From b17d3668a25a56a1fa5f468f03222265520377ad Mon Sep 17 00:00:00 2001
From: stfx <stfx@hotmail.de>
Date: Mon, 20 Nov 2017 18:21:18 +0100
Subject: [PATCH] Partly revert last commit

---
 glm/gtx/quaternion.inl | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/glm/gtx/quaternion.inl b/glm/gtx/quaternion.inl
index caae63ad..0e267ed8 100644
--- a/glm/gtx/quaternion.inl
+++ b/glm/gtx/quaternion.inl
@@ -230,13 +230,10 @@ namespace glm
 	template<typename T, qualifier Q>
 	GLM_FUNC_QUALIFIER tquat<T, Q> quatLookAtRH(vec<3, T, Q> const& direction, vec<3, T, Q> const& up)
 	{
-		vec<3, T, Q> const invertedDirection(-direction);
-		vec<3, T, Q> const right(normalize(cross(up, invertedDirection)));
-
 		mat<3, 3, T, Q> result;
-		result[0] = right;
-		result[1] = cross(invertedDirection, right);
-		result[2] = invertedDirection;
+		result[2] = -direction;
+		result[0] = normalize(cross(up, Result[2]));
+		result[1] = cross(Result[2], Result[0]);
 
 		return quat_cast(result);
 	}
@@ -244,11 +241,9 @@ namespace glm
 	template<typename T, qualifier Q>
 	GLM_FUNC_QUALIFIER tquat<T, Q> quatLookAtLH(vec<3, T, Q> const& direction, vec<3, T, Q> const& up)
 	{
-		vec<3, T, Q> const right(normalize(cross(up, direction)));
-
 		mat<3, 3, T, Q> result;
-		result[0] = right;
-		result[1] = cross(direction, right);
+		result[0] = normalize(cross(up, direction));
+		result[1] = cross(direction, result[0]);
 		result[2] = direction;
 
 		return quat_cast(result);