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-rw-r--r--zeroxpos~/help-zeroxpos~.pd119
-rw-r--r--zeroxpos~/zeroxpos~.c138
2 files changed, 212 insertions, 45 deletions
diff --git a/zeroxpos~/help-zeroxpos~.pd b/zeroxpos~/help-zeroxpos~.pd
index 6f4cddd..7bb2f23 100644
--- a/zeroxpos~/help-zeroxpos~.pd
+++ b/zeroxpos~/help-zeroxpos~.pd
@@ -1,25 +1,96 @@
-#N canvas 0 0 450 300 10;
-#X obj 149 197 print direction;
-#X obj 77 219 print offset;
-#X floatatom 149 126 5 0 0 0 - - -;
-#X obj 76 96 osc~ 320;
-#X obj 77 151 zeroxpos~ 3;
-#X text 161 152 ...is also creation arg;
-#X text 189 125 nth zero-crossing in frame...;
-#X text 56 13 zeroxpos~: find n-th zero crossing in frame;
-#X obj 144 89 bng 15 250 50 0 empty empty get-it 0 -6 0 8 -262144 -1
+#N canvas 0 0 603 357 10;
+#X obj 251 132 block~ 256;
+#X obj 144 150 zeroxpos~ 3;
+#X obj 40 150 zeroxpos~ -3;
+#X text 30 30 Zeroxpos~ finds a zero-crossing point within a dsp-block
+;
+#X obj 31 96 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
-1;
-#X floatatom 77 180 5 0 0 0 - - -;
-#X floatatom 149 175 5 0 0 0 - - -;
-#X text 77 235 time since start of frame in samples;
-#X text 170 215 direction (1=up \, -1=down);
-#X obj 354 179 block~ 1024;
-#X text 69 30 by Edward Kelly;
-#X msg 245 45 \; pd dsp 1;
-#X connect 2 0 4 1;
-#X connect 3 0 4 0;
-#X connect 4 0 9 0;
-#X connect 4 1 10 0;
-#X connect 8 0 4 0;
-#X connect 9 0 1 0;
-#X connect 10 0 0 0;
+#X floatatom 40 167 5 0 0 0 - - -;
+#X floatatom 144 167 5 0 0 0 - - -;
+#X text 228 156 <-- creation argument sets the;
+#X text 252 167 zero-crossing point to find;
+#X text 251 178 1st \, 2nd \, 3rd etc.;
+#X text 249 220 a positive argument finds;
+#X text 247 233 the n-th zero crossing from;
+#X text 247 245 the start of the block.;
+#X text 35 222 a negative argument finds;
+#X text 33 233 the n-th zero crossing from;
+#X text 33 244 the end of the block.;
+#X floatatom 177 107 5 0 0 0 - - -;
+#N canvas 0 0 450 300 (subpatch) 0;
+#X array block 256 float 3;
+#A 0 0.253416 0.130458 0.00545404 -0.119636 -0.242851 -0.362248 -0.475957
+-0.582198 -0.679303 -0.765742 -0.840147 -0.901368 -0.948445 -0.980638
+-0.997421 -0.998542 -0.983994 -0.954005 -0.909041 -0.849786 -0.777197
+-0.692413 -0.596762 -0.491735 -0.378986 -0.26029 -0.137509 -0.012569
+0.112569 0.235939 0.355605 0.469692 0.576406 0.67406 0.761136 0.836267
+0.898277 0.946171 0.979207 0.996877 0.998904 0.985256 0.956116 0.911974
+0.853521 0.781673 0.697548 0.602464 0.497928 0.385577 0.267174 0.144571
+0.0197003 -0.105479 -0.229003 -0.348935 -0.463381 -0.570554 -0.668774
+-0.7565 -0.832341 -0.895109 -0.94383 -0.977741 -0.996308 -0.99921 -0.986431
