final case class ChannelProxy(elem: GE, index: Int) extends GE.Lazy with Product with Serializable
A helper graph element that selects a particular output channel of
another element. The index is an Integer and thus cannot be
determined at graph expansion time. If this is desired, the
Select UGen can be used.
Usually the graph element operator \ (backlash) can be used
instead of explicitly writing ChannelProxy. Thus
elem \ index is equivalent to ChannelProxy(elem, index).
UGens with a fixed number of outputs often have auxiliary methods
to access the channels in meaningful way, e.g. Pitch has
method freq and hasFreq, which are equivalent to
pitch \ 0 and pitch \ 1.
Because ScalaCollider allows late-expanding graph elements, we have no direct way to get some array of a UGen's outputs.
Examples
// frequency of a pitch estimator play { val sin = SinOsc.ar(MouseX.kr(10, 10000, warp = 1)) val pch = Pitch.kr(sin) val freq = pch \ 0 // same as pch.freq freq.poll(label = "freq") () }
- elem
a multi-channel element from which to select a channel.
- index
channel index starting at zero. It automatically wraps around the actual number of channels the input
elemexpands to.
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- def makeUGens: UGenInLike
Abstract method which must be implemented by creating the actual
UGens during expansion.Abstract method which must be implemented by creating the actual
UGens during expansion. This method is at most called once during graph expansion- returns
the expanded object (depending on the type parameter
U)
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- def rate: MaybeRate
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