From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 9 Feb 2020 22:07:37 +0000 (+0200)
Subject: Fix euler angle calculation in Transform
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=dd1a7cf2d8ce7bef1744f5a8cae5475104ea5438;p=libs%2Fgl.git

Fix euler angle calculation in Transform
---

diff --git a/source/transform.cpp b/source/transform.cpp
index 6862221b..b703a5b1 100644
--- a/source/transform.cpp
+++ b/source/transform.cpp
@@ -17,7 +17,7 @@ Transform Transform::from_matrix(const Matrix &matrix)
 
 	trn.euler.z = Geometry::atan2<float>(matrix(1, 0), matrix(0, 0));
 	Matrix m = Matrix::rotation(-trn.euler.z, Vector3(0.0f, 0.0f, 1.0f))*matrix;
-	trn.euler.y = Geometry::atan2<float>(m(2, 0), m(0, 0));
+	trn.euler.y = Geometry::atan2<float>(-m(2, 0), m(0, 0));
 	m = Matrix::rotation(-trn.euler.y, Vector3(0.0f, 1.0f, 0.0f))*m;
 	trn.euler.x = Geometry::atan2<float>(m(2, 1), m(1, 1));
 	m = Matrix::rotation(-trn.euler.x, Vector3(1.0f, 0.0f, 0.0f))*m;