Modules

• ease

  Easing curves with GSAP's names: power1–power4 (and quad, cubic, quart, quint, strong), sine, expo, circ, back, elastic, bounce, steps(n), cubic-bezier(…) and none/linear, each with .in, .out (the default) and .inOut.

• scroll

  ScrollTrigger maths: when an element crosses lines in the viewport, and how far through a scrubbed range the scroll is.

• spec

  Declarative motion: the motion* template attributes, presets, and text splitting.

• timeline

  Tweens, staggers and timelines — pure timing. Values are filled in by a runtime (the DOM, a 3D scene) which reads start values and applies Samples.

• transform

  GSAP-style transform properties (x, y, rotation, scale, …) composed into one CSS transform, plus property-name helpers.

• value

  Interpolating CSS-ish values the way GSAP does: numbers with units, colours (hex, rgb(), rgba(), hsl(), named), relative values ("+=40"), and compound strings ("0 0 20px rgba(0,0,0,.5)") whose numbers are tweened while the rest stays put.

Structs

• Anchor

  A point on the trigger element or viewport: a fraction of its height plus pixels ("top" = 0, "center" = 0.5, "bottom" = 1, "80%", "100px", "center+=40").

• Ease

  An easing function.

• Edge

  "<trigger anchor> <viewport anchor>", e.g. "top 80%": the moment the trigger's top reaches 80% down the viewport.

• Entry

  A timeline's child and where it starts.

• MotionSpec

  A parsed declarative animation.

• Prop

  One animated property: optional explicit start, and the end value. A missing from means "the current value"; a missing to (a from() tween) means "back to the current value".

• Sample

  A value to apply: target target of tween tween gets prop = value.

• ScrollTrigger

  When a scroll-triggered animation plays: where it starts and ends in the viewport, whether it's scrubbed, and what each crossing does.

• Stagger

  GSAP's stagger: a delay between targets (each) or spread over a total (amount), from a point in the list or a grid, optionally eased.

• Timeline

  A sequence of tweens with labels, repeat and yoyo.

• Transform

  One element's transform state.

• Tween

  A tween over count targets.

Enums

• Action

  What to do on each crossing (GSAP's toggleActions).

• Crossing

  A crossing of the start or end line.

• Curve

  The shape of an easing curve, before its direction is applied.

• Dir

  Which end of an easing curve eases: the start (In), the end (Out) or both (InOut).

• From

  Where a staggered sequence starts from.

• Position

  GSAP's position parameter.

• SplitBy

  How to split text for per-character or per-word animation.

• Trigger

  When a declarative animation runs.

Functions

pub fn canonical(prop: &str) -> &str

pub fn interpolate(from: &str, to: &str, progress: f64) -> String

pub fn is_transform(prop: &str) -> bool

pub fn kebab(prop: &str) -> String

pub fn parse_color(s: &str) -> Option<[f64; 4]>

pub fn parse_props(s: &str) -> Vec<(String, String)>

pub fn preset_names() -> Vec<&'static str>

pub fn resolve_relative(current: &str, target: &str) -> String

pub fn shape(s: &str) -> Shape

pub fn split_text(text: &str, by: SplitBy) -> Vec<(String, bool)>

Constants

pub const TRANSFORM_PROPS: &[(&str, f64, &str)] = _;