derivator.h

#ifndef DERIVATOR_H
#define DERIVATOR_H

#include "afltypes.h"

namespace afl
{
    class Field;
    class Derivator
    {

        public:
            virtual ~Derivator(  );
            virtual Derivative derivative( const Point& x ) const = 0;

            virtual void toXML( std::ostream& doc ) const = 0;

            virtual Derivator* clone(  ) = 0;
 
            const Point& getDeltas(  ) const { return _deltas; }

            virtual const std::string& getMethod(  ) const = 0;

            void setParentField( const Field* parent );


        protected:
            Derivator( const Field* field, const Parameters& params );

        protected:
            const Field* _field;

            Point _deltas;

            const ddf::PropertySet* _pset;
    };

};

#endif // DERIVATOR_H

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