
+        A_FLOAT, 0);
+    class_addfloat(metro_class, (t_method)metro_float);
+}
-- 
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