periodic.H

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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
    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/>.
 
Class
    Foam::zoneGenerators::periodic
 
Description
    A zoneGenerator which activates the zoneSet returned by the given
    zoneGenerator for a given period with optional repetition.
 
Usage
    \table
        Property   | Description                  | Required | Default value
        type       | Type: periodic               | yes      |
        begin      | Begin time for the zones     | no       | Time::beginTime()
        end        | End time for the zones       | no       | Time::endTime()
        repeat     | Repetition period            | no       |
        deactivate | Invert the activation logic  | no       | false
    \endtable
    These options are followed by a single zoneGenerator specification.
 
    Example of the specification for a periodic box cellZone in the
    constant/zonesGenerator file:
    \verbatim
        box1
        {
            type    periodic;
 
            begin   0.001;
            end     0.002;
            repeat  0.002;
 
            box1
            {
                type        box;
                zoneType    cell;
                moveUpdate  true;
 
                min     (-0.0075 0 -1);
                max     (-0.003 0.0025 1);
            }
        }
    \endverbatim
 
SourceFiles
    periodic.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef periodic_zoneGenerator_H
#define periodic_zoneGenerator_H
 
#include "zoneGeneratorList.H"
#include "Switch.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace zoneGenerators
{
 
/*---------------------------------------------------------------------------*\
                          Class periodic Declaration
\*---------------------------------------------------------------------------*/
 
class periodic
:
    public zoneGenerator
{
    // Private Data
 
        autoPtr<zoneGenerator> zoneGenerator_;
 
        //- Optional begin time for the zones being active
        //  Defaults to Time::beginTime
        const scalar begin_;
 
        //- Optional end time for the zones being active
        //  Defaults to Time::endTime
        const scalar end_;
 
        //- Optional repetition period for the zones being active
        //  Defaults to no repetition
        const scalar repeat_;
 
        //- Switch to deactivate rather than activate within the time-range
        const Switch deactivate_;
 
        //- Active state
        mutable bool active_;
 
        //- Cached null zoneSet
        mutable zoneSet nullZoneSet_;
 
 
    // Private Member Functions
 
        //- Returns true when the zones should be activated
        bool activate() const;
 
        //- Returns true if the active state of the zones has changed
        bool stateChanged() const;
 
 
public:
 
    //- Runtime type information
    TypeName("periodic");
 
 
    // Constructors
 
        //- Construct from dictionary
        periodic
        (
            const word& name,
            const polyMesh& mesh,
            const dictionary& dict
        );
 
 
    //- Destructor
    virtual ~periodic();
 
 
    // Member Functions
 
        virtual zoneSet generate() const;
 
        virtual zoneSet movePoints() const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace zoneGenerators
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //