public AnimationController(
float?value = null,
TimeSpan?duration = null,
TimeSpan?reverseDuration = null,
string debugLabel = null,
float lowerBound = 0.0f,
float upperBound = 1.0f,
AnimationBehavior animationBehavior = AnimationBehavior.normal,
TickerProvider vsync = null
)
{
D.assert(upperBound >= lowerBound);
D.assert(vsync != null);
_direction = _AnimationDirection.forward;
this.duration = duration;
this.reverseDuration = reverseDuration;
this.debugLabel = debugLabel;
this.lowerBound = lowerBound;
this.upperBound = upperBound;
this.animationBehavior = animationBehavior;
_ticker = vsync.createTicker(_tick);
_internalSetValue(value ?? lowerBound);
}
public void resync(TickerProvider vsync)
{
Ticker oldTicker = _ticker;
_ticker = vsync.createTicker(_tick);
_ticker.absorbTicker(oldTicker);
}
public static AnimationController unbounded(
float value = 0.0f,
TimeSpan?duration = null,
TimeSpan?reverseDuration = null,
string debugLabel = null,
TickerProvider vsync = null,
AnimationBehavior animationBehavior = AnimationBehavior.preserve
)
{
return(new AnimationController(value, duration, reverseDuration, debugLabel, animationBehavior, vsync));
}
AnimationController(
float value = 0.0f,
TimeSpan?duration = null,
TimeSpan?reverseDuration = null,
string debugLabel = null,
AnimationBehavior?animationBehavior = null,
TickerProvider vsync = null
)
{
D.assert(vsync != null);
D.assert(animationBehavior != null);
lowerBound = float.NegativeInfinity;
upperBound = float.PositiveInfinity;
_direction = _AnimationDirection.forward;
this.duration = duration;
this.reverseDuration = reverseDuration;
this.debugLabel = debugLabel;
this.animationBehavior = animationBehavior.Value;
_ticker = vsync.createTicker(_tick);
_internalSetValue(value);
}
