71 lines
1.2 KiB
Text
71 lines
1.2 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{ModDif}
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Minimum difference of two values in modulo arithmetics@section{related}
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Classes/Clip, Classes/Wrap
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@section{categories}
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UGens>Maths
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@section{description}
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Returns the minimum difference of two values in modulo arithmetics. On a circle, there are two distances between two points. This UGen returns the smaller value of the two.
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@racketblock[
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{ var a = Line.ar(0, 4, 0.01), d = ModDif.ar(a); [a, d] }.plot;
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{ var a = Line.ar(0, 4, 0.01); ModDif.ar(a, 0, (1..4)) }.plot;
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{ var a = Line.ar(0, 4, 0.01); ModDif.ar(a, (0, 0.25 .. 1), 1) }.plot;
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::
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]
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@section{classmethods}
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@section{method}
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ar, kr, ir
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@section{argument}
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x
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First input value
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@section{argument}
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y
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Second input value
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@section{argument}
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mod
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Modulo (maximum value, double of the maximal difference).
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@racketblock[
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// different moduli
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(
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{
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var sig = LFSaw.ar(10);
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var dist = ModDif.kr(sig, 0, (0..8) * MouseX.kr(0, 1/5));
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Splay.ar(SinOsc.ar(dist * 4000 + 400)) * 0.1
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}.play;
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)
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// wrapping amplitude crossfade
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(
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{
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var numChan = 12;
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var x = SinOsc.ar({ rrand(300.0, 800.0) } ! numChan);
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var dist = ModDif.kr(MouseX.kr(0, numChan * 2), (0..numChan-1), numChan);
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x = x * max(0, 1 - dist);
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Splay.ar(x) * 0.1
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}.play;
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)
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::
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]
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