56 lines
1.2 KiB
Text
56 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{InRect}
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Test if a point is within a given rectangle.@section{related}
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Classes/InRange, Classes/Schmidt
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@section{categories}
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UGens>Maths
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@section{description}
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A pair of signals x and y are treated as a point (x,y) in 2-D; if they fall within the bounds of the rectangle, then this UGen outputs a one; else it outputs zero.
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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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x
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X component signal
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@section{argument}
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y
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Y component signal
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@section{argument}
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rect
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A link::Classes/Rect:: which defines the rectangular region to monitor; note that Rects are in screen co-ordinates, so the top is smaller than the bottom. The Rect is created once and cannot be modulated.
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@section{examples}
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@racketblock[
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//we'll hear the sawtooth wave when the two sine oscillators are both in the region x = 0.0 to 0.5, y = 0.5 to 1.0
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{InRect.ar(SinOsc.ar(1),SinOsc.ar(1.3),Rect(0,0.5,0.5,0.5))*LFSaw.ar(44,0,0.1) }.play
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//stereo effect
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{(InRect.ar(LFNoise0.ar([140,141]),LFNoise0.ar(143),Rect(0,0,0.5,1)).lag(0.1))*LFSaw.ar(SinOsc.ar(10,0,5,400),0,0.1) }.play
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//for the Rect, create as left, 'top', width, height;
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r= Rect(0,0,1,1)
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r.left
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r.right
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r.top
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r.bottom
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::
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]
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