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Added sliders and made the ADSR controllabe with them

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This commit is contained in:
Sasha Koshka
2023-02-10 21:55:59 -05:00
parent c33faa402b
commit 5e448edb21
3 changed files with 277 additions and 11 deletions
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47
examples/piano/main.go
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@@ -17,6 +17,12 @@ const bufferSize = 256
var tuning = music.EqualTemparment { A4: 440 }
var waveform = 0
var playing = map[music.Note] *toneStreamer { }
var adsr = ADSR {
Attack: 5 * time.Millisecond,
Decay: 400 * time.Millisecond,
Sustain: 0.7,
Release: 500 * time.Millisecond,
}
func main () {
speaker.Init(sampleRate, bufferSize)
@@ -27,11 +33,9 @@ func run () {
window, _ := tomo.NewWindow(2, 2)
window.SetTitle("Piano")
container := basicElements.NewContainer(basicLayouts.Vertical { true, true })
window.Adopt(container)
controlBar := basicElements.NewContainer(basicLayouts.Horizontal { true, false })
label := basicElements.NewLabel("Play a song!", false)
controlBar.Adopt(label, true)
waveformButton := basicElements.NewButton("Sine")
waveformButton.OnClick (func () {
waveform = (waveform + 1) % 5
@@ -43,15 +47,41 @@ func run () {
case 4: waveformButton.SetText("Supersaw")
}
})
controlBar.Adopt(waveformButton, false)
container.Adopt(controlBar, false)
attackSlider := basicElements.NewLerpSlider(0, 3 * time.Second, adsr.Attack, true)
decaySlider := basicElements.NewLerpSlider(0, 3 * time.Second, adsr.Decay, true)
sustainSlider := basicElements.NewSlider(adsr.Sustain, true)
releaseSlider := basicElements.NewLerpSlider(0, 3 * time.Second, adsr.Release, true)
attackSlider.OnRelease (func () {
adsr.Attack = attackSlider.Value()
})
decaySlider.OnRelease (func () {
adsr.Decay = decaySlider.Value()
})
sustainSlider.OnRelease (func () {
adsr.Sustain = sustainSlider.Value()
})
releaseSlider.OnRelease (func () {
adsr.Release = releaseSlider.Value()
})
piano := fun.NewPiano(2, 5)
container.Adopt(piano, true)
piano.OnPress(playNote)
piano.OnRelease(stopNote)
piano.Focus()
window.Adopt(container)
controlBar.Adopt(label, true)
controlBar.Adopt(waveformButton, false)
controlBar.Adopt(basicElements.NewSpacer(true), false)
controlBar.Adopt(attackSlider, false)
controlBar.Adopt(decaySlider, false)
controlBar.Adopt(sustainSlider, false)
controlBar.Adopt(releaseSlider, false)
container.Adopt(controlBar, true)
container.Adopt(piano, false)
window.OnClose(tomo.Stop)
window.Show()
}
@@ -71,12 +101,7 @@ func playNote (note music.Note) {
int(tuning.Tune(note)),
waveform,
0.3,
ADSR {
Attack: 100 * time.Millisecond,
Decay: 400 * time.Millisecond,
Sustain: 0.7,
Release: 500 * time.Millisecond,
})
adsr)
stopNote(note)
speaker.Lock()