Allows proportional combinations of eoInit objects

Similar to eoPropostionalCombinedXXXOp

eo/src/eoCombinedInit.h

@@ -0,0 +1,85 @@
+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+//-----------------------------------------------------------------------------
+// eoCombinedInit.h
+// (c) Maarten Keijzer, GeNeura Team, Marc Schoenauer 2004
+/* 
+    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: Marc.Schoenauer@inria.fr
+ */
+//-----------------------------------------------------------------------------
+
+#ifndef _eoCombinedInit_h
+#define _eoCombinedInit_h
+
+#include <eoInit.h>
+
+/** 
+    Combined INIT: a proportional recombination of eoInit
+*/
+
+template< class EOT>
+class eoCombinedInit: public eoInit<EOT> {
+public:
+
+  /// Ctor, make sure that at least on continuator is present
+  eoCombinedInit( eoInit<EOT>& _init, double _rate)
+    : eoInit<EOT> ()
+  {
+    initializers.push_back(&_init);
+    rates.push_back(_rate);
+  }
+
+  void add(eoInit<EOT> & _init, double _rate, bool _verbose=false)
+  {
+    initializers.push_back(&_init);
+    rates.push_back(_rate);
+    // compute the relative rates in percent - to warn the user!
+    if (_verbose)
+      printOn(std::cout);
+  }
+
+  // outputs the operators and percentages
+  virtual void printOn(std::ostream & _os)
+  {
+    double total = 0;
+    unsigned i;
+    for (i=0; i<initializers.size(); i++)
+      total += rates[i];
+    _os << "In " << className() << "\n" ;
+    for (i=0; i<initializers.size(); i++)
+      _os << initializers[i]->className() << " with rate " << 100*rates[i]/total << " %\n";
+  }
+
+  /** Performs the init: chooses among all initializers
+   * using some roulette wheel choice
+   */
+  virtual void operator() ( EOT & _eo )
+  {
+    unsigned what = rng.roulette_wheel(rates); // choose one op
+    (*initializers[what])(_eo);		   // apply it
+    return;
+  }
+
+  virtual std::string className(void) const { return "eoCombinedInit"; }
+
+private:
+std::vector<eoInit<EOT>*> initializers;
+std::vector<double> rates;
+};
+
+#endif
+