From ad21082654d24b33f8ee294276336ecc19b89444 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 29 Oct 2022 22:34:25 +0100
Subject: [PATCH] check current point

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---
 src/lib.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/lib.rs b/src/lib.rs
index 1a16205..f01a3fa 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -27,6 +27,7 @@ pub fn read_vertices() -> impl Iterator<Item=Shape> {
       current[i] += d;
       current
     }).collect_vec();
+    assert_eq!(current, Point::default());
     shape_abut_zero(&mut points);
     points
   })
-- 
2.30.2