From 3b83eb41da11980aaebba9f7314a9cf6c529788e Mon Sep 17 00:00:00 2001
From: cosmonaut <evan@moonside.games>
Date: Fri, 26 Mar 2021 12:07:46 -0700
Subject: [PATCH] add LookAt method to Quaternion

---
 src/Math/Quaternion.cs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/Math/Quaternion.cs b/src/Math/Quaternion.cs
index 5a9b0aa0..c795b756 100644
--- a/src/Math/Quaternion.cs
+++ b/src/Math/Quaternion.cs
@@ -881,6 +881,16 @@ namespace MoonWorks.Math
 			result.W = quaternion.W * num;
 		}
 
+        public static Quaternion LookAt(in Vector3 forward, in Vector3 up)
+        {
+            Matrix4x4 orientation = Matrix4x4.Identity;
+            orientation.Forward = forward;
+            orientation.Right = Vector3.Normalize(Vector3.Cross(forward, up));
+            orientation.Up = Vector3.Cross(orientation.Right, forward);
+
+            return Quaternion.CreateFromRotationMatrix(orientation);
+        }
+
 		#endregion
 
 		#region Public Static Operator Overloads