distributionModel.H

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License
    This file is part of OpenFOAM.

    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
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Class
    Foam::distributionModel

Description
    A library of runtime-selectable distribution models.

    Returns a sampled value given the expectation (nu) and variance (sigma^2)

    Current distribution models include:
    - exponential
    - fixedValue
    - general
    - multi-normal
    - normal
    - Rosin-Rammler
    - Mass-based Rosin-Rammler
    - uniform

SourceFiles
    distributionModel.C
    distributionModelNew.C

\*---------------------------------------------------------------------------*/

#ifndef distributionModel_H
#define distributionModel_H

#include "IOdictionary.H"
#include "autoPtr.H"
#include "Random.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

/*---------------------------------------------------------------------------*\
                     Class distributionModel Declaration
\*---------------------------------------------------------------------------*/

class distributionModel
{

protected:

    // Protected data

        //- Coefficients dictionary
        const dictionary distributionModelDict_;

        //- Reference to the random number generator
        Random& rndGen_;


    // Protected Member Functions

        //- Check that the distribution model is valid
        virtual void check() const;

        //- Print information about the distribution
        void info() const;


public:

    //-Runtime type information
    TypeName("distributionModel");


    //- Declare runtime constructor selection table
    declareRunTimeSelectionTable
    (
        autoPtr,
        distributionModel,
        dictionary,
        (
            const dictionary& dict,
            Random& rndGen
        ),
        (dict, rndGen)
    );


    // Constructors

        //- Construct from dictionary
        distributionModel
        (
            const word& name,
            const dictionary& dict,
            Random& rndGen
        );

        //- Construct copy
        distributionModel(const distributionModel& p);

        //- Construct and return a clone
        virtual autoPtr<distributionModel> clone() const = 0;


    //- Selector
    static autoPtr<distributionModel> New
    (
        const dictionary& dict,
        Random& rndGen
    );


    //- Destructor
    virtual ~distributionModel();


    // Member Functions

        //- Sample the distributionModel
        virtual scalar sample() const = 0;

        //- Return the minimum value
        virtual scalar minValue() const = 0;

        //- Return the maximum value
        virtual scalar maxValue() const = 0;

        //- Return the mean value
        virtual scalar meanValue() const = 0;
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //