coordSetWriter.H

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/*---------------------------------------------------------------------------*\
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-------------------------------------------------------------------------------
    Copyright (C) 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.
 
    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::coordSetWriter
 
Description
    Base class for writing coordSet(s) and tracks with fields.
 
    Example:
    \verbatim
        coordSet coords(...);
 
        // Construct writer of xmgr type
        autoPtr<coordSetWriter> writer(coordSetWriter::New("vtk"));
 
        writer.open(coords, path/name);
 
        writer.write("density", rho);
        writer.write("velocity", U);
 
    \endverbatim
 
SourceFiles
    coordSetWriterI.H
    coordSetWriter.C
    coordSetWriterBuffers.C
    coordSetWriterNew.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_coordSetWriter_H
#define Foam_coordSetWriter_H
 
#include "coordSet.H"
#include "typeInfo.H"
#include "vector.H"
#include "tensor.H"
#include "fileName.H"
#include "wordList.H"
#include "Field.H"
#include "DynamicList.H"
#include "PtrDynList.H"
#include "UPtrList.H"
#include "instant.H"
#include "InfoProxy.H"
#include "runTimeSelectionTables.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// Forward Declarations
class coordSetWriter;
class Time;
 
Ostream& operator<<(Ostream& os, const InfoProxy<coordSetWriter>&);
 
/*---------------------------------------------------------------------------*\
                       Class coordSetWriter Declaration
\*---------------------------------------------------------------------------*/
 
class coordSetWriter
{
protected:
 
    // Protected Data
 
        //- Reference to coordinate set(s)
        UPtrList<const coordSet> coords_;
 
        //- Track times (eg, streamlines), one per coords_ entry
        List<scalarField> trackTimes_;
 
        //- The content is up-to-date?
        mutable bool upToDate_;
 
        //- Track if geometry has been written since the last open
        mutable bool wroteGeom_;
 
 
        //- Writer with buffering output
        mutable bool buffering_;
 
        //- Prefer tracks to points during single set writing
        bool useTracks_;
 
        //- Insert additional time sub-directory in the output path
        bool useTimeDir_;
 
        //- Additional output verbosity
        bool verbose_;
 
        //- The number of fields
        label nFields_;
 
        //- The current time value/name
        instant currTime_;
 
        //- The full output directory and file (coords) name
        fileName outputPath_;
 
 
    // Buffering
 
#undef  defineBufferMethod
#define defineBufferMethod(Type)                                              \
                                                                              \
        /* Names of Type fields */                                            \
        DynamicList<word> Type##Names_;                                       \
                                                                              \
        /* Values of Type fields */                                           \
        PtrDynList<Field<Type>> Type##Fields_;                                \
                                                                              \
        /* Add named Type field to buffering */                               \
        void appendField(const word& fieldName, const Field<Type>& vals)      \
        {                                                                     \
            Type##Names_.append(fieldName);                                   \
            Type##Fields_.append(vals.clone());                               \
        }
 
        defineBufferMethod(label);
        defineBufferMethod(scalar);
        defineBufferMethod(vector);
        defineBufferMethod(sphericalTensor);
        defineBufferMethod(symmTensor);
        defineBufferMethod(tensor);
 
#undef defineBufferMethod
 
    // Protected Member Functions
 
    // Buffering
 
        //- Write line contents (eg, buffered)
        static void writeLine(Ostream&, const UList<word>&, const char* sep);
 
        //- Write line contents (eg, buffered)
        static void writeLine(Ostream&, const UList<scalar>&, const char* sep);
 
        //- Clear out buffering
        void clearBuffers();
 
        //- The number of buffer data columns, after splitting into components
        label nDataColumns() const;
 
        //- Write buffered data
        virtual bool writeBuffered();
 
        //- Write buffered data
        void writeBufferContents
        (
            Ostream& os,
            const coordSet& coords,
            const char* sep
        ) const;
 
        //- Get buffered data line (components)
        void getBufferLine
        (
            DynamicList<scalar>& buf,
            const coordSet& coords,
            const label pointi
        ) const;
 
 
    // File Operations
 
        //- Get expected (characteristic) output file name - information only
        fileName getExpectedPath(const word& fileExt = word::null) const;
 
        //- Get field-prefixed output file name.
        //  Eg, dir/U_name.raw
        fileName getFieldPrefixedPath
        (
            const word& fieldName,
            const word& fileExt = word::null
        ) const;
 
