/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Copyright (C) 2012-2026 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
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
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.

    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.

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

#include "meshToMesh.H"

// * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * * //

inline const Foam::cellsToCells& Foam::meshToMesh::cellsInterpolation() const
{
    return cellsInterpolation_();
}


inline const Foam::cellsToCellsExtrapolation&
Foam::meshToMesh::srcCellsExtrapolation() const
{
    if (!srcCellsExtrapolation_.valid())
    {
        srcCellsExtrapolation_.reset
        (
            cellsToCellsExtrapolation::New(cellsExtrapolationType_).ptr()
        );
        srcCellsExtrapolation_->update
        (
            srcMesh_,
            cellsInterpolation_->srcCoupled()
        );
    }

    return srcCellsExtrapolation_();
}


inline const Foam::cellsToCellsExtrapolation&
Foam::meshToMesh::tgtCellsExtrapolation() const
{
    if (!tgtCellsExtrapolation_.valid())
    {
        tgtCellsExtrapolation_.reset
        (
            cellsToCellsExtrapolation::New(cellsExtrapolationType_).ptr()
        );
        tgtCellsExtrapolation_->update
        (
            tgtMesh_,
            cellsInterpolation_->tgtCoupled()
        );
    }

    return tgtCellsExtrapolation_();
}


inline const Foam::List<Foam::labelPair>& Foam::meshToMesh::patchIndices() const
{
    return patchIndices_;
}


inline const Foam::patchToPatch& Foam::meshToMesh::patchInterpolation
(
    const label i
) const
{
    return patchInterpolations_[i];
}


inline const Foam::patchToPatchExtrapolation&
Foam::meshToMesh::srcPatchExtrapolation(const label i) const
{
    if (!srcPatchExtrapolations_.set(i))
    {
        const label srcPatchi = patchIndices_[i].first();
        const polyPatch& srcPp = srcMesh_.boundary()[srcPatchi];

        srcPatchExtrapolations_.set
        (
            i,
            patchToPatchExtrapolation::New(patchExtrapolationType_).ptr()
        );
        srcPatchExtrapolations_[i].update
        (
            srcPp,
            patchInterpolations_[i].srcCoupled()
        );
    }

    return srcPatchExtrapolations_[i];
}


inline const Foam::patchToPatchExtrapolation&
Foam::meshToMesh::tgtPatchExtrapolation(const label i) const
{
    if (!tgtPatchExtrapolations_.set(i))
    {
        const label tgtPatchi = patchIndices_[i].first();
        const polyPatch& tgtPp = tgtMesh_.boundary()[tgtPatchi];

        tgtPatchExtrapolations_.set
        (
            i,
            patchToPatchExtrapolation::New(patchExtrapolationType_).ptr()
        );
        tgtPatchExtrapolations_[i].update
        (
            tgtPp,
            patchInterpolations_[i].tgtCoupled()
        );
    }

    return tgtPatchExtrapolations_[i];
}


// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //

inline const Foam::polyMesh& Foam::meshToMesh::srcMesh() const
{
    return srcMesh_;
}


inline const Foam::polyMesh& Foam::meshToMesh::tgtMesh() const
{
    return tgtMesh_;
}


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