periodic.C

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License
    This file is part of OpenFOAM.
 
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#include "periodic.H"
#include "polyMesh.H"
#include "Time.H"
#include "addToRunTimeSelectionTable.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
    namespace zoneGenerators
    {
        defineTypeNameAndDebug(periodic, 0);
        addToRunTimeSelectionTable
        (
            zoneGenerator,
            periodic,
            dictionary
        );
    }
}
 
 
// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
 
bool Foam::zoneGenerators::periodic::activate() const
{
    const scalar t =
        repeat_ > 0
      ? begin_ + fmod(mesh_.time().userTimeValue() - begin_, repeat_)
      : mesh_.time().userTimeValue();
 
    const bool active = t >= begin_ && t < end_;
 
    return deactivate_ ? !active : active;
}
 
 
bool Foam::zoneGenerators::periodic::stateChanged() const
{
    if (activate())
    {
        return !active_;
    }
    else
    {
        return active_;
    }
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::zoneGenerators::periodic::periodic
(
    const word& name,
    const polyMesh& mesh,
    const dictionary& dict
)
:
    zoneGenerator(name, mesh, dict),
    zoneGenerator_(zoneGenerator::New(mesh, dict)),
    begin_
    (
        dict.lookupOrDefault<scalar>
        (
            "begin",
            unitNone,
            mesh.time().beginTime().value()
        )
 
    ),
    end_
    (
        dict.lookupOrDefault<scalar>
        (
            "end",
            unitNone,
            mesh.time().endTime().value()
        )
 
    ),
    repeat_(dict.lookupOrDefault<scalar>("repeat", unitNone, 0)),
    deactivate_(dict.lookupOrDefault<Switch>("deactivate", false)),
    active_(false)
{
    moveUpdate_ = true;
}
 
 
// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
Foam::zoneGenerators::periodic::~periodic()
{}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
Foam::zoneSet Foam::zoneGenerators::periodic::generate() const
{
    if (activate())
    {
        active_ = true;
        return zoneGenerator_->generate().clone(zoneName_);
    }
    else
    {
        active_ = false;
 
        if (!nullZoneSet_.valid())
        {
            zoneSet zs(zoneGenerator_->generate());
 
            nullZoneSet_ = zoneSet
            (
                zs.pValid()
              ? new pointZone
                (
                    zoneName_,
                    labelList::null(),
                    mesh_.pointZones(),
                    moveUpdate_,
                    true
                )
              : nullptr,
                zs.cValid()
              ? new cellZone
                (
                    zoneName_,
                    labelList::null(),
                    mesh_.cellZones(),
                    moveUpdate_,
                    true
                )
              : nullptr,
                zs.fValid()
              ? new faceZone
                (
                    zoneName_,
                    labelList::null(),
                    boolList::null(),
                    mesh_.faceZones(),
                    moveUpdate_,
                    true
                )
              : nullptr
            );
        }
 
        // Return a zoneSet of references to nullZoneSet_
        return zoneSet(nullZoneSet_, false);
    }
}
 
 
Foam::zoneSet Foam::zoneGenerators::periodic::movePoints() const
{
    // Regenerate the zones if they update on move or the state has changed
    if (zoneGenerator_->moveUpdate() || stateChanged())
    {
        return generate();
    }
    else
    {
        return zoneSet();
    }
}
 
 
// ************************************************************************* //