/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2011-2017 OpenFOAM Foundation
    Copyright (C) 2019 OpenCFD Ltd.
-------------------------------------------------------------------------------
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 "mapPolyMesh.H"
#include "polyMesh.H"

// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

Foam::mapPolyMesh::mapPolyMesh(const polyMesh& mesh)
:
    mesh_(mesh),
    nOldPoints_(mesh.nPoints()),
    nOldFaces_(mesh.nFaces()),
    nOldCells_(mesh.nCells()),
    pointMap_(identity(mesh.nPoints())),
    pointsFromPointsMap_(),
    faceMap_(identity(mesh.nFaces())),
    facesFromPointsMap_(),
    facesFromEdgesMap_(),
    facesFromFacesMap_(),
    cellMap_(identity(mesh.nCells())),
    cellsFromPointsMap_(),
    cellsFromEdgesMap_(),
    cellsFromFacesMap_(),
    cellsFromCellsMap_(),
    reversePointMap_(identity(mesh.nPoints())),
    reverseFaceMap_(identity(mesh.nFaces())),
    reverseCellMap_(identity(mesh.nCells())),
    flipFaceFlux_(),
    patchPointMap_(mesh.boundaryMesh().size()),
    pointZoneMap_(mesh.pointZones().size()),
    faceZonePointMap_(mesh.faceZones().size()),
    faceZoneFaceMap_(mesh.faceZones().size()),
    cellZoneMap_(mesh.cellZones().size()),
    preMotionPoints_(mesh.points()),
    oldPatchSizes_(mesh.boundaryMesh().patchSizes()),
    oldPatchStarts_(mesh.boundaryMesh().patchStarts()),
    oldPatchNMeshPoints_(mesh.boundaryMesh().size()),
    oldCellVolumesPtr_()
{
    // Identity map for patch points
    forAll(patchPointMap_, patchi)
    {
        const label nPoints = mesh.boundaryMesh()[patchi].meshPoints().size();
        oldPatchNMeshPoints_[patchi] = nPoints;
        patchPointMap_[patchi] = identity(nPoints);
    }

    // Identity maps for zones

    forAll(pointZoneMap_, zonei)
    {
        pointZoneMap_[zonei] = identity(mesh.pointZones()[zonei].size());
    }

    forAll(faceZonePointMap_, zonei)
    {
        faceZonePointMap_[zonei] =
            identity(mesh.faceZones()[zonei]().meshPoints().size());
    }

    forAll(faceZoneFaceMap_, zonei)
    {
        pointZoneMap_[zonei] = identity(mesh.faceZones()[zonei].size());
    }

    forAll(cellZoneMap_, zonei)
    {
        cellZoneMap_[zonei] = identity(mesh.cellZones()[zonei].size());
    }
}


Foam::mapPolyMesh::mapPolyMesh
(
    const polyMesh& mesh,
    const label nOldPoints,
    const label nOldFaces,
    const label nOldCells,
    const labelList& pointMap,
    const List<objectMap>& pointsFromPoints,
    const labelList& faceMap,
    const List<objectMap>& facesFromPoints,
    const List<objectMap>& facesFromEdges,
    const List<objectMap>& facesFromFaces,
    const labelList& cellMap,
    const List<objectMap>& cellsFromPoints,
    const List<objectMap>& cellsFromEdges,
    const List<objectMap>& cellsFromFaces,
    const List<objectMap>& cellsFromCells,
    const labelList& reversePointMap,
    const labelList& reverseFaceMap,
    const labelList& reverseCellMap,
    const labelHashSet& flipFaceFlux,
    const labelListList& patchPointMap,
    const labelListList& pointZoneMap,
    const labelListList& faceZonePointMap,
    const labelListList& faceZoneFaceMap,
    const labelListList& cellZoneMap,
    const pointField& preMotionPoints,
    const labelList& oldPatchStarts,
    const labelList& oldPatchNMeshPoints,
    const autoPtr<scalarField>& oldCellVolumesPtr
)
:
    mesh_(mesh),
    nOldPoints_(nOldPoints),
    nOldFaces_(nOldFaces),
    nOldCells_(nOldCells),
    pointMap_(pointMap),
    pointsFromPointsMap_(pointsFromPoints),
    faceMap_(faceMap),
    facesFromPointsMap_(facesFromPoints),
    facesFromEdgesMap_(facesFromEdges),
    facesFromFacesMap_(facesFromFaces),
    cellMap_(cellMap),
    cellsFromPointsMap_(cellsFromPoints),
    cellsFromEdgesMap_(cellsFromEdges),
    cellsFromFacesMap_(cellsFromFaces),
    cellsFromCellsMap_(cellsFromCells),
    reversePointMap_(reversePointMap),
    reverseFaceMap_(reverseFaceMap),
    reverseCellMap_(reverseCellMap),
    flipFaceFlux_(flipFaceFlux),
    patchPointMap_(patchPointMap),
    pointZoneMap_(pointZoneMap),
    faceZonePointMap_(faceZonePointMap),
    faceZoneFaceMap_(faceZoneFaceMap),
    cellZoneMap_(cellZoneMap),
    preMotionPoints_(preMotionPoints),
    oldPatchSizes_(oldPatchStarts.size()),
    oldPatchStarts_(oldPatchStarts),
    oldPatchNMeshPoints_(oldPatchNMeshPoints),
    oldCellVolumesPtr_(oldCellVolumesPtr)
{
    if (oldPatchStarts_.size())
    {
        // Calculate old patch sizes
        for (label patchi = 0; patchi < oldPatchStarts_.size() - 1; patchi++)
        {
            oldPatchSizes_[patchi] =
                oldPatchStarts_[patchi + 1] - oldPatchStarts_[patchi];
        }

