From 8bbbbfcafda418b47cf463c72568a8a84c90207f Mon Sep 17 00:00:00 2001
From: thechosenone124 <thechosenone124@gmail.com>
Date: Wed, 30 May 2018 23:36:37 -0700
Subject: [PATCH] Intermediate Function Is Improperly Done

The formula for calculating the intermediate for a SQUAD interpolation is

exp((log(next * invQuat) + log(prev * invQuat)) / static_cast<T>(-4)) * curr;

The current code uses addition instead of multiplication (based on http://web.mit.edu/2.998/www/QuaternionReport1.pdf)
---
 glm/gtx/quaternion.inl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/glm/gtx/quaternion.inl b/glm/gtx/quaternion.inl
index fde7a8fb..e2aa5102 100644
--- a/glm/gtx/quaternion.inl
+++ b/glm/gtx/quaternion.inl
@@ -45,7 +45,7 @@ namespace glm
 	)
 	{
 		tquat<T, Q> invQuat = inverse(curr);
-		return exp((log(next + invQuat) + log(prev + invQuat)) / static_cast<T>(-4)) * curr;
+		return exp((log(next * invQuat) + log(prev * invQuat)) / static_cast<T>(-4)) * curr;
 	}
 
 	template<typename T, qualifier Q>