TrackingEffect class

Spreads characters apart horizontally like adjustable letter-spacing.

Characters move outward from the center (or from the left edge when fromCenter is false) by spacing pixels, creating a tracking/tracking-in animation. Useful for title reveals where letters spread into position.

Inheritance

Constructors

TrackingEffect({Duration duration = const Duration(milliseconds: 800), Curve curve = Curves.easeOut, Duration delayBetweenChars = Duration.zero, double spacing = 30.0, bool fromCenter = true})
Creates a tracking/spacing animation.
const

Properties

curve → Curve
Curve applied to the animation timing for easing.
finalinherited
delayBetweenChars → Duration
Delay between each successive character's animation start.
finalinherited
duration → Duration
Total duration of one full animation cycle for a single character.
finalinherited
fromCenter → bool
When true, characters spread outward symmetrically from the text center. When false, characters spread rightward from the first character.
final
hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
spacing → double
Final horizontal distance between adjacent character centers in pixels.
final

Methods

applyCurve(double t) → double
Applies the effect's curve to a linear value t (0.0–1.0).
inherited
getAnimations(double progress, int charCount) → List<CharacterAnimation>
Produces a list of per-character animations for the given progress.
override
getTotalDuration(int charCount) → Duration
Returns the total duration needed to animate all charCount characters.
inherited
noise(int index, [int offset = 0]) → double
Returns a deterministic pseudo-random value (0.0–1.0) for the given index and optional offset.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
staggeredProgress(double globalProgress, int index, int charCount) → double
Computes the per-character progress for staggered animations.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited