controls/io.nacular.doodle.controls.carousel/DampedTransitioner

DampedTransitioner

open class DampedTransitioner<T>(timer: Timer, scheduler: AnimationScheduler, decelerationTime: Measure<Time> = 1 * seconds, dampLevel: Measure<InverseUnits<Time>> = 10 / seconds) : CarouselBehavior.Transitioner<T> (source)

Carousel Transitioner that provides smooth, physics-based deceleration at the end of a Carousel's manual movement.

Parameters

timer

used to track current time

scheduler

used to manage animation

decelerationTime

indicating how quickly stops should decelerate to 0 velocity

dampLevel

indicating how much critical damping should be applied during stopping

See also

Constructors

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constructor(timer: Timer, scheduler: AnimationScheduler, decelerationTime: Measure<Time> = 1 * seconds, dampLevel: Measure<InverseUnits<Time>> = 10 / seconds)

Functions

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open override fun moveEnded(carousel: Carousel<T, *>, position: Vector2D, markers: Carousel.ItemMarkers, decelerateWhile: (Vector2D) -> Carousel.ItemMarkers): Completable

Notified whenever carousel has ended a manual move. This is where a transition animation would take place to smoothly move to the desired end item.

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open override fun moveStarted(carousel: Carousel<T, *>, position: Vector2D)

Notified whenever carousel has started a manual move. This is a good point for Transitioners to start tracking movement state if they wish to provide smooth animation when moveEnded is called.

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open override fun moveUpdated(carousel: Carousel<T, *>, position: Vector2D)

Notified whenever carousel has moves during a manual move (called after moveStarted). Transitioners can use this to keep track of things like movement velocity if they wish to provide smooth animation when moveEnded is called.

Inherited functions

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open fun transition(carousel: Carousel<T, *>, startItem: Int, endItem: Int, update: (progress: Float) -> Unit): Pausable

Defines how a Carousel should transition between items. The default is to instantaneously jump between items. But this API allows for animating this movement.