From 35a433041208de7a55e053a306e91d6e68452f29 Mon Sep 17 00:00:00 2001
From: ? <zeno@attnam.com>
Date: Wed, 27 Feb 2019 14:13:04 +0100
Subject: [PATCH] 3d:: 1/2/3 perspectives in noshmup

---
 graph.cpp    | 1 +
 hypgraph.cpp | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/graph.cpp b/graph.cpp
index b66ec456..4b409dbd 100644
--- a/graph.cpp
+++ b/graph.cpp
@@ -5665,6 +5665,7 @@ purehookset hooks_drawmap;
 
 transmatrix cview() {
   sphereflip = Id;
+  if(DIM == 3 && !shmup::on && vid.yshift) return cpush(2, vid.yshift) * View;
   if(DIM == 3) return View;
   if(sphereflipped()) sphereflip[DIM][DIM] = -1;
   return ypush(vid.yshift) * sphereflip * View;
diff --git a/hypgraph.cpp b/hypgraph.cpp
index 2ff0b1ac..4648fcd0 100644
--- a/hypgraph.cpp
+++ b/hypgraph.cpp
@@ -1059,7 +1059,9 @@ void centerpc(ld aspd) {
   
   ors::unrotate(cwtV); ors::unrotate(View);
   
-  hyperpoint H = ypush(-vid.yshift) * sphereflip * tC0(cwtV);
+  hyperpoint H = tC0(cwtV);
+  if(DIM == 2) H = ypush(-vid.yshift) * sphereflip * H;
+  if(DIM == 3 && !shmup::on && vid.yshift) H = cpush(2, -vid.yshift) * H;
   ld R = zero_d(H, DIM) ? 0 : hdist0(H);
   if(R < 1e-9) {
     // either already centered or direction unknown