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/*
* niagara: split a list into 2 (use [list split] instead)
*
* (c) 1999-2011 IOhannes m zmölnig, forum::für::umläute, institute of electronic music and acoustics (iem)
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "zexy.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
nowadays you can do this with [list split] (though this cannot handle negative indices)
*/
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, gensym("list"));
x->right = outlet_new(&x->x_obj, gensym("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);
zexy_register("niagara");
}
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