GeometricField.C

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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     \\/     M anipulation  |
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    Copyright (C) 2011-2017 OpenFOAM Foundation
    Copyright (C) 2015-2025 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
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#include "GeometricField.H"
#include "Time.H"
#include "dictionary.H"
#include "localIOdictionary.H"
#include "meshState.H"

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

// Check that both fields use the same mesh
#undef  checkField
#define checkField(fld1, fld2, op)                                  \
if (&(fld1).mesh() != &(fld2).mesh())                               \
{                                                                   \
    FatalErrorInFunction                                            \
        << "Different mesh for fields "                             \
        << (fld1).name() << " and " << (fld2).name()                \
        << " during operation " << op                               \
        << abort(FatalError);                                       \
}


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

template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::readFields
(
    const dictionary& dict
)
{
    Internal::readField(dict, "internalField");  // Includes size check

    boundaryField_.readField(*this, dict.subDict("boundaryField"));

    Type refLevel;

    if (dict.readIfPresent("referenceLevel", refLevel))
    {
        // Add to internal (primitive) field
        this->field() += refLevel;

        // Add to boundary fields
        forAll(boundaryField_, patchi)
        {
            boundaryField_[patchi] == boundaryField_[patchi] + refLevel;
        }
    }
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::readFields()
{
    dictionary dict
    (
        localIOdictionary::readContents
        (
            IOobject
            (
                this->name(),
                this->instance(),
                this->local(),
                this->db(),
                IOobjectOption::MUST_READ,
                IOobjectOption::NO_WRITE,
                IOobjectOption::NO_REGISTER
            ),
            typeName
        )
    );

    this->close();

    readFields(dict);
}


template<class Type, template<class> class PatchField, class GeoMesh>
bool Foam::GeometricField<Type, PatchField, GeoMesh>::readIfPresent()
{
    if (this->isReadRequired())
    {
        WarningInFunction
            << "The readOption MUST_READ or READ_MODIFIED"
            << " suggests that a read constructor for field " << this->name()
            << " would be more appropriate." << endl;
    }
    else if
    (
        this->isReadOptional()
     && this->template typeHeaderOk<this_type>(true)  // checkType = true
    )
    {
        readFields();
        readOldTimeIfPresent();

        return true;
    }

    return false;
}


template<class Type, template<class> class PatchField, class GeoMesh>
bool Foam::GeometricField<Type, PatchField, GeoMesh>::readOldTimeIfPresent()
{
    // Read the old time field if present
    IOobject field0
    (
        this->name()  + "_0",
        this->time().timeName(),
        this->db(),
        IOobjectOption::LAZY_READ,
        IOobjectOption::AUTO_WRITE,
        this->registerObject()
    );

    if
    (
        field0.template typeHeaderOk<this_type>(true)  // checkType = true
    )
    {
        DebugInFunction
            << "Reading old time level for field" << nl << this->info() << endl;

        field0Ptr_ = std::make_unique<this_type>(field0, this->mesh());

        // Ensure the old time field oriented flag is set to the parent's state
        // Note: required for backwards compatibility in case of restarting from
        // an old run where the oriented state may not have been set
        field0Ptr_->oriented() = this->oriented();

        field0Ptr_->timeIndex_ = timeIndex_ - 1;

        if (!field0Ptr_->readOldTimeIfPresent())
        {
            field0Ptr_->oldTime();
        }

        return true;
    }

    return false;
}


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

template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const Mesh& mesh,
    const dimensionSet& dims,
    const word& patchFieldType
)
:
    Internal(io, mesh, dims, false),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(mesh.boundary(), *this, patchFieldType)
{
    DebugInFunction
        << "Creating" << nl << this->info() << endl;

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const Mesh& mesh,
    const dimensionSet& dims,
    const wordList& patchFieldTypes,
    const wordList& actualPatchTypes
)
:
    Internal(io, mesh, dims, false),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(mesh.boundary(), *this, patchFieldTypes, actualPatchTypes)
{
    DebugInFunction
        << "Creating" << nl << this->info() << endl;

