From f5a6b4bf92b408f7d5e76d3e9ea2ae7491a9eda6 Mon Sep 17 00:00:00 2001
From: badlogic <badlogicgames@gmail.com>
Date: Mon, 7 Nov 2016 12:26:11 +0100
Subject: [PATCH] PathConstraint needs to take into account flipX/Y or parent
 scale. Determining handedness of base vectors let's us compensate

---
 .../src/com/esotericsoftware/spine/PathConstraint.java         | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/PathConstraint.java b/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/PathConstraint.java
index de573b955..fcac1238b 100644
--- a/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/PathConstraint.java
+++ b/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/PathConstraint.java
@@ -149,7 +149,8 @@ public class PathConstraint implements Constraint {
 					r = positions[p + 2];
 				else
 					r = atan2(dy, dx);
-				r -= atan2(c, a) - offsetRotation * degRad;
+				float det = a * d - b * c;				
+				r -= atan2(c, a) + (det > 0 ? -offsetRotation * degRad : offsetRotation * degRad);				
 				if (tip) {
 					cos = cos(r);
 					sin = sin(r);