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class:: IndexL
summary:: Index into a table with a signal, linear interpolated
categories:: UGens>Buffer
related:: Classes/Index, Classes/IndexInBetween
description::
The input signal value is used as an index into the table, with linear interpolation.
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.
examples::
code::
// indexing into a fixed table
(
{
SinOsc.ar(
IndexL.kr(
LocalBuf.newFrom([200, 300, 400, 500, 600, 800].scramble),
LFSaw.kr(2.0).range(0, 7)
),
0,
0.5
)
}.play;
)
// with mouse control
(
{
SinOsc.ar(
IndexL.kr(
LocalBuf.newFrom([200, 300, 400, 500, 600, 800].scramble),
MouseX.kr(0, 7)
),
0,
0.5
)
}.play;
)
(
// indexing into a changeable table
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, { |out = 0, bufnum = 0|
Out.ar(out,
SinOsc.ar(
IndexL.kr(
bufnum,
LFSaw.kr(2).range(0, BufFrames.kr(bufnum))
),
0,
0.5
)
)
}).play(s, [\bufnum, b]);
)
b.setn(*[ 200, 300, 400, 500, 600, 800 ].scramble.postln - 30);
(
SynthDef(\help_index, { |out = 0, bufnum = 0|
Out.ar(out,
SinOsc.ar(
IndexL.kr(
bufnum,
MouseX.kr(0, BufFrames.ir(bufnum))
),
0,
0.5
)
)
}).play(s, [\bufnum, b]);
)
b.free;
::
|
