From 75ecbe4e858ff6a79f92fc1f8ef3146d9f286bdb Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Mon, 10 Mar 2025 22:13:10 +0100
Subject: [PATCH] fixed a bug with rendering 45-degree-rotated Klein bottles

---
 euclid.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/euclid.cpp b/euclid.cpp
index f33ea01e..a676969b 100644
--- a/euclid.cpp
+++ b/euclid.cpp
@@ -799,7 +799,7 @@ EX namespace euc {
         if(dsx >= dsc) coo = coo - twisted_vec;
         else if (dsx < 0) coo = coo + twisted_vec;
         else break;
-        M = M * spintox(h) * MirrorY * rspintox(h);
+        M = M * rspintox(h) * MirrorY * spintox(h);
         auto s = ort * dscalar(d0, ort) * 2;
         auto v = dscalar(ort, ort);
         s.first /= v;