From 24e5d4635d50d01d78db48f0640948f6adaf67ff Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Sun, 7 Nov 2021 21:39:09 +0100
Subject: [PATCH] Add `Mathf.Frac`

---
 Source/Engine/Core/Math/Mathf.cs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Source/Engine/Core/Math/Mathf.cs b/Source/Engine/Core/Math/Mathf.cs
index 488c46777..21a800a51 100644
--- a/Source/Engine/Core/Math/Mathf.cs
+++ b/Source/Engine/Core/Math/Mathf.cs
@@ -539,6 +539,16 @@ namespace FlaxEngine
             return (float)Math.Sin(f);
         }
 
+        /// <summary>
+        /// Returns signed fractional part of a float.
+        /// </summary>
+        /// <param name="value">Floating point value to convert.</param>
+        /// <returns>A float between [0 ; 1) for nonnegative input. A float between [-1; 0) for negative input.</returns>
+        public static float Frac(float value)
+        {
+            return value - (int)value;
+        }
+
         /// <summary>
         /// Gradually changes a value towards a desired goal over time with smoothing.
         /// </summary>