From f68d8371a11b002f5494c7294551a8f955e69c0c Mon Sep 17 00:00:00 2001
From: Kai Stevenson <kai@kaistevenson.com>
Date: Sun, 16 Aug 2026 19:27:17 -0700
Subject: add test, fix scaling

---
 src/sim/cell/materials/mod.rs | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/sim/cell')

diff --git a/src/sim/cell/materials/mod.rs b/src/sim/cell/materials/mod.rs
index a55ed51..0d19696 100644
--- a/src/sim/cell/materials/mod.rs
+++ b/src/sim/cell/materials/mod.rs
@@ -85,4 +85,8 @@ impl MaterialId {
     pub fn def(self) -> &'static MaterialDef {
         &MATERIALS[self as usize]
     }
+
+    pub fn from_index(idx: u8) -> MaterialId {
+        MaterialId::ALL[idx as usize]
+    }
 }
-- 
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