Vector.H

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    Copyright (C) 2011-2016 OpenFOAM Foundation
    Copyright (C) 2018-2022 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.
 
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    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::Vector
 
Description
    Templated 3D Vector derived from VectorSpace adding construction from
    3 components, element access using x(), y() and z() member functions and
    the inner-product (dot-product) and cross product operators.
 
    A centre() member function which returns the Vector for which it is called
    is defined so that point which is a typedef to Vector<scalar> behaves as
    other shapes in the shape hierarchy.
 
SourceFiles
    VectorI.H
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_Vector_H
#define Foam_Vector_H
 
#include "contiguous.H"
#include "VectorSpace.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward Declarations
template<class T> class List;
 
/*---------------------------------------------------------------------------*\
                           Class Vector Declaration
\*---------------------------------------------------------------------------*/
 
template<class Cmpt>
class Vector
:
    public VectorSpace<Vector<Cmpt>, Cmpt, 3>
{
public:
 
    // Typedefs
 
        //- Equivalent type of labels used for valid component indexing
        typedef Vector<label> labelType;
 
 
    // Member Constants
 
        //- Rank of Vector is 1
        static constexpr direction rank = 1;
 
 
    //- Component labeling enumeration
    enum components { X, Y, Z };
 
 
    // Generated Methods
 
        //- Default construct
        Vector() = default;
 
        //- Copy construct
        Vector(const Vector&) = default;
 
        //- Copy assignment
        Vector& operator=(const Vector&) = default;
 
 
    // Constructors
 
        //- Construct initialized to zero
        inline Vector(const Foam::zero);
 
        //- Copy construct from VectorSpace of the same rank
        template<class Cmpt2>
        inline Vector(const VectorSpace<Vector<Cmpt2>, Cmpt2, 3>& vs);
 
        //- Construct from three components
        inline Vector(const Cmpt& vx, const Cmpt& vy, const Cmpt& vz);
 
        //- Construct from Istream
        inline explicit Vector(Istream& is);
 
 
    // Member Functions
 
        //- Access to the vector x component
        inline const Cmpt& x() const;
 
        //- Access to the vector y component
        inline const Cmpt& y() const;
 
        //- Access to the vector z component
        inline const Cmpt& z() const;
 
        //- Access to the vector x component
        inline Cmpt& x();
 
        //- Access to the vector y component
        inline Cmpt& y();
 
        //- Access to the vector z component
        inline Cmpt& z();
 
        //- Inplace normalise the vector by its magnitude
        //  For small magnitudes (less than ROOTVSMALL) set to zero.
        //  Will not be particularly useful for a vector of labels
        inline Vector<Cmpt>& normalise(const scalar tol = ROOTVSMALL);
 
        //- Inplace removal of components that are collinear to the given
        //- unit vector.
        inline Vector<Cmpt>& removeCollinear(const Vector<Cmpt>& unitVec);
 
 
        //- Return *this (used for point which is a typedef to Vector<scalar>.
        inline const Vector<Cmpt>& centre
        (
            const Foam::UList<Vector<Cmpt>>&  /* (unused) */
        ) const;
};
 
 
// * * * * * * * * * * * * * * * * * Traits  * * * * * * * * * * * * * * * * //
 
//- Data are contiguous if component type is contiguous
template<class Cmpt>
struct is_contiguous<Vector<Cmpt>> : is_contiguous<Cmpt> {};
 
//- Data are contiguous label if component type is label
template<class Cmpt>
struct is_contiguous_label<Vector<Cmpt>> : is_contiguous_label<Cmpt> {};
 
//- Data are contiguous scalar if component type is scalar
template<class Cmpt>
struct is_contiguous_scalar<Vector<Cmpt>> : is_contiguous_scalar<Cmpt> {};
 
 
template<class Cmpt>
class typeOfRank<Cmpt, 1>
{
public:
 
    typedef Vector<Cmpt> type;
};
 
 
template<class Cmpt>
class symmTypeOfRank<Cmpt, 1>
{
public:
 
    typedef Vector<Cmpt> type;
};
 
 
template<class Cmpt>
class typeOfSolve<Vector<Cmpt>>
{
public:
 
    typedef Vector<solveScalar> type;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "VectorI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //