From 397c8fd8f886696068e22653b055298749eedc79 Mon Sep 17 00:00:00 2001
From: NathanSweet <nathan.sweet@gmail.com>
Date: Thu, 20 Oct 2016 14:28:06 +0200
Subject: [PATCH] Documented updateCacheReset.

---
 .../spine-libgdx/src/com/esotericsoftware/spine/Skeleton.java  | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Skeleton.java b/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Skeleton.java
index f8c54f938..5de30788a 100644
--- a/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Skeleton.java
+++ b/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Skeleton.java
@@ -292,6 +292,9 @@ public class Skeleton {
 
 	/** Updates the world transform for each bone and applies constraints. */
 	public void updateWorldTransform () {
+		// This partial update avoids computing the world transform for constrained bones when 1) the bone is not updated
+		// before the constraint, 2) the constraint only needs to access the applied local transform, and 3) the constraint calls
+		// updateWorldTransform.
 		Array<Bone> updateCacheReset = this.updateCacheReset;
 		for (int i = 0, n = updateCacheReset.size; i < n; i++) {
 			Bone bone = updateCacheReset.get(i);