Struct ExprTrack 

pub struct ExprTrack {
    pub name: String,
    pub keyframes: Vec<ExprKeyframe>,
    pub loop_mode: SeqLoopMode,
}

A named sequence of ExprKeyframes.

Fields

name: String

Human-readable name for this track (e.g. "happy_cycle").

keyframes: Vec<ExprKeyframe>

Keyframes sorted ascending by time.

loop_mode: SeqLoopMode

Looping behaviour.

Implementations

impl ExprTrack

pub fn new(name: &str) -> Self

Create a new, empty track with the given name.

pub fn add_keyframe(&mut self, kf: ExprKeyframe)

Insert a keyframe, keeping the list sorted by time.

pub fn remove_keyframe(&mut self, idx: usize)

Remove the keyframe at idx (no-op if out of bounds).

pub fn duration(&self) -> f32

Total track duration: time of the last keyframe plus its hold.

pub fn evaluate(&self, t_in: f32) -> ExprWeights

Evaluate expression weights at time t_in, respecting loop mode and easing.