        //- Verify that the outputPath_ has been set or FatalError
        void checkOpen() const;
 
        //- Perform any merging if not already upToDate (parallel)
        //- or simply mark as being up-to-date
        virtual bool merge() const;
 
 
    // Helpers
 
        //- Repackage field into a UPtrList
        template<class Type>
        static UPtrList<const Field<Type>>
        repackageFields
        (
            const Field<Type>& field
        );
 
        //- Repackage multiple fields into a UPtrList
        template<class Type>
        static UPtrList<const Field<Type>>
        repackageFields
        (
            const UList<Field<Type>>& fieldValues
        );
 
        //- Write coordinates and values
        template<class Type>
        static void writeTable
        (
            Ostream& os,
            const coordSet& coords,
            const UList<Type>& values,
            const char* sep
        );
 
 
    // Normal write templates
 
        //- Dummy templated write operation
        template<class Type>
        fileName writeTemplate
        (
            const word& fieldName,          
            const Field<Type>& values       
        )
        {
            return fileName::null;
        }
 
        //- Dummy templated write operation. Multiple tracks
        template<class Type>
        fileName writeTemplate
        (
            const word& fieldName,
            const List<Field<Type>>& fieldValues
        )
        {
            return fileName::null;
        }
 
 
        //- No copy construct
        coordSetWriter(const coordSetWriter&) = delete;
 
        //- No copy assignment
        void operator=(const coordSetWriter&) = delete;
 
 
public:
 
    //- Runtime type information
    TypeName("coordSetWriter");
 
        // Declare run-time constructor selection table
        declareRunTimeSelectionTable
        (
            autoPtr,
            coordSetWriter,
            word,
            (),
            ()
        );
 
        declareRunTimeSelectionTable
        (
            autoPtr,
            coordSetWriter,
            wordDict,
            (
                const dictionary& writeOptions
            ),
            (writeOptions)
        );
 
 
    // Selectors
 
        //- True if New is likely to succeed for this writeType
        static bool supportedType(const word& writeType);
 
        //- Return a reference to the selected writer
        static autoPtr<coordSetWriter> New(const word& writeFormat);
 
        //- Return a reference to the selected writer
        //  Select with extra write option
        static autoPtr<coordSetWriter> New
        (
            const word& writeFormat,
            const dictionary& writeOptions
        );
 
 
    // Constructors
 
        //- Default construct
        coordSetWriter();
 
        //- Default construct with specified options
        explicit coordSetWriter(const dictionary& options);
 
 
    //- Destructor. Calls close()
    virtual ~coordSetWriter();
 
 
    // Member Functions
 
    // Helpers
 
        //- Name suffix based on fieldName (underscore separator)
        static word suffix
        (
            const word& fldName,
            const word& fileExt = word::null
        );
 
        //- Name suffix based on fieldNames (underscore separator)
        static word suffix
        (
            const wordList& fieldNames,
            const word& fileExt = word::null
        );
 
 
    // Capability
 
        //- True if the format uses internal buffering (eg, column output)
        virtual bool buffering() const;
 
        //- Turn internal buffering on/off (only if supported by the writer)
        virtual bool buffering(const bool on);
 
        //- The writer is enabled. If the writer is not enabled, it may be
        //- possible for the caller to skip various preparatory operations.
        //  This method is primarily useful for the null writer
        virtual bool enabled() const
        {
            return true;
        }
 
 
    // Bookkeeping
 
        //- Does the writer need an update (eg, lagging behind other changes)
        virtual bool needsUpdate() const;
 
        //- Geometry or fields written since the last open?
        virtual bool wroteData() const;
 
        //- Mark that content changed and the writer will need an update,
        //- and set nFields = 0.
        //  May also free up unneeded data.
        //  Return false if it was previously already expired.
        virtual bool expire();
 
        //- Close any open output, remove coordSet associations and
        //- expire the writer.
        virtual void clear();
 
 
    // Content Association
 
        //- Set coordinates, can also be nullptr
        virtual void setCoordinates(const coordSet* coords);
 
        //- Set coordinates
        virtual void setCoordinates(const coordSet& coords);
 
        //- Set track coordinates
        virtual void setTracks(const UPtrList<coordSet>& tracks);
 
        //- Set track times
        virtual void setTrackTimes(const UList<scalarField>& times);
 
 
    // Queries, Access
 
        //- The number of associated points (local processor)
        label numPoints() const;
 