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const Mesh& mesh,
    const Type& value,
    const dimensionSet& dims,
    const word& patchFieldType
)
:
    Internal(io, mesh, value, dims, false),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(mesh.boundary(), *this, patchFieldType)
{
    DebugInFunction
        << "Creating" << nl << this->info() << endl;

    boundaryField_ == value;

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const Mesh& mesh,
    const Type& value,
    const dimensionSet& dims,
    const wordList& patchFieldTypes,
    const wordList& actualPatchTypes
)
:
    Internal(io, mesh, value, dims, false),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(mesh.boundary(), *this, patchFieldTypes, actualPatchTypes)
{
    DebugInFunction
        << "Creating" << nl << this->info() << endl;

    boundaryField_ == value;

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const Mesh& mesh,
    const dimensioned<Type>& dt,
    const word& patchFieldType
)
:
    GeometricField<Type, PatchField, GeoMesh>
    (
        io,
        mesh,
        dt.value(),
        dt.dimensions(),
        patchFieldType
    )
{}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const Mesh& mesh,
    const dimensioned<Type>& dt,
    const wordList& patchFieldTypes,
    const wordList& actualPatchTypes
)
:
    GeometricField<Type, PatchField, GeoMesh>
    (
        io,
        mesh,
        dt.value(),
        dt.dimensions(),
        patchFieldTypes,
        actualPatchTypes
    )
{}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const Internal& diField,
    const PtrList<PatchField<Type>>& ptfl
)
:
    Internal(io, diField),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(this->mesh().boundary(), *this, ptfl)
{
    DebugInFunction
        << "Copy construct from components" << nl << this->info() << endl;

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    Internal&& diField,
    const PtrList<PatchField<Type>>& ptfl
)
:
    Internal(io, std::move(diField)),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(this->mesh().boundary(), *this, ptfl)
{
    DebugInFunction
        << "Move construct from components" << nl << this->info() << endl;

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const tmp<Internal>& tfield,
    const PtrList<PatchField<Type>>& ptfl
)
:
    Internal(io, tfield),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(this->mesh().boundary(), *this, ptfl)
{
    DebugInFunction
        << "Construct from tmp internalField" << nl << this->info() << endl;

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const Internal& diField,
    const PtrList<PatchField<Type>>& ptfl
)
:
    Internal(diField),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(this->mesh().boundary(), *this, ptfl)
{
    DebugInFunction
        << "Copy construct from components" << nl << this->info() << endl;

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    Internal&& diField,
    const PtrList<PatchField<Type>>& ptfl
)
:
    Internal(std::move(diField)),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(this->mesh().boundary(), *this, ptfl)
{
    DebugInFunction
        << "Move construct from components" << nl << this->info() << endl;

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const Mesh& mesh,
    const dimensionSet& dims,
    const Field<Type>& iField,
    const word& patchFieldType
)
:
    Internal(io, mesh, dims, iField),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(mesh.boundary(), *this, patchFieldType)
{
    DebugInFunction
        << "Copy construct from primitive field" << nl << this->info() << endl;

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const Mesh& mesh,
    const dimensionSet& dims,
    Field<Type>&& iField,
    const word& patchFieldType
)
:
    Internal(io, mesh, dims, std::move(iField)),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(mesh.boundary(), *this, patchFieldType)
{
    DebugInFunction
        << "Move construct from primitive field" << nl << this->info() << endl;

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const Mesh& mesh,
    const dimensionSet& dims,
    const tmp<Field<Type>>& tfield,
    const word& patchFieldType
)
:
    Internal(io, mesh, dims, tfield),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(mesh.boundary(), *this, patchFieldType)
{
    DebugInFunction
        << "Construct from tmp primitive field" << nl << this->info() << endl;

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const Mesh& mesh,
    const dimensionSet& dims,
    const Field<Type>& iField,
    const PtrList<PatchField<Type>>& ptfl
)
:
    Internal(io, mesh, dims, iField),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(mesh.boundary(), *this, ptfl)
{
    DebugInFunction
        << "Copy construct from components" << nl << this->info() << endl;

