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S2.44: confidence on the Roto Brush span bar

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Frames a tracker followed are coloured by its confidence (green, amber, red;
slate where the object was absent) and drawn taller; roto_trust reports them.
Not checked visually: no headless way to track without weights in a snapshot.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
This commit is contained in:
Kristian Myram
2026-10-30 08:43:31 +01:00
co-authored by Claude Sonnet 5.5
parent 0e0db685bf
commit 1ae5bb9839
3 changed files with 67 additions and 3 deletions
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crates/engine/src/analysis/roto.rs
+19
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@@ -838,6 +838,25 @@ impl Session {
changed
}
/// How far to trust the frames a tracker followed (SAM 2), by layer frame: its confidence and
/// whether the object was absent. Frames the classic engine made have no entry.
pub fn roto_trust(&self, comp: ItemId, layer: LayerId, effect: Uid) -> BTreeMap<i64, fx::FrameTrust> {
let mut out = BTreeMap::new();
let Some(c) = self.project.comp(comp) else { return out };
let Some(l) = c.layer(layer) else { return out };
let Some(g) = l.props.find_group(effect) else { return out };
if is_object_matte(g) {
return out;
}
let ch = fx::Chain::new(&params_static(g), layer_size(&self.project, c, l), c.frame_rate.as_f64(), 1.0);
for f in ch.keys.keys() {
if let Some(t) = ch.trust_at(*f) {
out.insert(*f, t);
}
}
out
}
/// The computed frames of an instance (full resolution), by layer frame.
pub fn roto_computed(&self, comp: ItemId, layer: LayerId, effect: Uid) -> BTreeMap<i64, bool> {
let mut out = BTreeMap::new();