From c24d1e52b3f173ba5f4cc04f5a6a449a011a60c7 Mon Sep 17 00:00:00 2001
From: Julian T <julian@jtle.dk>
Date: Sun, 7 Feb 2021 17:52:30 +0100
Subject: Add reflecting material

---
 src/lib.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/lib.rs')

diff --git a/src/lib.rs b/src/lib.rs
index a0af705..1593471 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -6,7 +6,7 @@ pub mod trace;
 pub mod sample;
 pub mod material;
 
-use std::ops::{Add, Sub, Mul, DivAssign, Neg};
+use std::ops::{Add, Sub, Mul, DivAssign, AddAssign, Neg};
 use std::cmp;
 use std::fmt;
 use std::f64::consts::PI;
@@ -22,6 +22,7 @@ pub trait Number:
     Mul<Output = Self> +
     Neg<Output = Self> + 
     DivAssign +
+    AddAssign +
     fmt::Display
 {}
 
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