+-0.958173 -0.914879 -0.857217 -0.786086 -0.70262 -0.608129 -0.504093
+-0.392134 -0.27402 -0.151607 -0.0268136 0.0984023 0.222071 0.342253
+0.457064 0.564703 0.663473 0.75182 0.828368 0.891918 0.941472 0.976224
+0.995654 0.999461 0.987585 0.960201 0.917728 0.860855 0.790474 0.707687
+0.613778 0.510233 0.398682 0.280874 0.158655 0.0339427 -0.0913004 -0.21511
+-0.335546 -0.450712 -0.558797 -0.658112 -0.7471 -0.824365 -0.888672
+-0.939028 -0.974648 -0.994974 -0.999679 -0.988672 -0.962151 -0.920532
+-0.864466 -0.794818 -0.712687 -0.619375 -0.516342 -0.405204 -0.287695
+-0.165673 -0.0410526 0.0842137 0.208159 0.328832 0.444344 0.552884
+0.652749 0.742354 0.820304 0.885381 0.936565 0.973047 0.994233 0.999818
+0.989715 0.964081 0.923301 0.868019 0.799117 0.717675 0.624969 0.522437
+0.411707 0.294517 0.172705 0.0481785 -0.0771039 -0.201175 -0.322089
+-0.43795 -0.546929 -0.647319 -0.737551 -0.816209 -0.882057 -0.934039
+-0.971362 -0.993442 -0.999933 -0.990717 -0.965937 -0.926001 -0.871533
+-0.803388 -0.722613 -0.630497 -0.528488 -0.418184 -0.301313 -0.179707
+-0.0552834 0.0700081 0.194203 0.315346 0.431537 0.540954 0.641883 0.732741
+0.812077 0.878668 0.931471 0.969657 0.992614 0.999977 0.991649 0.967759
+0.928683 0.87501 0.807601 0.72752 0.636021 0.534537 0.42465 0.308102
+0.186719 0.0624042 -0.0628919 -0.187199 -0.308567 -0.425094 -0.534951
+-0.636398 -0.727855 -0.807891 -0.875249 -0.928863 -0.967882 -0.991712
+-0.99998 -0.992555 -0.969531 -0.931286 -0.878427 -0.811782 -0.732395
+-0.641494 -0.540528 -0.43108 -0.314867 -0.193706 -0.0695031 0.0557888
+0.180206 0.301797 0.418643 0.528917 0.63089 0.722964 0.803687 0.87178
+0.926192 0.966069 0.990788 0.999936 0.993385 0.971245 0.933864 0.881826
+0.815924 0.73722 0.646947 0.546521 0.437509 0.321625 0.200696 0.0766166
+-0.0486669 -0.173186 -0.294984;
+#X coords 0 1 255 -1 100 50 1;
+#X restore 207 268 graph;
+#X obj 220 87 tabwrite~ block;
+#X obj 107 75 osc~ 880;
+#X obj 79 284 tabread block;
+#X floatatom 79 270 5 0 0 0 - - -;
+#X floatatom 79 301 5 0 0 0 - - -;
+#X floatatom 119 167 2 0 0 0 - - -;
+#X floatatom 216 167 2 0 0 0 - - -;
+#X text 36 193 output is in samples \, right output is direction (polarity)
+of zero crossing.;
+#X msg 320 94 mode \$1;
+#X obj 320 79 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
+1;
+#X text 349 77 <--- if the mode is zero \,;
+#X text 389 89 zeroxpos will not look;
+#X text 395 102 for zero-crossing points;
+#X text 404 114 until after it receives a;
+#X text 412 126 bang. But if it is set to 1 \,;
+#X text 418 138 zeroxpos will continuously;
+#X text 424 150 look for zero-crossings \,;
+#X text 431 163 and output those stored;
+#X text 437 175 in memory when banged.;
+#X connect 1 0 6 0;
+#X connect 1 1 24 0;
+#X connect 2 0 5 0;
+#X connect 2 1 23 0;
+#X connect 4 0 2 0;
+#X connect 4 0 1 0;
+#X connect 4 0 18 0;
+#X connect 16 0 2 1;
+#X connect 19 0 2 0;
+#X connect 19 0 1 0;
+#X connect 19 0 18 0;
+#X connect 20 0 22 0;
+#X connect 21 0 20 0;
+#X connect 26 0 1 0;
+#X connect 26 0 2 0;
+#X connect 27 0 26 0;
diff --git a/zeroxpos~/zeroxpos~.c b/zeroxpos~/zeroxpos~.c
index d6c15c5..54373f0 100644
--- a/zeroxpos~/zeroxpos~.c
+++ b/zeroxpos~/zeroxpos~.c
@@ -1,4 +1,5 @@
#include "m_pd.h"
+#include <math.h>
static t_class *zeroxpos_tilde_class;
@@ -12,8 +13,8 @@ typedef struct _zeroxpos_tilde
{
t_object x_obj;
t_zeroxpos_control x_ctl;
- t_float f_num, f_dummy;
- t_int i_bang, i_pol, i_count, i_ndx;
+ t_float f_num, f_dummy, f_dir;
+ t_int i_bang, i_pol, i_count, i_ndx, i_mode;
t_outlet *f_pos, *f_pol;
} t_zeroxpos_tilde;
@@ -23,7 +24,8 @@ t_int *zeroxpos_tilde_perform(t_int *w)
t_zeroxpos_control *ctl = (t_zeroxpos_control *)(w[2]);
int n = (int)(w[3]);
t_float *in = ctl->c_input;
- int number = (int)x->f_num;
+ x->f_dir = x->f_num >= 0 ? 1 : -1;
+ int number = x->f_num >= 1 || x->f_num <= -1 ? (int)fabs(x->f_num) : 1;
int count = x->i_count;
int polarity = 1;
int i = 0;
@@ -31,33 +33,125 @@ t_int *zeroxpos_tilde_perform(t_int *w)
x->i_ndx = -1;
int prev = ctl->final_pol == 0 ? in[0] : ctl->final_pol;
- for(i=0;i<n;i++)
+ if(x->i_mode == 0)
{
- polarity = in[i] >= 0 ? 1 : -1;
- if((polarity < prev || polarity > prev) && count == number && x->i_bang == 1)
+ if(x->f_dir > 0)
{
- x->i_ndx = i;
- x->i_pol = polarity;
- count += 1e+06;
- x->i_bang = 0;
- outlet_float(x->f_pol, (float)x->i_pol);
- outlet_float(x->f_pos, (float)x->i_ndx);
+ for(i=0;i<n;i++)
+ {
+ polarity = in[i] >= 0 ? 1 : -1;
+ if((polarity < prev || polarity > prev) && count == number && x->i_bang == 1)
+ {
+ x->i_ndx = i;
+ x->i_pol = polarity;
+ count += 1e+06;
+ x->i_bang = 0;
+ outlet_float(x->f_pol, (float)x->i_pol);
+ outlet_float(x->f_pos, (float)x->i_ndx);
+ }
+ if((polarity < prev || polarity > prev) && count < number) count++;
+ if(i==n-1&&count<number)
+ {
+ ctl->final_pol = polarity;
+ x->i_count = count;
+ }
+ prev = polarity;
+ }
}
- if((polarity < prev || polarity > prev) && count < number) count++;
- if(i==n-1)
+ else if(x->f_dir < 0)
{
- ctl->final_pol = polarity;
- x->i_count = count;
+ for(i=n-1;i>=0;i--)
+ {
+ polarity = in[i] >= 0 ? 1 : -1;
+ if((polarity < prev || polarity > prev) && count == number && x->i_bang == 1)
+ {
+ x->i_ndx = i;
+ x->i_pol = polarity;
+ count += 1e+06;
+ x->i_bang = 0;
+ outlet_float(x->f_pol, (float)(x->i_pol*-1));
+ outlet_float(x->f_pos, (float)x->i_ndx+1);
+ }
+ if((polarity < prev || polarity > prev) && count < number) count++;
+ if(i==0&&count<number)
+ {
+ ctl->final_pol = polarity;
+ x->i_count = count;
+ }
+ prev = polarity;
+ }
+ }
+ }
+ else if(x->i_mode != 0)
+ {
+ if(x->f_dir > 0)
+ {
+ for(i=0;i<n;i++)
+ {
+ polarity = in[i] >= 0 ? 1 : -1;
+ if((polarity < prev || polarity > prev) && count == number)
+ {
+ x->i_ndx = i;
+ x->i_pol = polarity;
+ count += 1e+06;
+ x->i_bang = 0;
+ }
+ if((polarity < prev || polarity > prev) && count < number) count++;
+ if(i==n-1&&count<number)
+ {
+ ctl->final_pol = polarity;
+ x->i_count = count;
+ }
+ prev = polarity;
+ }
+ }
+ else if(x->f_dir < 0)
+ {
+ for(i=n-1;i>=0;i--)
+ {
+ polarity = in[i] >= 0 ? 1 : -1;
+ if((polarity < prev || polarity > prev) && count == number)
+ {
+ x->i_ndx = i;
+ x->i_pol = polarity;
+ count += 1e+06;
+ x->i_bang = 0;
+ }
+ if((polarity < prev || polarity > prev) && count < number) count++;
+ if(i==0&&count<number)
+ {
+ ctl->final_pol = polarity;
+ x->i_count = count;
+ }
+ prev = polarity;
+ }
}
- prev = polarity;
}
return(w+4);
}
void zeroxpos_tilde_bang(t_zeroxpos_tilde *x)
{
- x->i_bang = 1;
- x->i_count = 0;
+ if(x->i_mode == 0)
+ {
+ x->i_bang = 1;
+ x->i_count = 0;
+ }
+ else if(x->i_mode != 0 && x->f_dir > 0)
+ {
+ outlet_float(x->f_pol, (float)x->i_pol);
+ outlet_float(x->f_pos, (float)x->i_ndx);
+ }
+ else if(x->i_mode != 0 && x->f_dir < 0)
+ {
+ outlet_float(x->f_pol, (float)(x->i_pol*-1));
+ outlet_float(x->f_pos, (float)x->i_ndx+1);
+ }
+}
+
+void zeroxpos_tilde_mode(t_zeroxpos_tilde *x, t_floatarg fmode)
+{
+ x->i_mode = (int)fmode;
}
void *zeroxpos_tilde_dsp(t_zeroxpos_tilde *x, t_signal **sp)
@@ -70,8 +164,9 @@ void *zeroxpos_tilde_dsp(t_zeroxpos_tilde *x, t_signal **sp)
void *zeroxpos_tilde_new(t_floatarg f)
{
t_zeroxpos_tilde *x = (t_zeroxpos_tilde *)pd_new(zeroxpos_tilde_class);
- x->f_num = f > 0 ? f : 1;
- x->x_ctl.final_pol = 1;
+ x->f_dir = f >= 0 ? 1 : -1;
+ x->f_num = f >= 1 || f <= -1 ? (int)fabs(f) : 1;
+ x->x_ctl.final_pol = 0;
x->i_count = 0;
floatinlet_new (&x->x_obj, &x->f_num);
x->f_pos = outlet_new(&x->x_obj, gensym("float"));
@@ -93,6 +188,7 @@ void zeroxpos_tilde_setup(void)
class_sethelpsymbol(zeroxpos_tilde_class, gensym("help-zeroxpos~"));
class_addbang(zeroxpos_tilde_class, zeroxpos_tilde_bang);
class_addmethod(zeroxpos_tilde_class, (t_method)zeroxpos_tilde_dsp, gensym("dsp"), 0);
+ class_addmethod(zeroxpos_tilde_class, (t_method)zeroxpos_tilde_mode, gensym("mode"), A_DEFFLOAT, 0);
CLASS_MAINSIGNALIN(zeroxpos_tilde_class, t_zeroxpos_tilde, f_dummy);
}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-02 19:13:45 +0000