STLAsciiParse.H

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/*--------------------------------*- C++ -*----------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | www.openfoam.com
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-------------------------------------------------------------------------------
    Copyright (C) 2018 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::Detail::STLAsciiParse
 
Description
    Internal class used when parsing STL ASCII format
 
SourceFiles
    STLAsciiParse.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef STLAsciiParse_H
#define STLAsciiParse_H
 
#include "DynamicList.H"
#include "HashTable.H"
#include "STLpoint.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace Detail
{
 
/*---------------------------------------------------------------------------*\
                    Class Detail::STLAsciiParse Declaration
\*---------------------------------------------------------------------------*/
 
class STLAsciiParse
{
protected:
 
    // Protected Data
 
        bool  sorted_;
        label groupId_;      // The current solid group
        label lineNum_;
 
        //- The number of local points on the current facet
        int nFacetPoints_;
 
        //- Current vertex component when reading 'vertex'
        int nVertexCmpt_;
 
        //- Scratch space for reading 'vertex'
        STLpoint currVertex_;
 
        DynamicList<STLpoint> points_;
        DynamicList<label> facets_;
        DynamicList<word>  names_;
        DynamicList<label> sizes_;
        HashTable<label>   nameLookup_;
 
 
    // Protected Member Functions
 
        //- Action when entering 'solid'
        inline void beginSolid(word solidName);
 
        //- Action when entering 'facet'
        inline void beginFacet();
 
        //- Reset vertex component to zero
        inline void resetVertex();
 
        //- Add next vertex component. On each third call, adds the point.
        //  \return true when point has been added (on the last component)
        inline bool addVertexComponent(float val);
 
        //- Add next vertex component. On each third call, adds the point.
        //  \return true when point has been added (on the last component)
        inline bool addVertexComponent(const char* text);
 
        //- Action on 'endfacet'
        inline void endFacet();
 
 
        //- No copy construct
        STLAsciiParse(const STLAsciiParse&) = delete;
 
        //- No copy assignment
        void operator=(const STLAsciiParse&) = delete;
 
 
public:
 
    // Constructors
 
        //- From input stream and the approximate number of vertices in the STL
        inline STLAsciiParse(const label approxNpoints);
 
 
    // Member Functions
 
        //- Reset stored values
        inline void clear();
 
        //- Do all the solid groups appear in order?
        inline bool sorted() const;
 
        //- A list of unstitched triangle points
        inline DynamicList<STLpoint>& points();
 
        //- A list of facet IDs (group IDs)
        //- corresponds to the number of triangles
        inline DynamicList<label>& facets();
 
        //- Solid names in the order of their appearance.
        inline DynamicList<word>& names();
 
        //- Solid sizes in the order of their appearance.
        inline DynamicList<label>& sizes();
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Detail
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "STLAsciiParseI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //