merge ParadisEO-MOEO v-1.0

git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@400 331e1502-861f-0410-8da2-ba01fb791d7f

trunk/paradiseo-moeo/src/comparator/moeoOneObjectiveComparator.h

@@ -0,0 +1,57 @@
+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+//-----------------------------------------------------------------------------
+// moeoOneObjectiveComparator.h
+// (c) OPAC Team (LIFL), Dolphin Project (INRIA), 2007
+/*
+    This library...
+
+    Contact: paradiseo-help@lists.gforge.inria.fr, http://paradiseo.gforge.inria.fr
+ */
+//-----------------------------------------------------------------------------
+
+#ifndef MOEOONEOBJECTIVECOMPARATOR_H_
+#define MOEOONEOBJECTIVECOMPARATOR_H_
+
+#include <comparator/moeoComparator.h>
+
+/**
+ * Functor allowing to compare two solutions according to one objective.
+ */
+template < class MOEOT >
+class moeoOneObjectiveComparator : public moeoComparator < MOEOT >
+{
+public:
+
+    /**
+     * Ctor.
+     * @param _obj the index of objective
+     */
+    moeoOneObjectiveComparator(unsigned int _obj) : obj(_obj)
+    {
+        if (obj > MOEOT::ObjectiveVector::nObjectives())
+        {
+            throw std::runtime_error("Problem with the index of objective in moeoOneObjectiveComparator");
+        }
+    }
+
+
+    /**
+     * Returns true if _moeo1 < _moeo2 on the obj objective
+     * @param _moeo1 the first solution
+     * @param _moeo2 the second solution
+     */
+    const bool operator()(const MOEOT & _moeo1, const MOEOT & _moeo2)
+    {
+        return _moeo1.objectiveVector()[obj] < _moeo2.objectiveVector()[obj];
+    }
+
+
+private:
+
+    /** the index of objective */
+    unsigned int obj;
+
+};
+
+#endif /*MOEOONEOBJECTIVECOMPARATOR_H_*/