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const Mesh& mesh,
    const dimensionSet& dims,
    Field<Type>&& iField,
    const PtrList<PatchField<Type>>& ptfl
)
:
    Internal(io, mesh, dims, std::move(iField)),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(mesh.boundary(), *this, ptfl)
{
    DebugInFunction
        << "Move construct from components" << nl << this->info() << endl;

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const Mesh& mesh,
    const dimensionSet& dims,
    const tmp<Field<Type>>& tfield,
    const PtrList<PatchField<Type>>& ptfl
)
:
    Internal(io, mesh, dims, tfield),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(mesh.boundary(), *this, ptfl)
{
    DebugInFunction
        << "Construct from tmp internalField" << nl << this->info() << endl;

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const Mesh& mesh,
    const bool readOldTime
)
:
    Internal(io, mesh, dimless, false),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(mesh.boundary())
{
    DebugInFunction
        << "Read construct" << nl << this->info() << endl;

    if (!this->isAnyRead())
    {
        // Do not warn about LAZY_READ since we may have already checked
        // the IOobject before calling.
        WarningInFunction
            << "Had readOption NO_READ for field "
            << this->name() << ", but constructor always reads field!"
            << endl;
    }

    readFields();

    if (readOldTime)
    {
        readOldTimeIfPresent();
    }

    DebugInFunction
        << "Finishing read-construction" << nl << this->info() << endl;
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const Mesh& mesh,
    const dictionary& dict
)
:
    Internal(io, mesh, dimless, false),
    timeIndex_(this->time().timeIndex()),
    boundaryField_(mesh.boundary())
{
    readFields(dict);

    DebugInFunction
        << "Finishing dictionary-construct" << nl << this->info() << endl;
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const GeometricField<Type, PatchField, GeoMesh>& gf
)
:
    Internal(gf),
    timeIndex_(gf.timeIndex()),
    boundaryField_(*this, gf.boundaryField_)
{
    DebugInFunction
        << "Copy construct" << nl << this->info() << endl;

    if (gf.field0Ptr_)
    {
        field0Ptr_ = std::make_unique<this_type>(*gf.field0Ptr_);
    }

    this->writeOpt(IOobjectOption::NO_WRITE);
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const tmp<GeometricField<Type, PatchField, GeoMesh>>& tgf
)
:
    Internal(tgf.constCast(), tgf.movable()),
    timeIndex_(tgf().timeIndex()),
    boundaryField_(*this, tgf().boundaryField_)
{
    DebugInFunction
        << "Constructing from tmp" << nl << this->info() << endl;

    this->writeOpt(IOobjectOption::NO_WRITE);

    tgf.clear();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const GeometricField<Type, PatchField, GeoMesh>& gf
)
:
    Internal(io, gf),
    timeIndex_(gf.timeIndex()),
    boundaryField_(*this, gf.boundaryField_)
{
    DebugInFunction
        << "Copy construct, resetting IO params" << nl
        << this->info() << endl;

    if (!readIfPresent() && gf.field0Ptr_)
    {
        field0Ptr_ = std::make_unique<this_type>
        (
            io.name() + "_0",
            *gf.field0Ptr_
        );
    }
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const tmp<GeometricField<Type, PatchField, GeoMesh>>& tgf
)
:
    Internal(io, tgf.constCast(), tgf.movable()),
    timeIndex_(tgf().timeIndex()),
    boundaryField_(*this, tgf().boundaryField_)
{
    DebugInFunction
        << "Constructing from tmp resetting IO params" << nl
        << this->info() << endl;

    tgf.clear();

    readIfPresent();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const word& newName,
    const GeometricField<Type, PatchField, GeoMesh>& gf
)
:
    Internal(newName, gf),
    timeIndex_(gf.timeIndex()),
    boundaryField_(*this, gf.boundaryField_)
{
    DebugInFunction
        << "Copy construct, resetting name" << nl
        << this->info() << endl;

