From a0524a09fa0ea300e96bff2055b1880b2a253b0e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hugo=20H=C3=B6rnquist?= <hugo@hornquist.se>
Date: Thu, 13 Jun 2019 15:36:21 +0200
Subject: [PATCH] Add comment.

---
 main.scm | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/main.scm b/main.scm
index 353ef10..3e6c1e3 100755
--- a/main.scm
+++ b/main.scm
@@ -132,6 +132,9 @@
           (decimals x))
        1))
 
+;; distance from x wall, horizontal wall, wall paralell with the x axis
+;; returns how far you would have to travel in direction a before you
+;; hit a wall.
 (define (y-from-edge y a)
   "distance-from-x-wall"
   (mod (* (sgn (sin a))
-- 
2.24.1