From 9a5db2ff8e745151f15281f40ab78fa55fa8ee6d Mon Sep 17 00:00:00 2001
From: rkrahn <rkrahn@users.noreply.github.com>
Date: Thu, 15 Feb 2024 14:51:55 -0800
Subject: [PATCH 1/2] Add NextUnitCircleVector2 extension method

Adds the NextUnitCircleVector2 extension method which produces a Vector2 on a unit circle with a magnitude equal to the radius.
---
 Source/Engine/Utilities/Extensions.cs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Source/Engine/Utilities/Extensions.cs b/Source/Engine/Utilities/Extensions.cs
index a1834624e..dde5eb5c7 100644
--- a/Source/Engine/Utilities/Extensions.cs
+++ b/Source/Engine/Utilities/Extensions.cs
@@ -300,6 +300,18 @@ namespace FlaxEngine.Utilities
             var randomRadius = (float)random.NextDouble() * radius;
             return new Vector2((float)Math.Cos(random.NextDouble()) * randomRadius, (float)Math.Sin(random.NextDouble()) * randomRadius);
         }
+        
+        /// <summary>
+        /// Generates a random <see cref="Vector2"/> point on a circle of a given radius.
+        /// </summary>
+        /// <param name="random">An instance of <see cref="Random"/>.</param>
+        /// <param name="radius">Radius of circle. Default 1.0f./>.</param>
+        /// <returns>A random <see cref="Vector2"/>.</returns>
+        public static Vector2 NextUnitCircleVector2(this Random random, float radius = 1.0f)
+        {
+            double randomDegree = random.NextDouble() * 360;
+            return new Vector2((float)Math.Cos(randomDegree) * radius, (float)Math.Sin(randomDegree) * radius);
+        }
 
         /// <summary>
         /// Generates a uniformly distributed random unit length vector point on a unit sphere.

From 8aaf7417cc796f856cc811f9d3e8c2fef2b9f3f2 Mon Sep 17 00:00:00 2001
From: rkrahn <rkrahn@users.noreply.github.com>
Date: Mon, 19 Feb 2024 13:04:26 -0800
Subject: [PATCH 2/2] Fix NextUnitCircleVector2 degree to radian

Fixes the use of degrees when radians should be used.
---
 Source/Engine/Utilities/Extensions.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Source/Engine/Utilities/Extensions.cs b/Source/Engine/Utilities/Extensions.cs
index dde5eb5c7..5530673fc 100644
--- a/Source/Engine/Utilities/Extensions.cs
+++ b/Source/Engine/Utilities/Extensions.cs
@@ -309,8 +309,8 @@ namespace FlaxEngine.Utilities
         /// <returns>A random <see cref="Vector2"/>.</returns>
         public static Vector2 NextUnitCircleVector2(this Random random, float radius = 1.0f)
         {
-            double randomDegree = random.NextDouble() * 360;
-            return new Vector2((float)Math.Cos(randomDegree) * radius, (float)Math.Sin(randomDegree) * radius);
+            double randomRadian = random.NextDouble() * Mathf.RevolutionsToRadians;
+            return new Vector2((float)Math.Cos(randomRadian) * radius, (float)Math.Sin(randomRadian) * radius);
         }
 
         /// <summary>