    if (!readIfPresent() && gf.field0Ptr_)
    {
        field0Ptr_ = std::make_unique<this_type>
        (
            newName + "_0",
            *gf.field0Ptr_
        );
    }
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const word& newName,
    const tmp<GeometricField<Type, PatchField, GeoMesh>>& tgf
)
:
    Internal(newName, tgf.constCast(), tgf.movable()),
    timeIndex_(tgf().timeIndex()),
    boundaryField_(*this, tgf().boundaryField_)
{
    DebugInFunction
        << "Constructing from tmp resetting name" << nl
        << this->info() << endl;

    tgf.clear();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const GeometricField<Type, PatchField, GeoMesh>& gf,
    const word& patchFieldType
)
:
    Internal(io, gf),
    timeIndex_(gf.timeIndex()),
    boundaryField_(this->mesh().boundary(), *this, patchFieldType)
{
    DebugInFunction
        << "Copy construct, resetting IO params" << nl
        << this->info() << endl;

    boundaryField_ == gf.boundaryField_;

    if (!readIfPresent() && gf.field0Ptr_)
    {
        field0Ptr_ = std::make_unique<this_type>
        (
            io.name() + "_0",
            *gf.field0Ptr_
        );
    }
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const GeometricField<Type, PatchField, GeoMesh>& gf,
    const wordList& patchFieldTypes,
    const wordList& actualPatchTypes
)
:
    Internal(io, gf),
    timeIndex_(gf.timeIndex()),
    boundaryField_
    (
        this->mesh().boundary(),
        *this,
        patchFieldTypes,
        actualPatchTypes
    )
{
    DebugInFunction
        << "Copy construct, resetting IO params and patch types" << nl
        << this->info() << endl;

    boundaryField_ == gf.boundaryField_;

    if (!readIfPresent() && gf.field0Ptr_)
    {
        field0Ptr_ = std::make_unique<this_type>
        (
            io.name() + "_0",
            *gf.field0Ptr_
        );
    }
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const GeometricField<Type, PatchField, GeoMesh>& gf,
    const labelList& patchIDs,
    const word& patchFieldType
)
:
    Internal(io, gf),
    timeIndex_(gf.timeIndex()),
    boundaryField_(*this, gf.boundaryField_, patchIDs, patchFieldType)
{
    DebugInFunction
        << "Copy construct, resetting IO params and setting patchFieldType "
        << "for patchIDs" << nl
        << this->info() << endl;

    if (!readIfPresent() && gf.field0Ptr_)
    {
        field0Ptr_ = std::make_unique<this_type>
        (
            io.name() + "_0",
            *gf.field0Ptr_
        );
    }
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::GeometricField
(
    const IOobject& io,
    const tmp<GeometricField<Type, PatchField, GeoMesh>>& tgf,
    const wordList& patchFieldTypes,
    const wordList& actualPatchTypes
)
:
    Internal(io, tgf.constCast(), tgf.movable()),
    timeIndex_(tgf().timeIndex()),
    boundaryField_
    (
        this->mesh().boundary(),
        *this,
        patchFieldTypes,
        actualPatchTypes
    )
{
    DebugInFunction
        << "Constructing from tmp resetting IO params and patch types" << nl
        << this->info() << endl;

    boundaryField_ == tgf().boundaryField_;

    tgf.clear();
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::tmp<Foam::GeometricField<Type, PatchField, GeoMesh>>
Foam::GeometricField<Type, PatchField, GeoMesh>::clone() const
{
    return tmp<GeometricField<Type, PatchField, GeoMesh>>::New(*this);
}


// * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * * * //

template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>::~GeometricField()
{
    /*
    if (debug)
    {
        // Problem: temporary fields might have their internal field
        // already stolen so boundary fields will not be able to access the
        // internal field anymore
        boundaryField_.check();
    }
    */

    // FUTURE: register cache field info
    // // this->db().cacheTemporaryObject(*this);
}


