1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
#ifdef NT
#include "stdafx.h"
#include <io.h>
#endif
#include "m_pd.h"
#include <stdlib.h>
#include <time.h>
#include "monorhythm.h"
/**
* The monorhythm object is designed to help build polyrhythms. Given
* a time interval and a pattern it produces the pattern within the time
* interval given. Thus if two where set going with the same time interval
* the two patterns (assuming they where different) would play against
* each other.
*
* this filename is spelt wrong 'cos I can't spell
*/
static t_class *monorhythm_class;
/**
* clock tick - do a bang and wait the next
* time delay in the list
*/
static void monorhythm_tick(t_monorhythm *x)
{
if ( x->t_running )
{
monorhythm_do_beat( x );
clock_delay(x->x_clock, x->x_beattime );
}
}
static void monorhythm_do_beat( t_monorhythm* x )
{
float beat;
if ( x->x_idx == x->x_size )
{
x->x_idx = 0;
}
if ( x->x_idx == 0)
{
outlet_bang( x->x_sync );
}
beat = x->x_pattern[ x->x_idx++ ];
if ( beat > 1 )
{
if ( x->t_exclusive == 0 )
{
outlet_bang( x->x_bang );
}
outlet_bang( x->x_accent );
}
else if ( beat == 1 )
{
outlet_bang( x->x_bang );
}
}
/**
* a bang causes a reset to the start of the bar - used to
* synchronize multiple monorhythm's. If the rhythm is not
* running it is started
*/
static void monorhythm_bang(t_monorhythm *x)
{
if ( x->x_beattime > 0 )
{
monorhythm_restart( x );
}
}
/**
* reset the rhythm to start at the beginning
*/
static void monorhythm_restart(t_monorhythm *x)
{
if ( x->x_beattime > 0 )
{
x->t_running = 1;
x->x_idx = 0;
monorhythm_do_beat( x );
clock_delay(x->x_clock, x->x_beattime );
}
}
/**
* a stop message turns us off
*/
static void monorhythm_stop(t_monorhythm *x)
{
x->t_running = 0;
}
/**
* set exclusive mode
*/
static void monorhythm_set_exclusive(t_monorhythm *x)
{
x->t_exclusive = 1;
}
/**
* set nonexclusive mode
*/
static void monorhythm_set_nonexclusive(t_monorhythm *x)
{
x->t_exclusive = 0;
}
/**
* free our clock and our timer array
*/
static void monorhythm_free(t_monorhythm *x)
{
clock_free(x->x_clock);
free( x->x_pattern );
}
/*
* make a new monorhythm - we can provide a list of times
* so read these in too
*/
static void *monorhythm_new(t_symbol *s, int argc, t_atom *argv)
{
float f;
t_monorhythm *x = (t_monorhythm *)pd_new(monorhythm_class);
x->x_pattern = NULL;
// parse any settings
if ( argc > 0 )
{
f = atom_getfloat( &argv[0] );
monorhythm_set_time( x , f );
monorhythm_pattern_seq( x, s , argc - 1 , argv + 1 );
}
x->t_running=0;
x->t_exclusive = 0;
// make us some ins and outs
x->x_clock = clock_new(x, (t_method)monorhythm_tick);
x->x_bang = outlet_new(&x->x_obj, gensym("bang"));
x->x_accent = outlet_new(&x->x_obj, gensym("accent"));
x->x_sync = outlet_new(&x->x_obj, gensym("sync"));
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("list"), gensym("pattern"));
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("timeinterval"));
return (x);
}
/**
* set a time sequence and free the old array
*/
static void monorhythm_pattern_seq( t_monorhythm *x, t_symbol *s, int ac, t_atom *av )
{
int i;
if ( x->x_pattern != NULL )
{
free( x->x_pattern );
}
if ( ac > 0 )
{
x->x_pattern = (float *) malloc( ac * sizeof( float ));
for( i = 0 ; i < ac ; i++ )
{
float t = atom_getfloat( &av[i] );
x->x_pattern[i] = t;
}
x->x_size=ac;
monorhythm_calculate_beat_interval( x );
}
else
{
// if there is no pattern it doens't do anything
x->x_pattern = NULL;
x->x_size=0;
x->t_running = 0;
}
x->x_idx = 0;
}
/**
* the time interval is divided by the number of beats that are
* going to happen in order to get the beat time. If this would
* be invallid for any reason it is set to 0 and the rhythm is stopped
*/
static void monorhythm_calculate_beat_interval( t_monorhythm *x )
{
if ( ( x->x_size > 0 ) && ( x->x_time > 0 ))
{
x->x_beattime = x->x_time / x->x_size;
}
else
{
x->x_beattime = 0;
x->t_running = 0;
}
}
/**
* set the time - recalculate the beat time
*/
static void monorhythm_set_time( t_monorhythm *x, t_float f )
{
x->x_time = f;
monorhythm_calculate_beat_interval( x );
}
/**
* make a new one and setup all of our messages
*/
void monorhythm_setup(void)
{
monorhythm_class = class_new(gensym("monorhythm"), (t_newmethod)monorhythm_new,
(t_method)monorhythm_free, sizeof(t_monorhythm), 0, A_GIMME, 0);
class_addbang(monorhythm_class, monorhythm_bang);
class_addmethod(monorhythm_class, (t_method)monorhythm_stop, gensym("stop"), 0);
class_addmethod(monorhythm_class, (t_method)monorhythm_bang, gensym("start"), 0);
class_addmethod(monorhythm_class, (t_method)monorhythm_pattern_seq, gensym("pattern" ), A_GIMME, 0);
class_addmethod(monorhythm_class, (t_method)monorhythm_set_time, gensym("timeinterval" ), A_FLOAT, 0);
class_addmethod(monorhythm_class, (t_method)monorhythm_set_exclusive,gensym("exclusive"),0);
class_addmethod(monorhythm_class, (t_method)monorhythm_set_nonexclusive,gensym("nonexclusive"),0);
}
|
