From e86e6267ec916ed371fd7745189db6881b6d2529 Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Sat, 13 Aug 2022 22:42:59 +0200
Subject: [PATCH] the implementation in reg3 can now be used for the cube
 tiling

---
 cell.cpp     | 2 ++
 config.cpp   | 1 +
 euclid.cpp   | 1 +
 geom-exp.cpp | 4 ++--
 reg3.cpp     | 9 ++++++++-
 5 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/cell.cpp b/cell.cpp
index 831ece6c..707390fc 100644
--- a/cell.cpp
+++ b/cell.cpp
@@ -1308,6 +1308,8 @@ EX int celldistance(cell *c1, cell *c2) {
     /* TODO */
     }
 
+  if(euclid) return clueless_celldistance(c1, c2);
+
   return hyperbolic_celldistance(c1, c2);
   }
 
diff --git a/config.cpp b/config.cpp
index e265d416..72d8524d 100644
--- a/config.cpp
+++ b/config.cpp
@@ -648,6 +648,7 @@ EX void initConfig() {
 
   param_b(no_find_player, "no_find_player");
   param_b(game_keys_scroll, "game_keys_scroll");
+  param_b(reg3::cubes_reg3, "cubes_reg3");
 
   param_b(arb::apeirogon_consistent_coloring, "apeirogon_consistent_coloring", true)
   -> editable("apeirogon_consistent_coloring", 'c');
diff --git a/euclid.cpp b/euclid.cpp
index e10fe406..aa1ac010 100644
--- a/euclid.cpp
+++ b/euclid.cpp
@@ -1356,6 +1356,7 @@ EX void generate() {
  */
 EX bool in() { 
   if(fake::in()) return FPIU(in()); 
+  if(geometry == gCubeTiling && (reg3::cubes_reg3 || !PURE)) return false;
   return euclid && standard_tiling(); 
   }
 
diff --git a/geom-exp.cpp b/geom-exp.cpp
index 5a625c5a..4fceddc0 100644
--- a/geom-exp.cpp
+++ b/geom-exp.cpp
@@ -650,7 +650,7 @@ void action_change_variation() {
   else if(arcm::in()) arcm::next_variation();
   #endif
   #if MAXMDIM >= 4
-  else if(reg3::in()) reg3::configure_variation();
+  else if(reg3::in() || geometry == gCubeTiling) reg3::configure_variation();
   #endif
   else if(euc::in(2,4) || !CAP_GP) dialog::do_if_confirmed([] {
     set_variation(PURE ? eVariation::bitruncated : eVariation::pure);
@@ -1015,7 +1015,7 @@ EX void showEuclideanMenu() {
   else if(nil) {
     menuitem_nilwidth('v');
     }
-  else if((WDIM == 3 || kite::in() || arb::in()) && !reg3::in()) dialog::addBreak(100);
+  else if((WDIM == 3 || kite::in() || arb::in()) && !reg3::in() && geometry != gCubeTiling) dialog::addBreak(100);
   else 
     menuitem_change_variation('v');
 
diff --git a/reg3.cpp b/reg3.cpp
index 183089c0..bb2de114 100644
--- a/reg3.cpp
+++ b/reg3.cpp
@@ -116,9 +116,12 @@ EX namespace reg3 {
 
   EX bool ultra_mirror_in() { return (cgflags & qULTRA) && ultra_mirror_on; }
   
+  EX bool cubes_reg3;
+
   EX bool in() {
     if(fake::in()) return FPIU(in());
-    return WDIM == 3 && !euclid && !bt::in() && !nonisotropic && !hybri && !kite::in();
+    if(geometry == gCubeTiling && (cubes_reg3 || !PURE)) return true;
+    return WDIM == 3 && /* !euclid && */ !bt::in() && !nonisotropic && !hybri && !kite::in();
     }
 
   EX void compute_ultra() {
@@ -266,6 +269,8 @@ EX namespace reg3 {
     
     /* precise ideal vertex */
     if(klein_scale > 1-1e-5 && klein_scale < 1+1e-5) klein_scale = 1;
+
+    if(euclid) klein_scale = sqrt(3)/2;
     
     /* actual vertex */
     hyperpoint v2 = C0 + klein_scale * h012;
@@ -1319,6 +1324,8 @@ EX namespace reg3 {
     else if(hyperbolic) {
       return new hrmap_field3(&fp);
       }
+    else if(geometry == gCubeTiling)
+      return new seifert_weber::hrmap_singlecell(0);
     #endif
     return nullptr;
     }