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

template<class Type, template<class> class PatchField, class GeoMesh>
typename
Foam::GeometricField<Type, PatchField, GeoMesh>::Internal&
Foam::GeometricField<Type, PatchField, GeoMesh>::internalFieldRef
(
    const bool updateAccessTime
)
{
    if (updateAccessTime)
    {
        this->setUpToDate();
        storeOldTimes();
    }
    return *this;
}


template<class Type, template<class> class PatchField, class GeoMesh>
typename
Foam::GeometricField<Type, PatchField, GeoMesh>::Internal::FieldType&
Foam::GeometricField<Type, PatchField, GeoMesh>::primitiveFieldRef
(
    const bool updateAccessTime
)
{
    if (updateAccessTime)
    {
        this->setUpToDate();
        storeOldTimes();
    }
    return *this;
}


template<class Type, template<class> class PatchField, class GeoMesh>
typename
Foam::GeometricField<Type, PatchField, GeoMesh>::Boundary&
Foam::GeometricField<Type, PatchField, GeoMesh>::boundaryFieldRef
(
    const bool updateAccessTime
)
{
    if (updateAccessTime)
    {
        this->setUpToDate();
        storeOldTimes();
    }
    return boundaryField_;
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::label
Foam::GeometricField<Type, PatchField, GeoMesh>::nOldTimes() const noexcept
{
    return (field0Ptr_ ? (field0Ptr_->nOldTimes() + 1) : 0);
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::storeOldTimes() const
{
    if
    (
        field0Ptr_
     && timeIndex_ != this->time().timeIndex()
     && !this->name().ends_with("_0")
    )
    {
        storeOldTime();
        timeIndex_ = this->time().timeIndex();
    }

    // Correct time index
    //timeIndex_ = this->time().timeIndex();
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::storeOldTime() const
{
    if (field0Ptr_)
    {
        field0Ptr_->storeOldTime();

        DebugInFunction
            << "Storing old time field for field" << nl << this->info() << endl;

        *field0Ptr_ == *this;
        field0Ptr_->timeIndex_ = timeIndex_;

        if (field0Ptr_->field0Ptr_)
        {
            field0Ptr_->writeOpt(this->writeOpt());
        }
    }
}


template<class Type, template<class> class PatchField, class GeoMesh>
const Foam::GeometricField<Type, PatchField, GeoMesh>&
Foam::GeometricField<Type, PatchField, GeoMesh>::oldTime() const
{
    if (!field0Ptr_)
    {
        field0Ptr_ = std::make_unique<this_type>
        (
            IOobject
            (
                this->name() + "_0",
                this->time().timeName(),
                this->db(),
                IOobjectOption::NO_READ,
                IOobjectOption::NO_WRITE,
                this->registerObject()
            ),
            *this
        );

        if (debug)
        {
            InfoInFunction
                << "created old time field " << field0Ptr_->info() << endl;

            if (debug&2)
            {
                error::printStack(Info);
            }
        }
    }
    else
    {
        storeOldTimes();
    }

    return *field0Ptr_;
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::GeometricField<Type, PatchField, GeoMesh>&
Foam::GeometricField<Type, PatchField, GeoMesh>::oldTime()
{
    static_cast<const GeometricField<Type, PatchField, GeoMesh>&>(*this)
        .oldTime();

    return *field0Ptr_;
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::storePrevIter() const
{
    if (!fieldPrevIterPtr_)
    {
        DebugInFunction
            << "Allocating previous iteration field" << nl
            << this->info() << endl;

        fieldPrevIterPtr_ = std::make_unique<this_type>
        (
            this->name() + "PrevIter",
            *this
        );
    }
    else
    {
        *fieldPrevIterPtr_ == *this;
    }
}


template<class Type, template<class> class PatchField, class GeoMesh>
const Foam::GeometricField<Type, PatchField, GeoMesh>&
Foam::GeometricField<Type, PatchField, GeoMesh>::prevIter() const
{
    if (!fieldPrevIterPtr_)
    {
        FatalErrorInFunction
            << "previous iteration field" << endl << this->info() << endl
            << "  not stored."
            << "  Use field.storePrevIter() at start of iteration."
            << abort(FatalError);
    }

