HGridOptimiser.h

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#ifndef HGRIDOPTIMIZER_H
#define HGRIDOPTIMIZER_H

#include <vector>
#include "MercuryBase.h"

class HGridOptimiser
{
public:
    void initialise(const MercuryBase& problem, unsigned int numberOfCells, int verbosity);

    void initialisePolyFunc(double omega, std::vector<double>& coeff, unsigned int numberOfCells, int verbosity);

    unsigned int radius2Cell(double r);

    unsigned int radius2IntCell(double r);

    double intCell2Min(unsigned int i);

    double intCell2Max(unsigned int i);

    double cell2Min(unsigned int i);

    double cell2Max(unsigned int i);

    double pdfIntCell(double start, double end, unsigned int i, int p);

    double pdfInt(double start, double end, int power);

    double diffPdfInt(double x, int power);

    double expectedCellsIntegralCellNumerator(double start, double end, unsigned int i, int p, double h);

    double diffHExpectedCellsIntegralCellNumerator(double start, double end, unsigned int i, int p, double h);

    double expectedCellsIntegralCellDenominator(double start, double end, unsigned int i);

    double expectedCellsIntegral(double start, double end, int p, double h);

    double diffStartExpectedCellsIntegral(double start, double end, int p, double h);

    double diffEndExpectedCellsIntegral(double start, double end, int p, double h);

    double diffHExpectedCellsIntegral(double start, double end, int p, double h);

    double calculateWork(std::vector<double>& hGridCellSizes, HGridMethod method, int verbosity);

    void calculateDiffWork(std::vector<double>& hGridCellSizes, std::vector<double>& dfdx, HGridMethod method, int verbosity);

    void calcDfDx(std::vector<double>& hGridCellSizes, std::vector<double>& dfdx, HGridMethod method, int verbosity);

    double checkLimit(std::vector<double>& hGridCellSizes, std::vector<double>& dfdx, int verbosity);

    void applyStep(std::vector<double>& hGridCellSizes, std::vector<double>& dfdx, double stepsize, int verbosity);

    double goldenSectionSearch(std::vector<double>& startHGridCellSizes, std::vector<double>& searchDirection, double min, double cur, double max, HGridMethod method, int verbosity);

    void getOptimalDistribution(std::vector<double>& hGridCellSizes, unsigned int numberOfLevels, HGridMethod method, int verbosity);

    void histNumberParticlesPerCell(std::vector<double>& hGridCellSizes);

private:
    unsigned int numCells_;
    double rMin_;
    double rMax_;

    double length_;
    double cellCheckOverContactCheckRatio_;
    unsigned int dimension_;
    
    //Something with cells. Still have to find out which property the double represents.
    //Could be the number of particles in that cell (see initialise), but then 
    //you'd expect an unsigned int and not a double.
    std::vector<double> cellN_;
    std::vector<double> intCellN;
};

#endif