Metric.h

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//
// Copyright (c) 2009, Markus Rickert
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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#ifndef RL_PLAN_METRIC_H
#define RL_PLAN_METRIC_H
 
#include <rl/math/Real.h>
#include <rl/math/Vector.h>
 
namespace rl
{
    namespace plan
    {
        class Model;
        
        class Metric
        {
        public:
            typedef ::rl::math::Real Distance;
            
            typedef ::std::size_t Size;
            
            struct Value
            {
                typedef const ::rl::math::Real* const_iterator;
                
                Value();
                
                Value(const ::rl::math::Vector* first, void* second);
                
                const ::rl::math::Real* begin() const;
                
                const ::rl::math::Real* end() const;
                
                ::std::size_t size() const;
                
                const ::rl::math::Vector* first;
                
                void* second;
            };
            
            Metric(Model* model, const bool& transformed);
            
            virtual ~Metric();
            
            Distance operator()(const Value& lhs, const Value& rhs) const;
            
            Distance operator()(const Distance& lhs, const Distance& rhs, const ::std::size_t& index) const;
            
        protected:
            
        private:
            Model* model;
            
            bool transformed;
        };
    }
}
 
#endif // RL_PLAN_METRIC_H