    return *fieldPrevIterPtr_;
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::clearOldTimes()
{
    field0Ptr_.reset(nullptr);
    fieldPrevIterPtr_.reset(nullptr);
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::
correctBoundaryConditions()
{
    // updateAccessTime
    {
        this->setUpToDate();
        storeOldTimes();
    }
    boundaryField_.evaluate();
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::
correctLocalBoundaryConditions()
{
    // updateAccessTime
    {
        this->setUpToDate();
        storeOldTimes();
    }
    boundaryField_.evaluateLocal();
}


template<class Type, template<class> class PatchField, class GeoMesh>
bool Foam::GeometricField<Type, PatchField, GeoMesh>::needReference() const
{
    // Search all boundary conditions, if any are
    // fixed-value or mixed (Robin) do not set reference level for solution.

    bool needRef = true;

    for (const auto& pf : boundaryField_)
    {
        if (pf.fixesValue())
        {
            needRef = false;
            break;
        }
    }

    return returnReduceAnd(needRef);
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::relax(const scalar alpha)
{
    DebugInFunction
        << "Relaxing" << nl << this->info() << " by " << alpha << endl;

    operator==(prevIter() + alpha*(*this - prevIter()));
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::relax()
{
    word name = this->name();

    if (this->mesh().data().isFinalIteration())
    {
        name += "Final";
    }

    scalar relaxCoeff = 1;

    if (this->mesh().relaxField(name, relaxCoeff))
    {
        relax(relaxCoeff);
    }
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::word Foam::GeometricField<Type, PatchField, GeoMesh>::select
(
    bool final
) const
{
    if (final)
    {
        return this->name() + "Final";
    }

    return this->name();
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::writeMinMax
(
    Ostream& os,
    label comm
) const
{
    MinMax<Type> range = Foam::minMax(*this, comm).value();

    os  << "min/max(" << this->name() << ") = "
        << range.min() << ", " << range.max() << endl;
}


template<class Type, template<class> class PatchField, class GeoMesh>
bool Foam::GeometricField<Type, PatchField, GeoMesh>::
writeData(Ostream& os) const
{
    this->internalField().writeData(os, "internalField");
    os  << nl;
    this->boundaryField().writeEntry("boundaryField", os);

    os.check(FUNCTION_NAME);
    return os.good();
}


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

template<class Type, template<class> class PatchField, class GeoMesh>
Foam::tmp<Foam::GeometricField<Type, PatchField, GeoMesh>>
Foam::GeometricField<Type, PatchField, GeoMesh>::T() const
{
    auto tresult = GeometricField<Type, PatchField, GeoMesh>::New
    (
        this->name() + ".T()",
        this->mesh(),
        this->dimensions()
    );

    Foam::T(tresult.ref().primitiveFieldRef(), primitiveField());
    Foam::T(tresult.ref().boundaryFieldRef(), boundaryField());

    return tresult;
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::tmp
<
    Foam::GeometricField
    <
        typename Foam::GeometricField<Type, PatchField, GeoMesh>::cmptType,
        PatchField,
        GeoMesh
    >
>
Foam::GeometricField<Type, PatchField, GeoMesh>::component
(
    const direction d
) const
{
    auto tresult = GeometricField<cmptType, PatchField, GeoMesh>::New
    (
        this->name() + ".component(" + Foam::name(d) + ')',
        this->mesh(),
        this->dimensions()
    );

    Foam::component(tresult.ref().primitiveFieldRef(), primitiveField(), d);
    Foam::component(tresult.ref().boundaryFieldRef(), boundaryField(), d);

