Function clip_transitions

fn clip_transitions<'a>(
    track: &'a Track,
    clip: &Clip,
) -> [Option<(f64, f64, &'a Transition, bool)>; 2]

The (still valid) transitions whose window this clip plays in (windows clamped to the cut’s clips, so an over-long transition cannot drag a clip past its neighbours — same rule as the compositor).