coordinateSystem.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::coordinateSystem
 
Description
    Base class for other coordinate system specifications.
 
    All systems are defined by an origin point and a co-ordinate rotation.
 
    \verbatim
    coordinateSystem
    {
        type    cartesian;
        origin  (0 0 0);
        coordinateRotation
        {
            type        cylindrical;
            e3          (0 0 1);
        }
    }
    \endverbatim
 
    Types of coordinateRotation:
      -# axesRotation
      -# \link STARCDCoordinateRotation STARCDRotation \endlink
      -# cylindricalCS cylindrical
      -# EulerCoordinateRotation
 
    Type of co-ordinates:
      -# \link cartesianCS cartesian \endlink
 
 
SourceFiles
    coordinateSystem.C
    coordinateSystemNew.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef coordinateSystem_H
#define coordinateSystem_H
 
#include "coordinateRotation.H"
#include "objectRegistry.H"
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward declaration of friend functions and operators
 
class coordinateSystem;
 
bool operator!=(const coordinateSystem&, const coordinateSystem&);
Ostream& operator<<(Ostream&, const coordinateSystem&);
 
 
/*---------------------------------------------------------------------------*\
                      Class coordinateSystem Declaration
\*---------------------------------------------------------------------------*/
 
class coordinateSystem
{
    // Private Data
 
        //- Name of coordinate system
        word name_;
 
        //- Origin
        point origin_;
 
        //- Local-to-Global transformation tensor
        mutable autoPtr<coordinateRotation> R_;
 
 
protected:
 
    // Protected Member Functions
 
        //- Convert from local coordinate system to the global Cartesian system
        //  with optional translation for the origin
        virtual vector localToGlobal(const vector&, bool translate) const;
 
        //- Convert from local coordinate system to the global Cartesian system
        //  with optional translation for the origin
        virtual tmp<vectorField> localToGlobal
        (
            const vectorField&,
            bool translate
        ) const;
 
        //- Convert from global Cartesian system to the local coordinate system
        //  with optional translation for the origin
        virtual vector globalToLocal(const vector&, bool translate) const;
 
        //- Convert from global Cartesian system to the local coordinate system
        //  with optional translation for the origin
        virtual tmp<vectorField> globalToLocal
        (
            const vectorField&,
            bool translate
        ) const;
 
 
public:
 
    //- Runtime type information
    TypeName("coordinateSystem");
 
 
    // Constructors
 
        //- Construct from origin
        coordinateSystem
        (
            const word& name,
            const point& origin
        );
 
        //- Construct from origin and rotation
        coordinateSystem
        (
            const word& name,
            const point& origin,
            const coordinateRotation&
        );
 
        //- Construct from origin and 2 axes
        coordinateSystem
        (
            const word& name,
            const point& origin,
            const vector& axis,
            const vector& dirn
        );
 
        //- Construct from dictionary with a given name
        coordinateSystem(const word& name, const dictionary&);
 
        //- Copy constructor
        coordinateSystem(const coordinateSystem& cs);
 
        //- Construct and return a clone
        virtual autoPtr<coordinateSystem> clone() const
        {
            return autoPtr<coordinateSystem>(new coordinateSystem(*this));
        }
 
 
    // Declare run-time constructor selection table
    declareRunTimeSelectionTable
    (
        autoPtr,
        coordinateSystem,
        dictionary,
        (
            const word& name,
            const dictionary& dict
        ),
        (name, dict)
    );
 
 
    // Selectors
 
        //- Select constructed from dictionary and objectRegistry
        static autoPtr<coordinateSystem> New
        (
            const objectRegistry& obr,
            const dictionary& dict
        );
 
        //- Select constructed from name and dictionary
        static autoPtr<coordinateSystem> New
        (
            const word& name,
            const dictionary& dict
        );
 
 
    //- Destructor
    virtual ~coordinateSystem();
 
 
    // Member Functions
 
        // Access
 
            //- Return name
            const word& name() const
            {
                return name_;
            }
 
            //- Return keyword
            const word& keyword() const
            {
                return name_;
            }
 
            //- Return origin
            const point& origin() const
            {
                return origin_;
            }
 
            //- Return const reference to co-ordinate rotation
            const coordinateRotation& R() const
            {
                return R_();
            }
 
            //- Update and return the co-ordinate rotation for a list of points
            const coordinateRotation& R(const UList<vector>& points) const
            {
                R_->updatePoints(points);
                return R_();
            }
 
 
        // Write
 
            //- Write
            virtual void write(Ostream&) const;
 
            //- Write dictionary
            void writeDict(Ostream&, bool subDict=true) const;
 
 
        // Transformations
 
            //- Convert from position in local coordinate system to global
            //  Cartesian position
            point globalPosition(const point& local) const
            {
                return localToGlobal(local, true);
            }
 
            //- Convert from position in local coordinate system to global
            //  Cartesian position
            tmp<pointField> globalPosition(const pointField& local) const
            {
                return localToGlobal(local, true);
            }
 
            //- Convert from vector components in local coordinate system to
            //  global Cartesian vector
            vector globalVector(const vector& local) const
            {
                return localToGlobal(local, false);
            }
 
            //- Convert from vector components in local coordinate system to
            //  global Cartesian vector
            tmp<vectorField> globalVector(const vectorField& local) const
            {
                return localToGlobal(local, false);
            }
 
            //- Convert from global Cartesian position to position in local
            //  coordinate system
            point localPosition(const point& global) const
            {
                return globalToLocal(global, true);
            }
 
            //- Convert from global Cartesian position to position in local
            //  coordinate system
            tmp<pointField> localPosition(const pointField& global) const
            {
                return globalToLocal(global, true);
            }
 
            //- Convert from global Cartesian vector to components in local
            //  coordinate system
            vector localVector(const vector& global) const
            {
                return globalToLocal(global, false);
            }
 
            //- Convert from global Cartesian vector to components in local
            //  coordinate system
            tmp<vectorField> localVector(const vectorField& global) const
            {
                return globalToLocal(global, false);
            }
 
 
    // Member Operators
 
        //- Assignment operator
        void operator=(const coordinateSystem&);
 
 
    // IOstream Operators
 
        friend Ostream& operator<<(Ostream&, const coordinateSystem&);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //