blockEdge.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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-------------------------------------------------------------------------------
    Copyright (C) 2011-2016 OpenFOAM Foundation
    Copyright (C) 2019-2021 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.
 
    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/>.
 
Namespace
    Foam::blockEdges
 
Description
    A namespace for various blockEdge types.
 
Class
    Foam::blockEdge
 
Description
    Define a curved edge that is parameterized for 0<lambda<1
    between the start/end points.
 
SourceFiles
    blockEdge.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_blockEdge_H
#define Foam_blockEdge_H
 
#include "searchableSurfaces.H"
#include "edge.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward Declarations
class blockEdge;
Ostream& operator<<(Ostream& os, const blockEdge& e);
 
/*---------------------------------------------------------------------------*\
                         Class blockEdge Declaration
\*---------------------------------------------------------------------------*/
 
class blockEdge
{
protected:
 
    // Protected Data
 
        //- The referenced point field
        const pointField& points_;
 
        //- Index of the first point
        const label start_;
 
        //- Index of the last point
        const label end_;
 
 
protected:
 
    // Protected Member Functions
 
        //- Return a complete point field by appending the start/end points
        //- to the given list
        //  \deprecated(2020-10) use polyLine::concat
        static pointField appendEndPoints
        (
            const pointField& p,        
            const label from,           
            const label to,             
            const pointField& intermediate  
        );
 
        //- Construct from components
        //  \deprecated(2021-11) use constructor with edge
        blockEdge
        (
            const pointField& points,   
            const label from,           
            const label to              
        )
        :
            blockEdge(points, edge(from,to))
        {}
 
public:
 
    //- Runtime type information
    TypeName("blockEdge");
 
    // Declare run-time constructor selection tables
 
        declareRunTimeSelectionTable
        (
            autoPtr,
            blockEdge,
            Istream,
            (
                const dictionary& dict,
                const label index,
                const searchableSurfaces& geometry,
                const pointField& points,
                Istream& is
            ),
            (dict, index, geometry, points, is)
        );
 
 
    // Constructors
 
        //- Construct from components
        blockEdge
        (
            const pointField& points,   
            const edge& fromTo          
        );
 
        //- Construct from Istream and point field.
        blockEdge
        (
            const dictionary& dict,
            const label index,
            const pointField& points,   
            Istream& is
        );
 
        //- Clone function
        virtual autoPtr<blockEdge> clone() const;
 
        //- New function which constructs and returns pointer to a blockEdge
        static autoPtr<blockEdge> New
        (
            const dictionary& dict,
            const label index,
            const searchableSurfaces& geometry,
            const pointField& points,
            Istream& is
        );
 
        //- Class used for the read-construction of
        //  PtrLists of blockEdge
        class iNew
        {
            const dictionary& dict_;
            const searchableSurfaces& geometry_;
            const pointField& points_;
            mutable label index_;
 
        public:
 
            iNew
            (
                const dictionary& dict,
                const searchableSurfaces& geometry,
                const pointField& points
            )
            :
                dict_(dict),
                geometry_(geometry),
                points_(points),
                index_(0)
            {}
 
            autoPtr<blockEdge> operator()(Istream& is) const
            {
                return blockEdge::New(dict_, index_++, geometry_, points_, is);
            }
        };
 
 
    //- Destructor
    virtual ~blockEdge() = default;
 
 
    // Member Functions
 
        //- True if first/last indices are unique and non-negative.
        inline bool good() const noexcept;
 
        //- Same as good()
        bool valid() const noexcept { return good(); }
 
        //- Index of start (first) point
        inline label start() const noexcept;
 
        //- Index of end (last) point
        inline label end() const noexcept;
 
        //- The location of the first point
        inline const point& firstPoint() const;
 
        //- The location of the last point
        inline const point& lastPoint() const;
 
 
        //- Compare the given start/end points with this block edge
        //  Return:
        //  -  0: different
        //  - +1: identical
        //  - -1: same edge, but different orientation
        inline int compare(const blockEdge& e) const;
 
        //- Compare the given start/end points with this block edge
        //  Return:
        //  -  0: different
        //  - +1: identical
        //  - -1: same edge, but different orientation
        inline int compare(const edge& e) const;
 
        //- Compare the given start/end points with this block edge
        //  Return:
        //  -  0: different
        //  - +1: identical
        //  - -1: same edge, but different orientation
        inline int compare(const label start, const label end) const;
 
 
        //- The point position in the straight line
        //  0 <= lambda <= 1
        inline point linearPosition(const scalar lambda) const;
 
        //- The point position corresponding to the curve parameter
        //  0 <= lambda <= 1
        virtual point position(const scalar lambda) const = 0;
 
        //- The point positions corresponding to the curve parameters
        //  0 <= lambda <= 1
        virtual tmp<pointField> position(const scalarList& lambdas) const;
 
        //- The length of the curve
        virtual scalar length() const = 0;
 
        //- Write edge with variable back-substitution
        void write(Ostream& os, const dictionary& dict) const;
 
 
    // Ostream Operator
 
        friend Ostream& operator<<(Ostream& os, const blockEdge& e);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "blockEdgeI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //