[ts] Port of commit 8d058fb: Improved AnimationState behavior when paused. See #2705.

This commit is contained in:
Davide Tantillo 2024-12-10 14:14:21 +01:00
parent e9cce58a1f
commit 7e92141215

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@ -138,17 +138,19 @@ export class AnimationState {
from.animationLast = from.nextAnimationLast;
from.trackLast = from.nextTrackLast;
// Require mixTime > 0 to ensure the mixing from entry was applied at least once.
if (to.mixTime > 0 && to.mixTime >= to.mixDuration) {
// Require totalAlpha == 0 to ensure mixing is complete, unless mixDuration == 0 (the transition is a single frame).
if (from.totalAlpha == 0 || to.mixDuration == 0) {
if (to.nextTrackLast != -1) { // The from entry was applied at least once.
const discard = to.mixTime == 0 && from.mixTime == 0; // Discard the from entry when neither have advanced yet.
if (to.mixTime >= to.mixDuration || discard) {
// Require totalAlpha == 0 to ensure mixing is complete or the transition is a single frame or discarded.
if (from.totalAlpha == 0 || to.mixDuration == 0 || discard) {
to.mixingFrom = from.mixingFrom;
if (from.mixingFrom) from.mixingFrom.mixingTo = to;
if (from.mixingFrom != null) from.mixingFrom.mixingTo = to;
to.interruptAlpha = from.interruptAlpha;
this.queue.end(from);
}
return finished;
}
}
from.trackTime += delta * from.timeScale;
to.mixTime += delta;