/usr/share/SuperCollider/HelpSource/Classes/Index.schelp is in supercollider-common 1:3.8.0~repack-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | class:: Index
summary:: Index into a table with a signal
related:: Classes/WrapIndex, Classes/Shaper
categories:: UGens>Buffer
Description::
Index into a table with a signal.
The input signal value is truncated to an integer value and used as an
index into the table. Out-of-range index values are clipped to the valid
range.
classmethods::
method::ar, kr
argument::bufnum
Index of the buffer.
argument::in
The input signal.
argument::mul
Output will be multiplied by this value.
argument::add
This value will be added to the output.
Examples::
code::
// indexing into a fixed table
(
{
SinOsc.ar(
Index.kr(
LocalBuf.newFrom([ 200, 300, 400, 500, 600, 800 ]),
LFSaw.kr(2.0).range(0, 7)
),
0,
0.5
)
}.play;
)
// with mouse control
(
{
SinOsc.ar(
Index.kr(
LocalBuf.newFrom([ 200, 300, 400, 500, 600, 800 ]),
MouseX.kr(0, 7)
),
0,
0.5
)
}.play;
)
(
// indexing into a changeable table
s = Server.local;
t = [ 200, 300, 400, 500, 600, 800 ];
b = Buffer(s, t.size, 1);
// alloc and set the values
s.listSendMsg( b.allocMsg( b.setnMsg(0, t) ).postln );
SynthDef(\help_Index, { arg out = 0, i_bufnum = 0;
Out.ar(0,
SinOsc.ar(
Index.kr(
i_bufnum,
LFSaw.kr(2).range(0, 7)
),
0,
0.5
)
)
}).play(s, [\i_bufnum, b]);
)
b.setn(*[ 200, 300, 400, 500, 600, 800 ].scramble.postln - 30);
(
SynthDef(\help_Index, { arg out=0,i_bufnum=0;
Out.ar(0,
SinOsc.ar(
Index.kr(
i_bufnum,
MouseX.kr(0, BufFrames.ir(i_bufnum))
),
0,
0.5
)
)
}).play(s, [\i_bufnum, b]);
)
b.free;
::
|