From 120127b10c2f7138955df07412c3e114cb610b0e Mon Sep 17 00:00:00 2001
From: Ne_Eo <NeeEoo@users.noreply.github.com>
Date: Tue, 1 Oct 2024 02:02:37 +0200
Subject: [PATCH] Small optimizations + bug fix for atlases

---
 source/funkin/backend/FlxAnimate.hx | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/source/funkin/backend/FlxAnimate.hx b/source/funkin/backend/FlxAnimate.hx
index 9f49f9ff..5f92e9a4 100644
--- a/source/funkin/backend/FlxAnimate.hx
+++ b/source/funkin/backend/FlxAnimate.hx
@@ -28,10 +28,13 @@ class FlxAnimate extends flxanimate.FlxAnimate {
 			if (limb != _pivot) {
 				if (frameOffsetAngle != null && frameOffsetAngle != angle)
 				{
-					var angleOff = (-angle + frameOffsetAngle) * FlxAngle.TO_RAD;
-					rMatrix.rotate(-angleOff);
+					var angleOff = (frameOffsetAngle - angle) * FlxAngle.TO_RAD;
+					var cos = Math.cos(angleOff);
+					var sin = Math.sin(angleOff);
+					// cos doesnt need to be negated
+					rMatrix.rotateWithTrig(cos, -sin);
 					rMatrix.translate(-frameOffset.x, -frameOffset.y);
-					rMatrix.rotate(angleOff);
+					rMatrix.rotateWithTrig(cos, sin);
 				}
 				else
 				{