#ifndef ATTRACTORKERNEL_HPP
#define ATTRACTORKERNEL_HPP

#include "stfu/stf.hpp"

class AttractorKernel {
private:

	void allocate();
	void dealloc();

protected:

	// biggest type first, this will reduce sizeof(AttractorKernel)
	// size is now 40 (when the unsigned int are in front, it was 48)
	double * parameters;
	double * vectorNew;
	double * vectorOld;

	unsigned int numberOfParameters;
	unsigned int dimension;

	// stuff used by subclasses
	AttractorKernel(const unsigned int dimension, const unsigned int numberOfParameters);

public:

	// parameters are stored in a array of doubles
	double & operator[](const unsigned int index);
	double const & operator[](const unsigned int index) const;
	unsigned int getNumberOfParameters() const;

	// iterate his formula, implemented by subclasses
	virtual void operator()() = 0;

	// getter functions for teh resulta (can't be used as setters)
	double const * vector() const;
	double const * previousVector() const;
	unsigned int getDimension() const;

	// dtor, should be virtual for subclasses to be deleted
	virtual ~AttractorKernel();

	// factory function
	static AttractorKernel * createAttractorKernel(stfu::node& attractorKernel);

};


#endif // ATTRACTORKERNEL_HPP