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[ts] Port of commit 29bf262: Fix track 0 dip mixing to animation with key > frame 0.

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This commit is contained in:
Davide Tantillo 2026-03-18 14:50:19 +01:00
parent 556509adc8
commit e1ea92aad7
1 changed files with 12 additions and 13 deletions
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25
spine-ts/spine-core/src/AnimationState.ts
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@ -154,8 +154,8 @@ export class AnimationState {
return false;
}
/** Poses the skeleton using the track entry animations. There are no side effects other than invoking listeners, so the
* animation state can be applied to multiple skeletons to pose them identically.
/** Poses the skeleton using the track entry animations. The animation state is not changed, so can be applied to multiple
* skeletons to pose them identically.
* @returns True if any animations were applied. */
apply (skeleton: Skeleton): boolean {
if (!skeleton) throw new Error("skeleton cannot be null.");
@ -169,12 +169,14 @@ export class AnimationState {
const current = tracks[i];
if (!current || current.delay > 0) continue;
applied = true;
// Track 0 animations aren't for layering, so never use current values before the first key.
const blend: MixBlend = i === 0 ? MixBlend.first : current.mixBlend;
// Apply mixing from entries first.
let alpha = current.alpha;
if (current.mixingFrom)
alpha *= this.applyMixingFrom(current, skeleton, blend);
alpha *= this.applyMixingFrom(current, skeleton);
else if (current.trackTime >= current.trackEnd && !current.next)
alpha = 0;
let attachments = alpha >= current.alphaAttachmentThreshold;
@ -211,7 +213,7 @@ export class AnimationState {
for (let ii = 0; ii < timelineCount; ii++) {
const timeline = timelines[ii];
const timelineBlend = timelineMode[ii] === SUBSEQUENT ? blend : MixBlend.setup;
const timelineBlend = timelineMode[ii] === SUBSEQUENT ? current.mixBlend : MixBlend.setup;
if (!shortestRotation && timeline instanceof RotateTimeline) {
this.applyRotateTimeline(timeline, skeleton, applyTime, alpha, timelineBlend, current.timelinesRotation, ii << 1, firstFrame);
} else if (timeline instanceof AttachmentTimeline) {
@ -247,18 +249,16 @@ export class AnimationState {
return applied;
}
applyMixingFrom (to: TrackEntry, skeleton: Skeleton, blend: MixBlend) {
applyMixingFrom (to: TrackEntry, skeleton: Skeleton) {
const from = to.mixingFrom!;
if (from.mixingFrom) this.applyMixingFrom(from, skeleton, blend);
if (from.mixingFrom) this.applyMixingFrom(from, skeleton);
let mix = 0;
if (to.mixDuration === 0) { // Single frame mix to undo mixingFrom changes.
if (to.mixDuration === 0) // Single frame mix to undo mixingFrom changes.
mix = 1;
if (blend === MixBlend.first) blend = MixBlend.setup;
} else {
else {
mix = to.mixTime / to.mixDuration;
if (mix > 1) mix = 1;
if (blend !== MixBlend.first) blend = from.mixBlend;
}
const attachments = mix < from.mixAttachmentThreshold, drawOrder = mix < from.mixDrawOrderThreshold;
@ -272,6 +272,7 @@ export class AnimationState {
else if (mix < from.eventThreshold)
events = this.events;
const blend = from.mixBlend;
if (blend === MixBlend.add) {
for (let i = 0; i < timelineCount; i++)
timelines[i].apply(skeleton, animationLast, applyTime, events, alphaMix, blend, MixDirection.out, false);
@ -1011,9 +1012,7 @@ export class TrackEntry {
}
}
/** Controls how properties keyed in the animation are mixed with lower tracks. Defaults to {@link MixBlend#replace}, which
* replaces the values from the lower tracks with the animation values. {@link MixBlend#add} adds the animation values to
* the values from the lower tracks.
/** Controls how properties keyed in the animation are mixed with lower tracks. Defaults to {@link MixBlend#replace}.
*
* The `mixBlend` can be set for a new track entry only before {@link AnimationState#apply()} is next
* called. */