Decay class abstract

Release-time decay model. Produces a Flutter Simulation for the rect's post-gesture motion given a starting position and velocity. Origin reads x(t), dx(t), isDone(t) on the returned simulation — anything that conforms to Simulation plugs in (friction, spring, custom).

Implementers

• ExponentialDecay

Constructors

Decay({double endVelocity = 60})

const

Decay.exponential(double drag, {double endVelocity})

const

factory

Decay.halfLife(Duration t, {double endVelocity})

factory

Decay.imageViewer({double endVelocity})

const

factory

Decay.iosFast({double endVelocity})

const

factory

Decay.iosScroll({double endVelocity})

const

factory

Decay.none({double endVelocity})

const

factory

Decay.perFrame(double multiplier, {double fps, double endVelocity})

factory

Properties

endVelocity → double

Velocity (logical px/s) at which the decay phase ends. Higher = snappier handoff to settle; lower = more "complete" tail. Default 60 ≈ 1 px/frame at 60 Hz, the inter-frame visibility threshold.

final

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

simulationAt({required double position, required double velocity}) → Simulation

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited