From bffe8b0dfd1beff41da5dc883e8093d7a7826ffa Mon Sep 17 00:00:00 2001
From: cahon <cahon>
Date: Thu, 25 Apr 2002 14:08:26 +0000
Subject: [PATCH] A toric topology for cellular E.A.

---
 eo/src/eoToricCellularEasyEA.h | 88 ++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 eo/src/eoToricCellularEasyEA.h

diff --git a/eo/src/eoToricCellularEasyEA.h b/eo/src/eoToricCellularEasyEA.h
new file mode 100644
index 00000000..bd4149ab
--- /dev/null
+++ b/eo/src/eoToricCellularEasyEA.h
@@ -0,0 +1,88 @@
+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+// "eoToricCellularEasyEA.h"
+
+// (c) OPAC Team, LIFL, 2002
+
+/* This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+   
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+   
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+   
+   Contact: cahon@lifl.fr
+*/
+
+#ifndef eoToricCellularEasyEA_h
+#define eoToricCellularEasyEA_h
+
+#include <eoCellularEasyEA.h>
+
+#include <math.h>
+
+template <class EOT> class eoToricCellularEasyEA : public eoCellularEasyEA <EOT> {
+  
+public :
+  
+  eoToricCellularEasyEA (eoContinue <EOT> & _cont,
+			 eoEvalFunc <EOT> & _eval,
+			 eoSelectOne <EOT> & _sel_neigh,
+			 eoBinOp <EOT> & _cross,
+			 eoMonOp <EOT> & _mut,
+			 eoSelectOne <EOT> & _sel_repl
+			 ) :
+    eoCellularEasyEA <EOT> (_cont,
+			    _eval,
+			    _sel_neigh,
+			    _cross,
+			    _mut,
+			    _sel_repl) {
+    
+  }
+  
+  eoToricCellularEasyEA (eoContinue <EOT> & _cont,
+			 eoEvalFunc <EOT> & _eval,
+			 eoSelectOne <EOT> & _sel_neigh,
+			 eoQuadOp <EOT> & _cross,
+			 eoMonOp <EOT> & _mut,
+			 eoSelectOne <EOT> & _sel_child,
+			 eoSelectOne <EOT> & _sel_repl
+			 ) :
+    eoCellularEasyEA <EOT> (_cont,
+			    _eval,
+			    _sel_neigh,
+			    _cross,
+			    _mut,
+			    _sel_child,
+			    _sel_repl) {
+    
+  }
+
+  // Take care :-). The size of the population must be a square number ! (9, 16, ...)
+
+  virtual eoPop <EOT> neighbours (const eoPop <EOT> & pop, int rank) {
+    
+    int dim2 = pop.size () ;
+    int dim = (int) sqrt (dim2) ;
+    int j = rank ;
+
+    eoPop <EOT> neigh ;
+    neigh.push_back (pop [j < dim ? dim2 - dim + j : j - dim]) ;
+    neigh.push_back (pop [(j + dim) % dim2]) ;
+    neigh.push_back (pop [(j + 1) % dim != 0 ? j + 1 : j + 1 - dim]) ;
+    neigh.push_back (pop [j % dim != 0 ? j - 1 : j + dim - 1]) ;
+   
+    return neigh ;
+  } 
+  
+} ;
+
+#endif