edgeMesh.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
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     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2011-2014 OpenFOAM Foundation
    Copyright (C) 2017-2021 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/>.
 
Class
    Foam::edgeMesh
 
Description
    Points connected by edges.
 
    Can be read from fileName based on extension. Uses ::New factory method
    to select the reader and transfer the result.
 
SourceFiles
    edgeMeshI.H
    edgeMesh.C
    edgeMeshIO.C
    edgeMeshNew.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_edgeMesh_H
#define Foam_edgeMesh_H
 
#include "pointField.H"
#include "edgeList.H"
#include "dictionary.H"
#include "edgeMeshFormatsCore.H"
#include "runTimeSelectionTables.H"
#include "memberFunctionSelectionTables.H"
#include "HashSet.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward Declarations
class edgeMesh;
 
Istream& operator>>(Istream& is, edgeMesh& em);
Ostream& operator<<(Ostream& os, const edgeMesh& em);
 
/*---------------------------------------------------------------------------*\
                           Class edgeMesh Declaration
\*---------------------------------------------------------------------------*/
 
class edgeMesh
:
    public fileFormats::edgeMeshFormatsCore
{
    // Private Data
 
        //- Vertices of the edges
        pointField points_;
 
        //- The edges defining the boundary
        edgeList edges_;
 
        //- From point to edges
        mutable std::unique_ptr<labelListList> pointEdgesPtr_;
 
 
    // Private Member Functions
 
        //- Calculate point-edge addressing (inverse of edges)
        void calcPointEdges() const;
 
 
protected:
 
    // Protected Member Functions
 
        //- Non-const access to global points
        inline pointField& storedPoints() noexcept;
 
        //- Non-const access to the edges
        inline edgeList& storedEdges() noexcept;
 
 
public:
 
    //- Runtime type information
    TypeName("edgeMesh");
 
 
    // Static Member Functions
 
        //- Summary of supported read file types.
        static wordHashSet readTypes();
 
        //- Summary of supported write file types.
        static wordHashSet writeTypes();
 
        //- Can we read this file format?
        static bool canReadType(const word& fileType, bool verbose=false);
 
        //- Can we write this file format type?
        static bool canWriteType(const word& fileType, bool verbose=false);
 
        //- Can we read this file format?
        static bool canRead(const fileName& name, bool verbose=false);
 
 
    // Constructors
 
        //- Default construct
        inline edgeMesh();
 
        //- Copy construct
        inline edgeMesh(const edgeMesh& em);
 
        //- Move construct
        inline edgeMesh(edgeMesh&& em);
 
        //- Copy construct from components
        inline edgeMesh(const pointField& points, const edgeList& edges);
 
        //- Move construct from components
        inline edgeMesh(pointField&& pointLst, edgeList&& edgeLst);
 
        //- Construct from file name (uses extension to determine type)
        explicit edgeMesh(const fileName& name);
 
        //- Construct from file name with specified type
        edgeMesh(const fileName& name, const word& fileType);
 
 
    // Declare run-time constructor selection table
 
        declareRunTimeSelectionTable
        (
            autoPtr,
            edgeMesh,
            fileExtension,
            (
                const fileName& name
            ),
            (name)
        );
 
 
    // Selectors
 
        //- Read construct from filename with given format
        static autoPtr<edgeMesh> New
        (
            const fileName& name,
            const word& fileType
        );
 
        //- Select constructed from filename (implicit extension)
        static autoPtr<edgeMesh> New(const fileName& name);
 
 
    //- Destructor
    virtual ~edgeMesh() = default;
 
 
    // Member Function Selectors
 
        declareMemberFunctionSelectionTable
        (
            void,
            edgeMesh,
            write,
            fileExtension,
            (
                const fileName& name,
                const edgeMesh& mesh,
                IOstreamOption streamOpt,
                const dictionary& options
            ),
            (name, mesh, streamOpt, options)
        );
 
        //- Write to file (format implicit in the extension)
        static void write
        (
            const fileName& name,
            const edgeMesh& mesh,
            IOstreamOption streamOpt = IOstreamOption(),
            const dictionary& options = dictionary::null
        );
 
        //- Write to file, with given format
        static void write
        (
            const fileName& name,
            const word& fileType,
            const edgeMesh& mesh,
            IOstreamOption streamOpt = IOstreamOption(),
            const dictionary& options = dictionary::null
        );
 
 
    // Member Functions
 
        //- Transfer the contents of the argument and annul the argument
        void transfer(edgeMesh& mesh);
 
 
    // Read
 
        //- Read from file. Chooses reader based on explicit extension
        bool read(const fileName& name, const word& fileType);
 
        //- Read from file. Chooses reader based on detected extension
        virtual bool read(const fileName& name);
 
 
    // Access
 
        //- Return points
        inline const pointField& points() const noexcept;
 
        //- Return edges
        inline const edgeList& edges() const noexcept;
 
        //- Return edges
        inline const labelListList& pointEdges() const;
 
        //- Find connected regions. Set region number per edge.
        //  Returns number of regions.
        label regions(labelList& edgeRegion) const;
 
 
    // Edit
 
        //- Clear all storage
        virtual void clear();
 
        //- Scale points. A non-positive factor is ignored
        virtual void scalePoints(const scalar scaleFactor);
 
        //- Geometric merge points (points within mergeDist) prior to
        //  automatically calling mergeEdges().
        virtual void mergePoints(const scalar mergeDist);
 
        //- Merge duplicate edges and eliminate unused points.
        virtual void mergeEdges();
 
 
    // Write
 
        virtual void writeStats(Ostream&) const;
 
        //- Write to file, choosing writer based on the file extension.
        virtual void write
        (
            const fileName& name,
            IOstreamOption streamOpt = IOstreamOption(),
            const dictionary& options = dictionary::null
        ) const
        {
            write(name, *this, streamOpt, options);
        }
 
        //- Write to file with given format type.
        //  If the format type is "", uses the file extension.
        virtual void write
        (
            const fileName& name,
            const word& fileType,
            IOstreamOption streamOpt = IOstreamOption(),
            const dictionary& options = dictionary::null
        ) const
        {
            write(name, fileType, *this, streamOpt, options);
        }
 
 
    // Member Operators
 
        //- Copy assignment
        inline void operator=(const edgeMesh& rhs);
 
        //- Move assignment
        inline void operator=(edgeMesh&& rhs);
 
 
    // Ostream Operator
 
        friend Ostream& operator<<(Ostream& os, const edgeMesh& em);
        friend Istream& operator>>(Istream& is, edgeMesh& em);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "edgeMeshI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //