From 8c55b1b5d0db4cd5ed2c50be2e02a5124fd70177 Mon Sep 17 00:00:00 2001
From: pharan <johndygit@live.com.ph>
Date: Wed, 24 Oct 2018 23:57:49 +0800
Subject: [PATCH] [csharp] Fix world-to-local and local-to-world rotation
 functions to account for local rotation and shearX.

based on : https://github.com/EsotericSoftware/spine-runtimes/commit/3851e201d80b2e4d2195b38c7980ea3cf9928c44
---
 spine-csharp/src/Bone.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/spine-csharp/src/Bone.cs b/spine-csharp/src/Bone.cs
index 21b471894..acc1a42ed 100644
--- a/spine-csharp/src/Bone.cs
+++ b/spine-csharp/src/Bone.cs
@@ -329,10 +329,11 @@ namespace Spine {
 
 		public float WorldToLocalRotation (float worldRotation) {
 			float sin = MathUtils.SinDeg(worldRotation), cos = MathUtils.CosDeg(worldRotation);
-			return MathUtils.Atan2(a * sin - c * cos, d * cos - b * sin) * MathUtils.RadDeg;
+			return MathUtils.Atan2(a * sin - c * cos, d * cos - b * sin) * MathUtils.RadDeg + rotation - shearX;
 		}
 
 		public float LocalToWorldRotation (float localRotation) {
+			localRotation -= rotation - shearX;
 			float sin = MathUtils.SinDeg(localRotation), cos = MathUtils.CosDeg(localRotation);
 			return MathUtils.Atan2(cos * c + sin * d, cos * a + sin * b) * MathUtils.RadDeg;
 		}