From 3da17918aacacdf16895a32231c571a55b691d53 Mon Sep 17 00:00:00 2001
From: Nejcraft <nejcraftplays@gmail.com>
Date: Sat, 20 Feb 2021 14:58:05 +0100
Subject: [PATCH] Overloaded

---
 Source/Engine/Core/Math/Quaternion.cs | 40 ++++++++++++++++++++++-----
 1 file changed, 33 insertions(+), 7 deletions(-)

diff --git a/Source/Engine/Core/Math/Quaternion.cs b/Source/Engine/Core/Math/Quaternion.cs
index 19eb199fe..fb763154e 100644
--- a/Source/Engine/Core/Math/Quaternion.cs
+++ b/Source/Engine/Core/Math/Quaternion.cs
@@ -967,7 +967,17 @@ namespace FlaxEngine
             Matrix3x3.LookAt(ref eye, ref target, ref up, out var matrix);
             RotationMatrix(ref matrix, out result);
         }
-
+        
+        /// <summary>
+        /// Creates a left-handed, look-at quaternion.
+        /// </summary>
+        /// <param name="eye">The position of the viewer's eye.</param>
+        /// <param name="target">The camera look-at target.</param>
+        /// <returns>The created look-at quaternion.</returns>
+        public static Quaternion LookAt(Vector3 eye, Vector3 target){
+            return LookAt(eye, target, Vector3.Up);
+        }
+        
         /// <summary>
         /// Creates a left-handed, look-at quaternion.
         /// </summary>
@@ -975,10 +985,8 @@ namespace FlaxEngine
         /// <param name="target">The camera look-at target.</param>
         /// <param name="up">The camera's up vector.</param>
         /// <returns>The created look-at quaternion.</returns>
-        public static Quaternion LookAt(Vector3 eye, Vector3 target, Vector3 up  = null)
+        public static Quaternion LookAt(Vector3 eye, Vector3 target, Vector3 up)
         {
-            if(up == null)
-                up = Vector3.Up;
             LookAt(ref eye, ref target, ref up, out var result);
             return result;
         }
@@ -995,20 +1003,38 @@ namespace FlaxEngine
             LookAt(ref eye, ref forward, ref up, out result);
         }
 
+        /// <summary>
+        /// Creates a left-handed, look-at quaternion.
+        /// </summary>
+        /// <param name="forward">The camera's forward direction.</param>
+        /// <returns>The created look-at quaternion.</returns>
+        public static Quaternion RotationLookAt(Vector3 forward)
+        {
+            return RotationLookAt(forward, Vector3.Up);
+        }
+        
         /// <summary>
         /// Creates a left-handed, look-at quaternion.
         /// </summary>
         /// <param name="forward">The camera's forward direction.</param>
         /// <param name="up">The camera's up vector.</param>
         /// <returns>The created look-at quaternion.</returns>
-        public static Quaternion RotationLookAt(Vector3 forward, Vector3 up = null)
+        public static Quaternion RotationLookAt(Vector3 forward, Vector3 up)
         {
-            if(up == null)
-                up = Vector3.Up;
             RotationLookAt(ref forward, ref up, out var result);
             return result;
         }
 
+        /// <summary>
+        /// Creates a rotation with the specified forward and upwards directions.
+        /// </summary>
+        /// <param name="forward">The forward direction. Direction to orient towards.</param>
+        /// <returns>The calculated quaternion.</returns>
+        public static Quaternion LookRotation(Vector3 forward)
+        {
+            return LookRotation(forward, Vector3.Up);
+        }
+
         /// <summary>
         /// Creates a rotation with the specified forward and upwards directions.
         /// </summary>