        //- The number of coordinate tracks
        label numTracks() const;
 
        //- Writer is associated with content
        bool hasCoords() const;
 
        //- Writer is not associated with content
        bool empty() const;
 
        //- Test if outputPath has been set
        inline bool is_open() const noexcept;
 
        //- The number of expected output fields.
        //  Currently only used by the legacy VTK format.
        inline label nFields() const noexcept;
 
        //- Set the number of expected output fields
        //  Currently only used by the legacy VTK format.
        //  \return old value
        inline label nFields(const label n) noexcept;
 
        //- Prefer tracks to points during single set writing
        inline bool useTracks() const noexcept;
 
        //- Enable/disable tracks preference
        //  \return old value
        inline bool useTracks(const bool on) noexcept;
 
        //- Should a time directory be spliced into the output path?
        inline bool useTimeDir() const noexcept;
 
        //- Enable/disable use of spliced output path
        //  \return old value
        inline bool useTimeDir(const bool on) noexcept;
 
        //- Get output verbosity
        inline bool verbose() const noexcept;
 
        //- Enable/disable verbose output
        //  \return old value
        inline bool verbose(bool on) noexcept;
 
 
    // Time
 
        //- True if there is a known time
        inline bool hasTime() const;
 
        //- The current time value/name
        inline const word& timeName() const;
 
        //- The current time value/name
        inline scalar timeValue() const;
 
 
        //- Set the current time
        void setTime(const instant& inst);
 
        //- Set current time from timeValue, auto generating the name
        void setTime(scalar timeValue);
 
        //- Set current time from timeValue and timeName
        void setTime(scalar timeValue, const word& timeName);
 
        //- Clear the current time
        void unsetTime();
 
 
        //- Begin a time-step
        virtual void beginTime(const Time& t);
 
        //- Begin a time-step
        virtual void beginTime(const instant& inst);
 
        //- End a time-step
        virtual void endTime();
 
 
    // Output
 
        //- Expected (characteristic) output file name - information only.
        //- Return empty when is_open() is false.
        virtual fileName path() const = 0;
 
        //- Write separate geometry to file.
 
        //- Open for output on specified path, using existing content
        virtual void open(const fileName& outputPath);
 
        //- Open from components
        virtual void open
        (
            const coordSet& coords,
            const fileName& outputPath
        );
 
        //- Open from components
        virtual void open
        (
            const UPtrList<coordSet>& tracks,
            const fileName& outputPath
        );
 
        //- Finish output, performing any necessary cleanup
        //  Optional force disassociation with any coordSet(s)
        virtual void close(bool force = false);
 
 
    // Other
 
        //- Return info proxy.
        virtual InfoProxy<coordSetWriter> info() const
        {
            return *this;
        }
 
        //- Output info proxy
        friend Ostream& operator<<
        (
            Ostream& os,
            const InfoProxy<coordSetWriter>& ip
        );
 
 
    // Write methods
 
#undef  declareCoordSetWriterWriteMethod
#define declareCoordSetWriterWriteMethod(Type)                                 \
                                                                               \
                         \
        virtual fileName write                                                 \
        (                                                                      \
            const word& fieldName,                        \
            const Field<Type>& field                       \
        ) = 0;                                                                 \
                                                                               \
                  \
        virtual fileName write                                                 \
        (                                                                      \
            const word& fieldName,                        \
            const List<Field<Type>>& fieldValues       \
        ) = 0;
 
        declareCoordSetWriterWriteMethod(label);
        declareCoordSetWriterWriteMethod(scalar);
        declareCoordSetWriterWriteMethod(vector);
        declareCoordSetWriterWriteMethod(sphericalTensor);
        declareCoordSetWriterWriteMethod(symmTensor);
        declareCoordSetWriterWriteMethod(tensor);
 
 
#undef  declareCoordSetWriterWriteMethod
#define declareCoordSetWriterWriteMethod(Type)                                 \
                                                                               \
                         \
        virtual fileName write                                                 \
        (                                                                      \
            const word& fieldName,                        \
            const Field<Type>& values                      \
        );  /* override */                                                     \
                                                                               \
                  \
        virtual fileName write                                                 \
        (                                                                      \
            const word& fieldName,                        \
            const List<Field<Type>>& fieldValues       \
        ); /* override */
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "coordSetWriterI.H"
 
#ifdef NoRepository
    #include "coordSetWriterTemplates.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //