object KeyState extends ProductReader[KeyState] with Serializable
A UGen that detects a specific keyboard stroke. When the given key is not
pressed, the lo value is output, while the key is pressed the hi value is
output. If lag is greater than zero, a Lag -type operation is applied for a
smoother transition between lo and hi .
Examples
// determine codes play { val code = Phasor.kr(lo = 0, hi = 127) val k = KeyState.kr(code, lag = 0) val x = Gate.kr(code, k) val ch = x sig_!= Delay1.kr(x) // when a code change is detected, print it x.poll(ch, "code") () }
// gate sound using the 'A' key play { // on Linux, key-code 38 denotes the 'A' key SinOsc.ar(800) * KeyState.kr(38, 0, 0.1) }
- See also
Linear Supertypes
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- def kr(keyCode: GE, lo: GE = 0.0f, hi: GE = 1.0f, lag: GE = 0.2f): KeyState
- keyCode
hardware code for the key to monitor. This is likely platform dependent. For example, on Linux, key-codes 24 to 29 correspond to 'Q', 'W', 'E', 'R', 'T', 'Y'.
- lo
value output when the currently pressed does not match the code
- hi
value output when the currently pressed does match the code
- lag
60 dB lag time in seconds.
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