From 51e1fe06b32169d7f6722ec2d01a9379b42c1ea2 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Mon, 21 Oct 2019 22:35:04 +0200
Subject: [PATCH] in crystal3, quick relative_matrix for adjacent

---
 crystal.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/crystal.cpp b/crystal.cpp
index 9b762dd1..16cccdc0 100644
--- a/crystal.cpp
+++ b/crystal.cpp
@@ -584,6 +584,7 @@ struct hrmap_crystal : hrmap_standard {
 
   virtual transmatrix relative_matrix(cell *h2, cell *h1, const hyperpoint& hint) override { 
     if(!crystal3()) return hrmap_standard::relative_matrix(h2, h1, hint);
+    for(int i=0; i<S7; i++) if(h2 == h1->move(i)) return adj(h1->master, i);
     if(gmatrix0.count(h2) && gmatrix0.count(h1))
       return inverse(gmatrix0[h1]) * gmatrix0[h2];
     return xpush(999);