From b0b754a37d8106a48a3cdcbac38b7770e3d6ff68 Mon Sep 17 00:00:00 2001
From: Zithia Satazaki <qmanxt@gmail.com>
Date: Mon, 28 Mar 2022 20:06:21 -0400
Subject: [PATCH] AudioFrame::lerp

---
 xybrid/data/audioframe.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xybrid/data/audioframe.h b/xybrid/data/audioframe.h
index 06aa4c9..81df176 100644
--- a/xybrid/data/audioframe.h
+++ b/xybrid/data/audioframe.h
@@ -50,6 +50,8 @@ namespace Xybrid::Data {
         inline AudioFrame flip() { return {r, l}; }
         inline AudioFrame clamp(double m = 1.0) { return { std::clamp(l, -m, m), std::clamp(r, -m, m) }; }
 
+        static inline AudioFrame lerp(AudioFrame a, AudioFrame b, double r) { return b * r + a * (1.0 - r); }
+
         static AudioFrame gainBalanceMult(double gain, double balance = 0.0);
         inline AudioFrame gainBalance(double gain, double balance = 0.0) const { return *this*gainBalanceMult(gain, balance); }
     };