Playback state of an AnimationMixer. Deliberately the same vocabulary
as TweenState and TimelineState, which is what lets all three satisfy one
Advanceable (see ./animation-system.js) and lets a prepared mixer satisfy
TimelineChild (see ./timeline.js).
"idle" — built, possibly armed with AnimationMixer.prepare, but
nothing is bound or claimed yet.
Playback state of an AnimationMixer. Deliberately the same vocabulary as
TweenStateandTimelineState, which is what lets all three satisfy oneAdvanceable(see./animation-system.js) and lets a prepared mixer satisfyTimelineChild(see./timeline.js)."idle"— built, possibly armed with AnimationMixer.prepare, but nothing is bound or claimed yet."running"— AnimationMixer.advance moves it."paused"— AnimationMixer.resume puts it back to"running"."finished"— an advance carried playback to the end. The properties are released for other writers and the mixer can still be scrubbed."stopped"— AnimationMixer.stop was called; the mixer writes nothing further and values stay where the last write put them.