From cdf8ded57019d5c905f16422d40be7b1a18ab3bc Mon Sep 17 00:00:00 2001
From: Tom Schouten <doelie@users.sourceforge.net>
Date: Tue, 21 Jan 2003 10:18:19 +0000
Subject: This commit was generated by cvs2svn to compensate for changes in
 r350, which included commits to RCS files with non-trunk default branches.

svn path=/trunk/externals/creb/; revision=351
---
 modules/ramp.c | 118 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 modules/ramp.c

(limited to 'modules/ramp.c')

diff --git a/modules/ramp.c b/modules/ramp.c
new file mode 100644
index 0000000..ad13582
--- /dev/null
+++ b/modules/ramp.c
@@ -0,0 +1,118 @@
+/*
+ *   ramp.c  - retriggerable counter for dsp signals 
+ *   Copyright (c) 2000-2003 by Tom Schouten
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+#include "m_pd.h"
+#include <math.h>
+
+
+typedef struct rampctl
+{
+  t_float c_offset;
+  t_float c_looppoint;
+} t_rampctl;
+
+typedef struct ramp
+{
+  t_object x_obj;
+  t_float x_f;
+  t_rampctl x_ctl;
+} t_ramp;
+
+
+void ramp_offset(t_ramp *x,  t_floatarg f)
+{
+
+  x->x_ctl.c_offset = f;
+
+}
+
+void ramp_looppoint(t_ramp *x,  t_floatarg f)
+{
+
+  x->x_ctl.c_looppoint = f;
+
+}
+
+
+void ramp_bang(t_ramp *x)
+{
+  ramp_offset(x, 0);
+
+}
+
+
+
+static t_int *ramp_perform(t_int *w)
+{
+
+
+  t_float *out    = (float *)(w[3]);
+  t_rampctl *ctl  = (t_rampctl *)(w[1]);
+  t_int i;
+  t_int n = (t_int)(w[2]);
+  t_float x;
+
+
+
+  x = ctl->c_offset;
+
+  for (i = 0; i < n; i++)
+    {
+      *out++ = (float)x++;
+    }
+
+  ctl->c_offset = x; /* save state */
+
+    
+  return (w+4);
+}
+
+static void ramp_dsp(t_ramp *x, t_signal **sp)
+{
+    dsp_add(ramp_perform, 3, &x->x_ctl, sp[0]->s_n, sp[0]->s_vec);
+
+}                                  
+void ramp_free(void)
+{
+
+}
+
+t_class *ramp_class;
+
+void *ramp_new(void)
+{
+    t_ramp *x = (t_ramp *)pd_new(ramp_class);
+    /*  inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("looppoint"));*/
+    outlet_new(&x->x_obj, gensym("signal")); 
+
+    ramp_bang(x);
+    return (void *)x;
+}
+
+void ramp_tilde_setup(void)
+{
+  //post("ramp~ v0.1");
+    ramp_class = class_new(gensym("ramp~"), (t_newmethod)ramp_new,
+    	(t_method)ramp_free, sizeof(t_ramp), 0, 0);
+    class_addmethod(ramp_class, (t_method)ramp_bang, gensym("bang"), 0);
+    class_addmethod(ramp_class, (t_method)ramp_dsp, gensym("dsp"), 0); 
+    class_addfloat(ramp_class, (t_method)ramp_offset); 
+}
+
-- 
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