    return tresult;
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::replace
(
    const direction d,
    const GeometricField
    <
        typename GeometricField<Type, PatchField, GeoMesh>::cmptType,
        PatchField,
        GeoMesh
     >& gcf
)
{
    primitiveFieldRef().replace(d, gcf.primitiveField());
    boundaryFieldRef().replace(d, gcf.boundaryField());
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::replace
(
    const direction d,
    const dimensioned<cmptType>& ds
)
{
    primitiveFieldRef().replace(d, ds.value());
    boundaryFieldRef().replace(d, ds.value());
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::clamp_min
(
    const Type& lower
)
{
    primitiveFieldRef().clamp_min(lower);
    boundaryFieldRef().clamp_min(lower);
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::clamp_max
(
    const Type& upper
)
{
    primitiveFieldRef().clamp_max(upper);
    boundaryFieldRef().clamp_max(upper);
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::clamp_min
(
    const dimensioned<Type>& lower
)
{
    this->clamp_min(lower.value());
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::clamp_max
(
    const dimensioned<Type>& upper
)
{
    this->clamp_max(upper.value());
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::clamp_min
(
    const GeometricField<Type, PatchField, GeoMesh>& lower
)
{
    primitiveFieldRef().clamp_min(lower.primitiveField());
    boundaryFieldRef().clamp_min(lower.boundaryField());
    correctLocalBoundaryConditions();
    if (GeometricBoundaryField<Type, PatchField, GeoMesh>::debug)
    {
        boundaryField().check();
    }
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::clamp_max
(
    const GeometricField<Type, PatchField, GeoMesh>& upper
)
{
    primitiveFieldRef().clamp_max(upper.primitiveField());
    boundaryFieldRef().clamp_max(upper.boundaryField());
    correctLocalBoundaryConditions();
    if (GeometricBoundaryField<Type, PatchField, GeoMesh>::debug)
    {
        boundaryField().check();
    }
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::clamp_range
(
    const Type& lower,
    const Type& upper
)
{
    primitiveFieldRef().clamp_range(lower, upper);
    boundaryFieldRef().clamp_range(lower, upper);
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::clamp_range
(
    const MinMax<Type>& range
)
{
    primitiveFieldRef().clamp_range(range.min(), range.max());
    boundaryFieldRef().clamp_range(range.min(), range.max());
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::clamp_range
(
    const dimensioned<Type>& lower,
    const dimensioned<Type>& upper
)
{
    this->clamp_range(lower.value(), upper.value());
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::clamp_range
(
    const dimensioned<MinMax<Type>>& range
)
{
    this->clamp_range(range.value());
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::negate()
{
    primitiveFieldRef().negate();
    boundaryFieldRef().negate();
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::normalise()
{
    primitiveFieldRef().normalise();
    boundaryFieldRef().normalise();
}


// * * * * * * * * * * * * * * * Member Operators  * * * * * * * * * * * * * //

template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::operator=
(
    const GeometricField<Type, PatchField, GeoMesh>& gf
)
{
    if (this == &gf)
    {
        return;  // Self-assignment is a no-op
    }

    checkField(*this, gf, "=");

    // Only assign field contents not ID

    internalFieldRef() = gf.internalField();
    boundaryFieldRef() = gf.boundaryField();

    // Make sure any e.g. jump-cyclic are updated.
    boundaryFieldRef().evaluate_if
    (
        [](const auto& pfld) { return pfld.constraintOverride(); }
    );
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::operator=
(
    const tmp<GeometricField<Type, PatchField, GeoMesh>>& tgf
)
{
    const auto& gf = tgf();

    if (this == &gf)
    {
        return;  // Self-assignment is a no-op
    }

    checkField(*this, gf, "=");

    // Only assign field contents not ID

    this->dimensions() = gf.dimensions();
    this->oriented() = gf.oriented();

    if (tgf.movable())
    {
        // Transfer storage from the tmp
        primitiveFieldRef().transfer(tgf.constCast().primitiveFieldRef());
    }
    else
    {
        primitiveFieldRef() = gf.primitiveField();
    }

    boundaryFieldRef() = gf.boundaryField();

    tgf.clear();

    // Make sure any e.g. jump-cyclic are updated.
    boundaryFieldRef().evaluate_if
    (
        [](const auto& pfld) { return pfld.constraintOverride(); }
    );
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::operator=
(
    const dimensioned<Type>& dt
)
{
    internalFieldRef() = dt;
    boundaryFieldRef() = dt.value();

