'circles' are now drawn on all copies in quotient geometries

basegraph.cpp

@@ -49,6 +49,8 @@ struct display_data {
   void set_all(int ed);
   /** Which copy of the player cell? */
   transmatrix which_copy;
+  /** On-screen coordinates for all the visible cells. */
+  unordered_map<cell*, vector<transmatrix>> all_drawn_copies;
   };
 
 #define View (::hr::current_display->view_matrix)