Struct SceneEvaluator 

pub struct SceneEvaluator {
    cells: Vec<AnimNode>,
    total_secs: f64,
    audio: Arc<[f32]>,
    time_marks: Vec<(f64, TimeMark)>,
    clock: f64,
}

Lightweight scene evaluation session.

Fields

cells: Vec<AnimNode>

total_secs: f64

audio: Arc<[f32]>

time_marks: Vec<(f64, TimeMark)>

clock: f64

Implementations

impl SceneEvaluator

pub fn new(scene: SealedRanimScene, logic_fps: f64) -> Self

Consume a sealed scene and create a driving session.

logic_fps is retained only for call-site compatibility; it no longer drives stepping (each iterative segment owns its sim_step).

pub fn total_secs(&self) -> f64

Total scene duration.

pub fn has_audio(&self) -> bool

Whether any sound leaves live in the tree.

pub fn audio(&self) -> &Arc<[f32]>

The baked audio plane: interleaved stereo at the master sample rate over [0, total_secs] (shared, cheap to clone). Empty when the scene has no sound leaves.

pub fn mix_audio(&self, out_secs: f64, sample_rate: u32) -> Vec<f32>

The scene’s audio over [0, out_secs] as a fresh interleaved stereo buffer.

The audio plane was already mixed once at seal (RanimScene::seal); this is a prefix copy of that baked buffer, zero-padded past the scene end.

pub fn time_marks(&self) -> &[(f64, TimeMark)]

Scene time marks.

pub fn animation_infos(&self) -> Vec<AnimationInfo>

Hierarchical runtime animation information for preview tooling.

pub fn clock(&self) -> f64

Last sampled target (the clock reading for preview tooling).

pub fn sample_at(&mut self, render_secs: f64, out: &mut EvaluatedFrame)

Sample the scene at render_secs — the ONLY session interaction.

Every top-level cell evaluates itself at the target (forward/backward direction management is internal), and the extracted items carry the (animation_id, part) identities of SealedRanimScene::eval_at_sec.