Key.h

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/*
 *  Copyright (C) 2012 Josh Bialkowski (jbialk@mit.edu)
 *
 *  This file is part of mpblocks.
 *
 *  mpblocks is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  mpblocks 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with mpblocks.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef MPBLOCKS_KD_TREE_EUCLIDEAN_KEY_H_
#define MPBLOCKS_KD_TREE_EUCLIDEAN_KEY_H_



namespace  mpblocks {
namespace   kd_tree {
namespace euclidean {


template <class Traits>
struct Key
{
    typedef typename Traits::Format_t Format_t;
    typedef typename Traits::Node     Node_t;
    typedef Key<Traits>               Key_t;

    Format_t d2;
    Node_t*  n;

    struct Compare
    {
        bool operator()( const Key_t& a, const Key_t& b )
        {
            if( a.d2 < b.d2 )
                return true;
            if( b.d2 < a.d2 )
                return false;
            return (a.n < b.n );
        }
    };
};











} // namespace euclidean
} // namespace kd_tree
} // namespace mpblocks






#endif // SEARCHKEY_H_