From d9306b57d6fe52fb509525173b6688e5be970eb2 Mon Sep 17 00:00:00 2001
From: yuni <hut@hut.pm>
Date: Fri, 29 Nov 2024 18:12:24 +0100
Subject: [PATCH] add comment

---
 src/visual.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/visual.rs b/src/visual.rs
index 34a786a..5f02eee 100644
--- a/src/visual.rs
+++ b/src/visual.rs
@@ -381,6 +381,7 @@ fn update_atmosphere(
             } else if x > 300000.0 {
                 0.0
             } else {
+                // quadratic regression with [(-2e4, 1.0), (1e5, 0.9), (3e5, 1.0)]
                 (-(1.14583e-11) * x * x + (8.33333e-8) * x + 1.00625) as f32
             };
             if let Some(material) = materials.get_mut(material_handle) {