74 lines
958 B
Text
74 lines
958 B
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{LastValue}
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Output the last value before the input changed@section{related}
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Classes/LeastChange, Classes/MostChange
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@section{categories}
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UGens>Triggers
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@section{description}
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Output the last value before the input changed more than a threshold.
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@section{classmethods}
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@section{method}
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ar, kr
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@section{argument}
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in
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The input signal.
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@section{argument}
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diff
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Difference threshold.
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@section{Examples}
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@racketblock[
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d = { arg freq=440; SinOsc.ar(LastValue.ar(freq, 20), 0, 0.2) }.play;
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d.set(\freq, 400);
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d.set(\freq, 200);
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d.set(\freq, 670);
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d.set(\freq, 680);
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d.set(\freq, 695);
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d.free;
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::
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Return the difference between current and the last changed:
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]
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@racketblock[
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(
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d = { arg out=0, val=1;
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SinOsc.ar(
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abs(val - LastValue.kr(val)) * 400 + 200,
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0, 0.2
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)
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}.play;
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)
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d.set(\val, 3);
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d.set(\val, 2);
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d.set(\val, 0.2);
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d.set(\val, 1);
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d.set(\val, 2);
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d.free;
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::
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]
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