        // Set the last one by hand
        const label lastPatchID = oldPatchStarts_.size() - 1;

        oldPatchSizes_[lastPatchID] = nOldFaces_ - oldPatchStarts_[lastPatchID];

        if (polyMesh::debug)
        {
            if (min(oldPatchSizes_) < 0)
            {
                FatalErrorInFunction
                    << abort(FatalError);
            }
        }
    }
}


Foam::mapPolyMesh::mapPolyMesh
(
    const polyMesh& mesh,
    const label nOldPoints,
    const label nOldFaces,
    const label nOldCells,
    labelList& pointMap,
    List<objectMap>& pointsFromPoints,
    labelList& faceMap,
    List<objectMap>& facesFromPoints,
    List<objectMap>& facesFromEdges,
    List<objectMap>& facesFromFaces,
    labelList& cellMap,
    List<objectMap>& cellsFromPoints,
    List<objectMap>& cellsFromEdges,
    List<objectMap>& cellsFromFaces,
    List<objectMap>& cellsFromCells,
    labelList& reversePointMap,
    labelList& reverseFaceMap,
    labelList& reverseCellMap,
    labelHashSet& flipFaceFlux,
    labelListList& patchPointMap,
    labelListList& pointZoneMap,
    labelListList& faceZonePointMap,
    labelListList& faceZoneFaceMap,
    labelListList& cellZoneMap,
    pointField& preMotionPoints,
    labelList& oldPatchStarts,
    labelList& oldPatchNMeshPoints,
    autoPtr<scalarField>& oldCellVolumesPtr,
    const bool reuse
)
:
    mesh_(mesh),
    nOldPoints_(nOldPoints),
    nOldFaces_(nOldFaces),
    nOldCells_(nOldCells),
    pointMap_(pointMap, reuse),
    pointsFromPointsMap_(pointsFromPoints, reuse),
    faceMap_(faceMap, reuse),
    facesFromPointsMap_(facesFromPoints, reuse),
    facesFromEdgesMap_(facesFromEdges, reuse),
    facesFromFacesMap_(facesFromFaces, reuse),
    cellMap_(cellMap, reuse),
    cellsFromPointsMap_(cellsFromPoints, reuse),
    cellsFromEdgesMap_(cellsFromEdges, reuse),
    cellsFromFacesMap_(cellsFromFaces, reuse),
    cellsFromCellsMap_(cellsFromCells, reuse),
    reversePointMap_(reversePointMap, reuse),
    reverseFaceMap_(reverseFaceMap, reuse),
    reverseCellMap_(reverseCellMap, reuse),
    flipFaceFlux_(flipFaceFlux),
    patchPointMap_(patchPointMap, reuse),
    pointZoneMap_(pointZoneMap, reuse),
    faceZonePointMap_(faceZonePointMap, reuse),
    faceZoneFaceMap_(faceZoneFaceMap, reuse),
    cellZoneMap_(cellZoneMap, reuse),
    preMotionPoints_(preMotionPoints, reuse),
    oldPatchSizes_(oldPatchStarts.size()),
    oldPatchStarts_(oldPatchStarts, reuse),
    oldPatchNMeshPoints_(oldPatchNMeshPoints, reuse),
    oldCellVolumesPtr_()
{
    // Reuse old content or clone
    if (reuse)
    {
        oldCellVolumesPtr_ = std::move(oldCellVolumesPtr);
    }
    else
    {
        oldCellVolumesPtr_ = oldCellVolumesPtr.clone();
    }

    if (oldPatchStarts_.size() > 0)
    {
        // Calculate old patch sizes
        for (label patchi = 0; patchi < oldPatchStarts_.size() - 1; patchi++)
        {
            oldPatchSizes_[patchi] =
                oldPatchStarts_[patchi + 1] - oldPatchStarts_[patchi];
        }

        // Set the last one by hand
        const label lastPatchID = oldPatchStarts_.size() - 1;

        oldPatchSizes_[lastPatchID] = nOldFaces_ - oldPatchStarts_[lastPatchID];

        if (polyMesh::debug)
        {
            if (min(oldPatchSizes_) < 0)
            {
                FatalErrorInFunction
                    << "Calculated negative old patch size."
                    << "  Error in mapping data"
                    << abort(FatalError);
            }
        }
    }
}


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