void Init()
{
var handlerOnMouseDownObservable = new Subject <Vector3>();
handleImage.AddListener(
EventTriggerType.PointerDown,
(e) =>
{
handlerOnMouseDownObservable.OnNext(Vector3.right * ConvertUtils.SamplesToCanvasPositionX(CurrentSamples.Value));
});
var operateHandleObservable = this.UpdateAsObservable()
.SkipUntil(handlerOnMouseDownObservable)
.TakeWhile(_ => !Input.GetMouseButtonUp(0))
.RepeatSafe()
.Select(_ => ConvertUtils.ScreenToCanvasPosition(Input.mousePosition))
.Select(canvasPos => ConvertUtils.CanvasPositionXToSamples(canvasPos.x))
.Select(samples => Mathf.Clamp(samples, 0, Audio.Source.clip.samples))
.DistinctUntilChanged();
operateHandleObservable.Subscribe(samples => CurrentSamples.Value = samples);
operateHandleObservable.Buffer(this.UpdateAsObservable().Where(_ => Input.GetMouseButtonUp(0)))
.Where(b => 2 <= b.Count)
.Select(x => new { current = x.Last(), prev = x.First() })
.Subscribe(x => EditCommandManager.Do(
new Command(
() => CurrentSamples.Value = x.current,
() => CurrentSamples.Value = x.prev)));
Observable.Merge(
CurrentSamples.AsUnitObservable(),
NoteCanvas.OffsetX.AsUnitObservable(),
Audio.SmoothedTimeSamples.AsUnitObservable(),
NoteCanvas.Width.AsUnitObservable(),
EditData.OffsetSamples.AsUnitObservable())
.Select(_ => CurrentSamples.Value)
.Subscribe(x =>
{
var pos = lineRectTransform.localPosition;
pos.x = ConvertUtils.SamplesToCanvasPositionX(x);
lineRectTransform.localPosition = pos;
});
}