morphingBoxConstraint.H

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    Copyright (C) 2021-2023 PCOpt/NTUA
    Copyright (C) 2021-2023 FOSS GP
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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
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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    for more details.
 
    You should have received a copy of the GNU General Public License
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Class
    Foam::morphingBoxConstraint
 
Description
    Abstract base class for defining constraints for the control points of
    volumetric B-Splines morphing boxes
 
SourceFiles
    morphingBoxConstraint.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef morphingBoxConstraint_H
#define morphingBoxConstraint_H
 
#include "volBSplinesBase.H"
#include "runTimeSelectionTables.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward declaration
class volumetricBSplinesDesignVariables;
 
/*---------------------------------------------------------------------------*\
                    Class morphingBoxConstraint Declaration
\*---------------------------------------------------------------------------*/
 
class morphingBoxConstraint
{
protected:
 
    // Protected data
 
        //- Mesh reference
        const fvMesh& mesh_;
 
        //- Volumetric B-Splines variables dict
        const dictionary dict_;
 
        //- Reference to underlaying volumetric B-Splines morpher
        volumetricBSplinesDesignVariables& designVariables_;
 
        //- Easy access to the volBSplinesBase resting in the designVariables_
        volBSplinesBase& volBSplinesBase_;
 
        //- Initial CPs stored in scalarField
        scalarField initialCPs_;
 
        //- Initialise the design variables
        bool initialiseVars_;
 
        //- Folder holding the twist sensitivities
        fileName derivativesFolder_;
 
 
    // Protected Member Functions
 
        //- Compute sensitivities wrt the design variables (chain rule)
        void virtual computeDVsSensitivities
        (
            scalarField& dvSens,
            const scalarField& cpSens
        ) = 0;
 
        //- Write sensitivities w.r.t. the design variables
        void virtual writeDVSensitivities
        (
            const scalarField& sens,
            const word& name
        );
 
 
private:
 
    // Private Member Functions
 
        //- Disallow default bitwise copy construct
        morphingBoxConstraint(const morphingBoxConstraint&) = delete;
 
        //- Disallow default bitwise assignment
        void operator=(const morphingBoxConstraint&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("morphingBoxConstraint");
 
 
    // Declare run-time constructor selection table
 
        declareRunTimeSelectionTable
        (
            autoPtr,
            morphingBoxConstraint,
            dictionary,
            (
                const fvMesh& mesh,
                const dictionary& dict,
                volumetricBSplinesDesignVariables& designVariables
            ),
            (mesh, dict, designVariables)
        );
 
 
    // Constructors
 
        //- Construct from components
        morphingBoxConstraint
        (
            const fvMesh& mesh,
            const dictionary& dict,
            volumetricBSplinesDesignVariables& designVariables
        );
 
 
    // Selectors
 
        //- Construct and return the selected morphingBoxConstraint
        static autoPtr<morphingBoxConstraint> New
        (
            const fvMesh& mesh,
            const dictionary& dict,
            volumetricBSplinesDesignVariables& designVariables
        );
 
 
    //- Destructor
    virtual ~morphingBoxConstraint() = default;
 
 
    // Member Functions
 
        //- Compute the active design variables based on the IDs of the
        //- active control point coordinates
        virtual labelList computeActiveDesignVariables
        (
            const labelList& activeCPCoors
        ) = 0;
 
        //- Transform bounds from control points to design variables
        //  WIP
        virtual void computeBounds
        (
            autoPtr<scalarField>& lowerBounds,
            autoPtr<scalarField>& upperBounds
        );
 
        //- Update the bounds of the design variables
        //  WIP
        virtual void updateBounds
        (
            autoPtr<scalarField>& lowerBounds,
            autoPtr<scalarField>& upperBounds
        );
 
        //- Convert design variables to control points, stored in a scalarField
        virtual tmp<scalarField> designVariablesToControlPoints
        (
            const scalarField& designVariables
        ) = 0;
 
        //- Return the design variables corresponding to the given control
        //- points
        virtual tmp<scalarField> controlPointsToDesignVariables
        (
            const scalarField& cps
        ) = 0;
 
        //- Convert the correction of the design variables to the correction of
        //- the control points
        virtual tmp<scalarField> correctionCPs
        (
            const scalarField& correction
        ) = 0;
 
        //- Chain rule from control points to design variables
        virtual tmp<scalarField> postProcessSens
        (
            const scalarField& controlPointSens,
            const word& adjointSolverName
        );
 
        //- Compute eta if not set in the first step
        virtual scalar computeEta
        (
            scalarField& correction,
            const scalar maxInitChange
        );
 
        //- Initialise the design variables?
        inline bool initialiseVars() const
        {
            return initialiseVars_;
        }
 
        //- Append useful information to the design variables IOdictionary
        virtual bool writeData(Ostream& os) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //