From f02073a35fc9fb5a35a565338748d168303f8c0f Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Sat, 7 Jan 2023 18:56:12 +0100
Subject: [PATCH] fixed fixed_YZ in euc_in_sl2

---
 hypgraph.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hypgraph.cpp b/hypgraph.cpp
index ff5eb314..978cac60 100644
--- a/hypgraph.cpp
+++ b/hypgraph.cpp
@@ -1910,6 +1910,10 @@ EX hyperpoint vertical_vector() {
     }
   if(embedded_plane && geom3::same_in_same())
     return get_view_orientation() * lztangent(vid.wall_height);
+  if(geom3::euc_in_sl2()) {
+    transmatrix Rot = View * map_relative_push(inverse(View) * C0);
+    return Rot * lztangent(vid.wall_height);
+    }
   if(embedded_plane && vid.fixed_yz && nonisotropic) {
     return NLP * lztangent(vid.wall_height);
     }