From 05344e805c18ef52ac986465ad19d59f64791095 Mon Sep 17 00:00:00 2001
From: Davide Tantillo <iamdjj@gmail.com>
Date: Wed, 18 Mar 2026 18:08:00 +0100
Subject: [PATCH] Fix follower offsetY with flip/mirror.

---
 spine-ts/spine-construct3/src/c3runtime/instance.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/spine-ts/spine-construct3/src/c3runtime/instance.ts b/spine-ts/spine-construct3/src/c3runtime/instance.ts
index a518bdedc..ff53fe8a4 100644
--- a/spine-ts/spine-construct3/src/c3runtime/instance.ts
+++ b/spine-ts/spine-construct3/src/c3runtime/instance.ts
@@ -916,8 +916,9 @@ class SpineC3Instance extends globalThis.ISDKWorldInstanceBase {
 					continue;
 				}
 
-				const rotatedOffsetX = follower.offsetX * cos - follower.offsetY * sin;
-				const rotatedOffsetY = follower.offsetX * sin + follower.offsetY * cos;
+				const offsetY = negateAngle ? -follower.offsetY : follower.offsetY;
+				const rotatedOffsetX = follower.offsetX * cos - offsetY * sin;
+				const rotatedOffsetY = follower.offsetX * sin + offsetY * cos;
 
 				instance.x = x + rotatedOffsetX;
 				instance.y = y + rotatedOffsetY;