From 6950e0e1bac8f3b67d404906ca81acf53460d471 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Fri, 3 Feb 2023 16:11:13 +0100
Subject: [PATCH] embeddings:: fixed vertical_vector

---
 hypgraph.cpp | 25 ++++++-------------------
 1 file changed, 6 insertions(+), 19 deletions(-)

diff --git a/hypgraph.cpp b/hypgraph.cpp
index f880c8f4..8275d8ca 100644
--- a/hypgraph.cpp
+++ b/hypgraph.cpp
@@ -1896,30 +1896,17 @@ EX bool keep_vertical() {
 
 EX hyperpoint vertical_vector() {
   auto& ds = downseek;
-  if(msphere && !sphere && !gproduct && vid.fixed_yz) {
-    hyperpoint h = get_view_orientation() * C0;
-    if(vid.wall_height > 0) h = -h;
-    return h;
-    }
-  if(meuclid && hyperbolic && vid.fixed_yz) {
-    hyperpoint h = iso_inverse(View) * C0;
-    return View * (orthogonal_move(h, vid.wall_height) - h);
-    }
-  if(gproduct && vid.fixed_yz) {
-    return get_view_orientation() * lztangent(embedded_plane ? vid.wall_height : 1);
-    }
-  if(cgi.emb->is_same_in_same())
-    return get_view_orientation() * lztangent(vid.wall_height);
-  if(cgi.emb->is_euc_in_sl2() || cgi.emb->is_euc_in_sph()) {
+  if(embedded_plane && vid.fixed_yz) {
     transmatrix Rot = View * cgi.emb->map_relative_push(inverse(View) * C0);
+    if(gproduct) Rot = NLP * Rot;
     return Rot * lztangent(vid.wall_height);
     }
-  if(embedded_plane && vid.fixed_yz && nonisotropic) {
-    return NLP * lztangent(vid.wall_height);
+  if(gproduct && vid.fixed_yz) {
+    return get_view_orientation() * lztangent(1);
     }
-  else if(ds.qty && gproduct)
+  if(ds.qty && gproduct)
     return get_view_orientation() * product::inverse_exp(ds.point);
-  else if(ds.qty)
+  if(ds.qty)
     return ds.point;
   return C0;
   }