From 59834f98f24bf424e310088a7330df7fd2586a2e Mon Sep 17 00:00:00 2001
From: ubq323 <ubq323@ubq323.website>
Date: Thu, 4 Jan 2024 21:24:23 +0000
Subject: add link

---
 main.lua | 1 +
 1 file changed, 1 insertion(+)

(limited to 'main.lua')

diff --git a/main.lua b/main.lua
index ecac412..ff212f5 100644
--- a/main.lua
+++ b/main.lua
@@ -44,6 +44,7 @@ function love.wheelmoved(x,y)
 end
 
 local function catenary0(x1,y1,x2,y2)
+	-- https://math.stackexchange.com/a/3557768
 	y1 = -y1
 	y2 = -y2
 	local dx = x2-x1
-- 
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