cylindrical.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::cylindrical
 
Description
    A local coordinate rotation.
 
    The rotational field can be created in two ways:
      -# Each rotational tensor is defined with two vectors (\c dir and \c axis)
         where <tt>dir = point - origin</tt> and \c axis is the rotation axis.
          Per each point an axesRotation type of rotation is created
          (cylindrical coordinates). For example:
          \verbatim
          cylindrical
          {
              type        localAxes;
              axis          (0 0 1);
          }
          \endverbatim
 
      -# The rotational tensor field is provided at construction.
 
SourceFiles
    cylindrical.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef cylindrical_H
#define cylindrical_H
 
#include "point.H"
#include "vector.H"
#include "coordinateRotation.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                         Class cylindrical Declaration
\*---------------------------------------------------------------------------*/
 
class cylindrical
:
    public coordinateRotation
{
    // Private Data
 
        //- AutoPtr to transformation tensor
        autoPtr<tensorField> Rptr_;
 
        //- Origin of the coordinate system
        point origin_;
 
        //- Rotation axis
        vector axis_;
 
 
    // Private members
 
        //- Return the local transformation tensor
        //  corresponding to the given point
        tensor R(const vector& p) const;
 
        //- Initialise transformation tensor field for given points
        void init(const UList<vector>& points);
 
 
public:
 
    //- Runtime type information
    TypeName("cylindrical");
 
    // Constructors
 
        //- Construct from components for list of points
        cylindrical
        (
            const vector& axis,
            const point& origin,
            const UList<vector>& points
        );
 
        //- Construct from dictionary
        cylindrical(const dictionary&);
 
        //- Construct from dictionary
        cylindrical(const dictionary&, const UList<vector>& points);
 
        //- Return clone
        virtual autoPtr<coordinateRotation> clone() const
        {
            return autoPtr<coordinateRotation>(new cylindrical(*this));
        }
 
 
    //- Destructor
    virtual ~cylindrical()
    {}
 
 
    // Member Functions
 
        //- Update the rotation for a list of points
        virtual void updatePoints(const UList<vector>& points);
 
        //- Return local-to-global transformation tensor
        virtual const tensor& R() const
        {
            NotImplemented;
            return tensor::zero;
        }
 
        //- Return local Cartesian x-axis in global coordinates
        virtual const vector e1() const
        {
            NotImplemented;
            return vector::zero;
        }
 
        //- Return local Cartesian y-axis in global coordinates
        virtual const vector e2() const
        {
            NotImplemented;
            return vector::zero;
        }
 
        //- Return local Cartesian z-axis in global coordinates
        virtual const vector e3() const
        {
            return axis_;
        }
 
        //- Return local Cartesian z-axis in global coordinates
        virtual const vector axis() const
        {
            return axis_;
        }
 
        //- Return if the rotation is uniform
        virtual bool uniform() const
        {
            return false;
        }
 
        //- Transform vector using transformation tensor
        virtual vector transform(const vector& v) const;
 
        //- Transform vectorField using transformation tensor field
        virtual tmp<vectorField> transform(const vectorField& tf) const;
 
        //- Transform vector using transformation tensor for component
        virtual vector transform(const vector& v, const label cmptI) const;
 
        //- Inverse transform vector using transformation tensor
        virtual vector invTransform(const vector& v) const;
 
        //- Inverse transform vectorField using transformation tensor field
        virtual tmp<vectorField> invTransform(const vectorField& vf) const;
 
        //- Inverse transform vector using transformation tensor for component
        virtual vector invTransform(const vector& v, const label cmptI) const;
 
        //- Transform tensor using transformation tensorField
        virtual tensor transform(const vector& p, const tensor& t) const;
 
        //- Transform tensor field using transformation tensorField
        virtual tmp<tensorField> transform(const tensorField& tf) const;
 
        //- Transform diagTensor masquerading as a vector using transformation
        //  tensor and return symmTensor
        virtual symmTensor transformDiagTensor
        (
            const vector& p,
            const vector& v
        ) const;
 
        //- Transform diagTensorField masquerading as a vectorField
        //  using transformation tensorField and return symmTensorField
        virtual tmp<symmTensorField> transformDiagTensor
        (
            const vectorField& vf
        ) const;
 
 
    // Write
 
        //- Write
        virtual void write(Ostream&) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //