ios – AudioKit: Programmatically choose waveform for oscillator

I created an oscillator with AudioKit resp. SoundpipeAudioKit and I might wish to let the consumer change the waveform at runtime. I am simply exhibiting the related elements:

let osc = DynamicOscillator(amplitude: 0) 
[...]
osc.setWaveform(Desk(.sine))

The chosen waveform comes from a GroupBox that comprises a number of waveforms in an HStack. I guess this isn’t related, I am simply studying the chosen waveform right into a string, like this:

.onTapGesture {
    waveForm = waveForms[index]
}

Someway AudioKit is utilizing an enum for the waveforms. Learn how to take the string worth to assign as an enum?

This doesn’t work:

osc.setWaveform(Desk(waveForm))

It returns

No precise matches in name to initator

That is the definition of “Desk”:

public class Desk: MutableCollection {
    [...]
}

And this are the Enums:

/// Supported default desk sorts
public enum TableType {
    /// Commonplace sine waveform
    case sine
    [....]
}