From f57229134c0cbb5f7a496f911003af0ea7597c02 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Sat, 7 Nov 2020 15:05:27 +0100
Subject: [PATCH] fixed unstable camera problems (actual_view_transform needs
 iso_inverse not ortho_inverse)

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

diff --git a/hypgraph.cpp b/hypgraph.cpp
index 4ab6fda0..452430fe 100644
--- a/hypgraph.cpp
+++ b/hypgraph.cpp
@@ -1687,7 +1687,7 @@ EX void centerpc(ld aspd) {
     if(sl || vid.eye) T = T * zpush(cgi.SLEV[sl] - cgi.FLOOR + vid.eye);
     }
   #endif
-  hyperpoint H = ortho_inverse(actual_view_transform) * tC0(T);
+  hyperpoint H = iso_inverse(actual_view_transform) * tC0(T);
   ld R = (zero_d(GDIM, H) && !prod) ? 0 : hdist0(H);
   if(R < 1e-9) {
     // either already centered or direction unknown