    // Make sure any e.g. jump-cyclic are updated.
    boundaryFieldRef().evaluate_if
    (
        [](const auto& pfld) { return pfld.constraintOverride(); }
    );
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::operator==
(
    const tmp<GeometricField<Type, PatchField, GeoMesh>>& tgf
)
{
    const auto& gf = tgf();

    checkField(*this, gf, "==");

    // Only assign field contents not ID

    internalFieldRef() = gf.internalField();
    boundaryFieldRef() == gf.boundaryField();

    tgf.clear();

    // Make sure any e.g. jump-cyclic are updated.
    boundaryFieldRef().evaluate_if
    (
        [](const auto& pfld) { return pfld.constraintOverride(); }
    );
}


template<class Type, template<class> class PatchField, class GeoMesh>
void Foam::GeometricField<Type, PatchField, GeoMesh>::operator==
(
    const dimensioned<Type>& dt
)
{
    internalFieldRef() = dt;
    boundaryFieldRef() == dt.value();

    // Make sure any e.g. jump-cyclic are updated.
    boundaryFieldRef().evaluate_if
    (
        [](const auto& pfld) { return pfld.constraintOverride(); }
    );
}


#define COMPUTED_ASSIGNMENT(TYPE, op)                                          \
                                                                               \
template<class Type, template<class> class PatchField, class GeoMesh>          \
void Foam::GeometricField<Type, PatchField, GeoMesh>::operator op              \
(                                                                              \
    const GeometricField<TYPE, PatchField, GeoMesh>& gf                        \
)                                                                              \
{                                                                              \
    checkField(*this, gf, #op);                                                \
                                                                               \
    internalFieldRef() op gf.internalField();                                  \
    boundaryFieldRef() op gf.boundaryField();                                  \
                                                                               \
    boundaryFieldRef().evaluate_if                                             \
    (                                                                          \
        [](const auto& pfld) { return pfld.constraintOverride(); }             \
    );                                                                         \
}                                                                              \
                                                                               \
template<class Type, template<class> class PatchField, class GeoMesh>          \
void Foam::GeometricField<Type, PatchField, GeoMesh>::operator op              \
(                                                                              \
    const tmp<GeometricField<TYPE, PatchField, GeoMesh>>& tgf                  \
)                                                                              \
{                                                                              \
    operator op(tgf());                                                        \
    tgf.clear();                                                               \
                                                                               \
    boundaryFieldRef().evaluate_if                                             \
    (                                                                          \
        [](const auto& pfld) { return pfld.constraintOverride(); }             \
    );                                                                         \
}                                                                              \
                                                                               \
template<class Type, template<class> class PatchField, class GeoMesh>          \
void Foam::GeometricField<Type, PatchField, GeoMesh>::operator op              \
(                                                                              \
    const dimensioned<TYPE>& dt                                                \
)                                                                              \
{                                                                              \
    internalFieldRef() op dt;                                                  \
    boundaryFieldRef() op dt.value();                                          \
                                                                               \
    boundaryFieldRef().evaluate_if                                             \
    (                                                                          \
        [](const auto& pfld) { return pfld.constraintOverride(); }             \
    );                                                                         \
}

COMPUTED_ASSIGNMENT(Type, +=)
COMPUTED_ASSIGNMENT(Type, -=)
COMPUTED_ASSIGNMENT(scalar, *=)
COMPUTED_ASSIGNMENT(scalar, /=)

#undef COMPUTED_ASSIGNMENT


// * * * * * * * * * * * * * * * IOstream Operators  * * * * * * * * * * * * //

template<class Type, template<class> class PatchField, class GeoMesh>
Foam::Ostream& Foam::operator<<
(
    Ostream& os,
    const GeometricField<Type, PatchField, GeoMesh>& fld
)
{
    fld.writeData(os);
    return os;
}


template<class Type, template<class> class PatchField, class GeoMesh>
Foam::Ostream& Foam::operator<<
(
    Ostream& os,
    const tmp<GeometricField<Type, PatchField, GeoMesh>>& tfld
)
{
    tfld().writeData(os);
    tfld.clear();

    return os;
}


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

#undef checkField

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

#include "GeometricFieldNew.C"
#include "GeometricFieldFunctions.C"

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