1 files changed, 116 insertions, 0 deletions
diff --git a/modules/ramp~.c b/modules/ramp~.c
new file mode 100644
index 0000000..526ec4e
--- /dev/null
+++ b/modules/ramp~.c
@@ -0,0 +1,116 @@
+/*
+ *   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_int c_blockscale;
+} 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_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;
+
+    t_float scale = ctl->c_blockscale ? 1.0f / (float)n : 1.0f;
+
+
+    x = ctl->c_offset;
+    
+    for (i = 0; i < n; i++)
+	{
+	    *out++ = ((float)x++) * scale;
+	}
+
+    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);
+    outlet_new(&x->x_obj, gensym("signal")); 
+    x->x_ctl.c_blockscale = 0;
+    ramp_bang(x);
+    return (void *)x;
+}
+
+void *blockramp_new(void)
+{
+    t_ramp *x = (t_ramp *)ramp_new();
+    x->x_ctl.c_blockscale = 1;
+    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_addcreator((t_newmethod)blockramp_new, gensym("blockramp~"), A_NULL);
+
+    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); 
+}
+