From 2b60d55c919e7588f5aff15936e83c300b3660bb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?IOhannes=20m=20zm=C3=B6lnig?=
 <zmoelnig@users.sourceforge.net>
Date: Tue, 22 Mar 2005 20:58:25 +0000
Subject: zexy-2.0: - use of abstractions for objects that allow it - some
 objects are build both as externals and abstractions (as slower fallbacks) -
 code-layout is now 1:1 c-file<->object (this should allow for building of
 zexy as  a collection of externals instead as a big library) - matrix-objects
 have moved to iemmatrix !!

svn path=/trunk/externals/zexy/; revision=2641
---
 src/niagara.c | 110 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 src/niagara.c

(limited to 'src/niagara.c')

diff --git a/src/niagara.c b/src/niagara.c
new file mode 100644
index 0000000..5764952
--- /dev/null
+++ b/src/niagara.c
@@ -0,0 +1,110 @@
+/******************************************************
+ *
+ * zexy - implementation file
+ *
+ * copyleft (c) IOhannes m zmölnig
+ *
+ *   1999:forum::für::umläute:2004
+ *
+ *   institute of electronic music and acoustics (iem)
+ *
+ ******************************************************
+ *
+ * license: GNU General Public License v.2
+ *
+ ******************************************************/
+
+/* 3108:forum::für::umläute:2000 */
+
+#include "zexy.h"
+#include <string.h>
+#include <memory.h>
+
+
+/* ------------------------- niagara ------------------------------- */
+
+/*
+divides a package into 2 sub-packages at a specified point
+like the niagara-falls, some water goes down to the left side, the rest to the right side, devided by the rock
+*/
+
+static t_class *niagara_class;
+
+typedef struct _niagara
+{
+  t_object x_obj;
+  t_float rock;
+  t_outlet *left, *right;
+} t_niagara;
+
+static void niagara_list(t_niagara *x, t_symbol *s, int argc, t_atom *argv)
+{
+  int n_l, n_r;
+  t_atom *ap_l, *ap_r;
+  int dumrock = x->rock;
+  int rock = ((dumrock < 0.f)?(argc+dumrock):dumrock);
+
+  n_l  = (rock < argc)?rock:argc;
+  ap_l = argv;
+
+  n_r  = argc - n_l;
+  ap_r = &argv[n_l];
+
+  if (n_r) outlet_list(x->right, s, n_r, ap_r);
+  if (n_l) outlet_list(x->left, s, n_l, ap_l);
+}
+
+static void niagara_any(t_niagara *x, t_symbol *s, int argc, t_atom *argv)
+{
+  int n_l, n_r;
+  t_atom *ap_l, *ap_r;
+  t_symbol *s_r, *s_l;
+  int dumrock = x->rock;
+  int rock = ((dumrock < 0.f)?(argc+dumrock):dumrock-1);
+
+  n_l  = (rock < argc)?rock:argc;
+  ap_l = argv;
+  s_l  = s;
+
+  n_r  = argc - n_l;
+  ap_r = &argv[n_l];
+
+  if (n_r) {
+    s_r = 0;
+    if (ap_r->a_type == A_FLOAT) s_r = gensym("list");
+    else {
+      s_r = atom_getsymbol(ap_r);
+      ap_r++;
+      n_r--;
+    }
+    outlet_anything(x->right, s_r, n_r, ap_r);
+  }
+
+  if (n_l+1 ) outlet_anything(x->left, s_l, n_l, ap_l);
+}
+
+static void *niagara_new(t_floatarg f)
+{
+  t_niagara *x = (t_niagara *)pd_new(niagara_class);
+
+  x->rock = f;
+
+  x->left =  outlet_new(&x->x_obj, &s_list);
+  x->right = outlet_new(&x->x_obj, &s_list);
+
+  floatinlet_new(&x->x_obj, &x->rock);
+
+  return (x);
+}
+
+void niagara_setup(void)
+{
+  niagara_class = class_new(gensym("niagara"), (t_newmethod)niagara_new, 
+			    0, sizeof(t_niagara), 0, A_DEFFLOAT,  0);
+  
+  class_addlist    (niagara_class, niagara_list);
+  class_addanything(niagara_class, niagara_any);
+
+  class_sethelpsymbol(niagara_class, gensym("zexy/niagara"));
+  zexy_register("niagara");
+}
-- 
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