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Added TrackEntry#shortestRotation.

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This commit is contained in:
Nathan Sweet 2022-01-18 14:15:21 -04:00
parent 98ccc98435
commit 767a86025c
1 changed files with 20 additions and 5 deletions
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25
spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/AnimationState.java
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@ -242,14 +242,15 @@ public class AnimationState {
} else {
int[] timelineMode = current.timelineMode.items;
boolean firstFrame = current.timelinesRotation.size != timelineCount << 1;
boolean shortestRotation = current.shortestRotation;
boolean firstFrame = !shortestRotation && current.timelinesRotation.size != timelineCount << 1;
if (firstFrame) current.timelinesRotation.setSize(timelineCount << 1);
float[] timelinesRotation = current.timelinesRotation.items;
for (int ii = 0; ii < timelineCount; ii++) {
Timeline timeline = (Timeline)timelines[ii];
MixBlend timelineBlend = timelineMode[ii] == SUBSEQUENT ? blend : MixBlend.setup;
if (timeline instanceof RotateTimeline) {
if (!shortestRotation && timeline instanceof RotateTimeline) {
applyRotateTimeline((RotateTimeline)timeline, skeleton, applyTime, mix, timelineBlend, timelinesRotation,
ii << 1, firstFrame);
} else if (timeline instanceof AttachmentTimeline)
@ -315,7 +316,8 @@ public class AnimationState {
int[] timelineMode = from.timelineMode.items;
Object[] timelineHoldMix = from.timelineHoldMix.items;
boolean firstFrame = from.timelinesRotation.size != timelineCount << 1;
boolean shortestRotation = from.shortestRotation;
boolean firstFrame = !shortestRotation && from.timelinesRotation.size != timelineCount << 1;
if (firstFrame) from.timelinesRotation.setSize(timelineCount << 1);
float[] timelinesRotation = from.timelinesRotation.items;
@ -350,7 +352,7 @@ public class AnimationState {
break;
}
from.totalAlpha += alpha;
if (timeline instanceof RotateTimeline) {
if (!shortestRotation && timeline instanceof RotateTimeline) {
applyRotateTimeline((RotateTimeline)timeline, skeleton, applyTime, alpha, timelineBlend, timelinesRotation, i << 1,
firstFrame);
} else if (timeline instanceof AttachmentTimeline)
@ -871,7 +873,7 @@ public class AnimationState {
@Null TrackEntry previous, next, mixingFrom, mixingTo;
@Null AnimationStateListener listener;
int trackIndex;
boolean loop, holdPrevious, reverse;
boolean loop, holdPrevious, reverse, shortestRotation;
float eventThreshold, attachmentThreshold, drawOrderThreshold;
float animationStart, animationEnd, animationLast, nextAnimationLast;
float delay, trackTime, trackLast, nextTrackLast, trackEnd, timeScale;
@ -1205,6 +1207,19 @@ public class AnimationState {
return holdPrevious;
}
public void setShortestRotation (boolean shortestRotation) {
this.shortestRotation = shortestRotation;
}
/** If true, mixing rotation between tracks always uses the shortest rotation direction. When the rotation is animation the
* shortest rotation direction may change during the mix.
* <p>
* If false, the shortest rotation direction is remembered when the mix starts and the same direction is used for the rest
* of the mix. Defaults to false. */
public boolean getShortestRotation () {
return shortestRotation;
}
/** Resets the rotation directions for mixing this entry's rotate timelines. This can be useful to avoid bones rotating the
* long way around when using {@link #alpha} and starting animations on other tracks.
* <p>