diff --git a/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/TimelineExtensions.cs b/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/TimelineExtensions.cs
new file mode 100644
index 000000000..03f14aa55
--- /dev/null
+++ b/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/TimelineExtensions.cs
@@ -0,0 +1,91 @@
+/******************************************************************************
+ * Spine Runtimes License Agreement
+ * Last updated January 1, 2020. Replaces all prior versions.
+ *
+ * Copyright (c) 2013-2020, Esoteric Software LLC
+ *
+ * Integration of the Spine Runtimes into software or otherwise creating
+ * derivative works of the Spine Runtimes is permitted under the terms and
+ * conditions of Section 2 of the Spine Editor License Agreement:
+ * http://esotericsoftware.com/spine-editor-license
+ *
+ * Otherwise, it is permitted to integrate the Spine Runtimes into software
+ * or otherwise create derivative works of the Spine Runtimes (collectively,
+ * "Products"), provided that each user of the Products must obtain their own
+ * Spine Editor license and redistribution of the Products in any form must
+ * include this license and copyright notice.
+ *
+ * THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
+ * BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
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+ *****************************************************************************/
+
+using UnityEngine;
+using System.Collections.Generic;
+using System.Collections;
+
+namespace Spine.Unity.AnimationTools {
+ public static class TimelineExtensions {
+
+ /// Evaluates the resulting value of a TranslateTimeline at a given time.
+ /// SkeletonData can be accessed from Skeleton.Data or from SkeletonDataAsset.GetSkeletonData.
+ /// If no SkeletonData is given, values are computed relative to setup pose instead of local-absolute.
+ public static Vector2 Evaluate (this TranslateTimeline timeline, float time, SkeletonData skeletonData = null) {
+ const int PREV_TIME = -3, PREV_X = -2, PREV_Y = -1;
+ const int X = 1, Y = 2;
+
+ var frames = timeline.frames;
+ if (time < frames[0]) return Vector2.zero;
+
+ float x, y;
+ if (time >= frames[frames.Length - TranslateTimeline.ENTRIES]) { // Time is after last frame.
+ x = frames[frames.Length + PREV_X];
+ y = frames[frames.Length + PREV_Y];
+ }
+ else {
+ // Interpolate between the previous frame and the current frame.
+ int frame = Animation.BinarySearch(frames, time, TranslateTimeline.ENTRIES);
+ x = frames[frame + PREV_X];
+ y = frames[frame + PREV_Y];
+ float frameTime = frames[frame];
+ float percent = timeline.GetCurvePercent(frame / TranslateTimeline.ENTRIES - 1,
+ 1 - (time - frameTime) / (frames[frame + PREV_TIME] - frameTime));
+
+ x += (frames[frame + X] - x) * percent;
+ y += (frames[frame + Y] - y) * percent;
+ }
+
+ Vector2 xy = new Vector2(x, y);
+ if (skeletonData == null) {
+ return xy;
+ }
+ else {
+ var boneData = skeletonData.bones.Items[timeline.boneIndex];
+ return xy + new Vector2(boneData.x, boneData.y);
+ }
+ }
+
+ /// Gets the translate timeline for a given boneIndex.
+ /// You can get the boneIndex using SkeletonData.FindBoneIndex.
+ /// The root bone is always boneIndex 0.
+ /// This will return null if a TranslateTimeline is not found.
+ public static TranslateTimeline FindTranslateTimelineForBone (this Animation a, int boneIndex) {
+ foreach (var timeline in a.timelines) {
+ if (timeline.GetType().IsSubclassOf(typeof(TranslateTimeline)))
+ continue;
+
+ var translateTimeline = timeline as TranslateTimeline;
+ if (translateTimeline != null && translateTimeline.boneIndex == boneIndex)
+ return translateTimeline;
+ }
+ return null;
+ }
+ }
+}
diff --git a/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/TimelineExtensions.cs.meta b/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/TimelineExtensions.cs.meta
new file mode 100644
index 000000000..6198f84aa
--- /dev/null
+++ b/spine-unity/Assets/Spine/Runtime/spine-unity/Utility/TimelineExtensions.cs.meta
@@ -0,0 +1,12 @@
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