[libgdx] Reset to setup pose when trackEnd is reached.

spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/AnimationState.java

@@ -108,9 +108,7 @@ public class AnimationState {
 					}
 					continue;
 				}
-				updateMixingFrom(current, delta);
 			} else {
-				updateMixingFrom(current, delta);
 				// Clear the track when there is no next entry, the track end time is reached, and there is no mixingFrom.
 				if (current.trackLast >= current.trackEnd && current.mixingFrom == null) {
 					tracks.set(i, null);
@@ -119,6 +117,7 @@ public class AnimationState {
 					continue;
 				}
 			}
+			updateMixingFrom(current, delta);
 
 			current.trackTime += currentDelta;
 		}
@@ -158,7 +157,10 @@ public class AnimationState {
 
 			// Apply mixing from entries first.
 			float mix = current.alpha;
-			if (current.mixingFrom != null) mix *= applyMixingFrom(current, skeleton);
+			if (current.mixingFrom != null)
+				mix *= applyMixingFrom(current, skeleton);
+			else if (current.trackTime >= current.trackEnd) //
+				mix = 0; // Set to setup pose the last time the entry will be applied.
 
 			// Apply current entry.
 			float animationLast = current.animationLast, animationTime = current.getAnimationTime();
@@ -750,10 +752,10 @@ public class AnimationState {
 		/** The track time in seconds when this animation will be removed from the track. Defaults to the animation
 		 * {@link Animation#duration} for non-looping animations and the highest float possible for looping animations. If the track
 		 * end time is reached, no other animations are queued for playback, and mixing from any previous animations is complete,
-		 * then the track is cleared, leaving skeletons in their previous pose.
+		 * then the properties keyed by the animation are set to the setup pose and the track is cleared.
 		 * <p>
-		 * It may be desired to use {@link AnimationState#addEmptyAnimation(int, float, float)} to mix the skeletons back to the
-		 * setup pose, rather than leaving them in their previous pose. */
+		 * It may be desired to use {@link AnimationState#addEmptyAnimation(int, float, float)} to mix the properties back to the
+		 * setup pose over time, rather than have it happen instantly. */
 		public float getTrackEnd () {
 			return trackEnd;
 		}

spine-libgdx/spine-skeletonviewer/src/com/esotericsoftware/spine/SkeletonViewer.java

@@ -227,10 +227,8 @@ public class SkeletonViewer extends ApplicationAdapter {
 			state.setEmptyAnimation(track, 0);
 			entry = state.addAnimation(track, ui.animationList.getSelected(), ui.loopCheckbox.isChecked(), 0);
 			entry.setMixDuration(ui.mixSlider.getValue());
-			entry.setTrackEnd(Integer.MAX_VALUE);
 		} else {
 			entry = state.setAnimation(track, ui.animationList.getSelected(), ui.loopCheckbox.isChecked());
-			entry.setTrackEnd(Integer.MAX_VALUE);
 		}
 		entry.setAlpha(ui.alphaSlider.getValue());
 	}
@@ -705,6 +703,12 @@ public class SkeletonViewer extends ApplicationAdapter {
 		}
 
 		void render () {
+			if (state.getCurrent(ui.trackButtons.getCheckedIndex()) == null) {
+				ui.animationList.getSelection().setProgrammaticChangeEvents(false);
+				ui.animationList.setSelected(null);
+				ui.animationList.getSelection().setProgrammaticChangeEvents(true);
+			}
+
 			statusLabel.pack();
 			if (minimizeButton.isChecked())
 				statusLabel.setPosition(10, 25, Align.bottom | Align.left);