From 354521ec51cd177f2b76a9c683910452adcb7497 Mon Sep 17 00:00:00 2001
From: "Valeriano A.R" <valen.alfonso@protonmail.com>
Date: Sun, 3 Oct 2021 13:58:20 +0200
Subject: [PATCH] Utils: CosineInterpolation

---
 src/Util.c | 2 ++
 src/Util.h | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/src/Util.c b/src/Util.c
index 547b1ae..9abfcb3 100644
--- a/src/Util.c
+++ b/src/Util.c
@@ -8,6 +8,8 @@
 
 #include "Util.h"
 
+float CosineInterpolation(float f) { return (1.0f - cos(f * Pi)) * 0.5f; }
+
 /////////////////////////////
 // SolveQuadratic
 //
diff --git a/src/Util.h b/src/Util.h
index cebe078..f084b48 100644
--- a/src/Util.h
+++ b/src/Util.h
@@ -6,6 +6,10 @@
 #include <stdarg.h>
 #include <stdlib.h>
 
+#define Pi (3.1415925f)
+
+float CosineInterpolation(float f);
+
 /////////////////////////////
 // SolveQuadratic
 //