Struct Animator 

pub struct Animator { /* private fields */ }

Tracks a set of keyed transitions and advances them frame by frame.

Each animation is identified by a caller-chosen u64 key; starting a new animation with an existing key replaces it (so a re-triggered hover doesn’t stack). Animator::advance adds dt seconds to every active animation and drops the finished ones.

Implementations

impl Animator

pub fn new() -> Self

Create an empty animator.

pub fn active_count(&self) -> usize

Number of currently-active animations.

pub fn is_animating(&self) -> bool

Returns true if any animation is in flight.

pub fn start(&mut self, key: u64, start: f32, end: f32, transition: Transition)

Start (or restart) the animation under key, interpolating start → end over transition. Any existing animation with the same key is replaced and its elapsed time reset.

pub fn value(&self, key: u64) -> Option<f32>

The current value of the animation under key, or None if no such animation is active.

pub fn advance(&mut self, dt: f32) -> usize

Advance every active animation by dt seconds, removing any that have finished. Returns the number still active afterwards.

pub fn cancel(&mut self, key: u64) -> bool

Cancel the animation under key. Returns true if one was removed.

Trait Implementations

impl Debug for Animator

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Animator

fn default() -> Animator

Returns the “default value” for a type.