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139 lines
5.2 KiB
C++
139 lines
5.2 KiB
C++
// Created on: 1992-04-06
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// Created by: Christian CAILLET
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// Copyright (c) 1992-1999 Matra Datavision
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// Copyright (c) 1999-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _IGESData_IGESReaderTool_HeaderFile
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#define _IGESData_IGESReaderTool_HeaderFile
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#include <Standard.hxx>
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#include <Standard_DefineAlloc.hxx>
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#include <Standard_Handle.hxx>
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#include <Interface_GeneralLib.hxx>
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#include <Interface_ReaderLib.hxx>
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#include <Standard_Integer.hxx>
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#include <IGESData_IGESType.hxx>
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#include <IGESData_ReadStage.hxx>
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#include <Standard_Real.hxx>
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#include <Interface_FileReaderTool.hxx>
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#include <Standard_Boolean.hxx>
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class Interface_ParamList;
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class IGESData_FileRecognizer;
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class Interface_Check;
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class IGESData_IGESReaderData;
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class IGESData_Protocol;
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class Standard_Transient;
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class Interface_InterfaceModel;
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class IGESData_IGESEntity;
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class IGESData_DirPart;
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class IGESData_ParamReader;
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//! specific FileReaderTool for IGES
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//! Parameters are accessed through specific objects, ParamReaders
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class IGESData_IGESReaderTool : public Interface_FileReaderTool
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{
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public:
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DEFINE_STANDARD_ALLOC
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//! creates IGESReaderTool to work with an IGESReaderData and an
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//! IGES Protocol.
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//! Actually, no Lib is used
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Standard_EXPORT IGESData_IGESReaderTool(const Handle(IGESData_IGESReaderData)& reader, const Handle(IGESData_Protocol)& protocol);
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//! binds empty entities to records, works with the Protocol
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//! (from IGESData) stored and later used
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//! RQ : Actually, sets DNum into IGES Entities
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//! Also loads the list of parameters for ParamReader
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Standard_EXPORT void Prepare (const Handle(IGESData_FileRecognizer)& reco);
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//! recognizes records by asking Protocol (on data of DirType)
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Standard_EXPORT Standard_Boolean Recognize (const Standard_Integer num, Handle(Interface_Check)& ach, Handle(Standard_Transient)& ent) Standard_OVERRIDE;
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//! fills model's header, that is, its GlobalSection
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Standard_EXPORT void BeginRead (const Handle(Interface_InterfaceModel)& amodel) Standard_OVERRIDE;
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//! fills an entity, given record no; works by calling ReadDirPart
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//! then ReadParams (with help of a ParamReader), then if required
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//! ReadProps and ReadAssocs, from IGESEntity
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//! Returns True if no fail has been recorded
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Standard_EXPORT Standard_Boolean AnalyseRecord (const Standard_Integer num, const Handle(Standard_Transient)& anent, Handle(Interface_Check)& acheck) Standard_OVERRIDE;
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//! after reading entities, true line weights can be computed
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Standard_EXPORT virtual void EndRead (const Handle(Interface_InterfaceModel)& amodel) Standard_OVERRIDE;
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//! Reads directory part componants from file; DP is the litteral
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//! directory part, IR detains entities referenced by DP
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Standard_EXPORT void ReadDir (const Handle(IGESData_IGESEntity)& ent, const Handle(IGESData_IGESReaderData)& IR, const IGESData_DirPart& DP, Handle(Interface_Check)& ach) const;
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//! Performs Reading of own Parameters for each IGESEntity
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//! Works with the ReaderLib loaded with ReadWriteModules for IGES
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//! In case of failure, tries UndefinedEntity from IGES
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Standard_EXPORT void ReadOwnParams (const Handle(IGESData_IGESEntity)& ent, const Handle(IGESData_IGESReaderData)& IR, IGESData_ParamReader& PR) const;
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//! Reads Property List, if there is (if not, does nothing)
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//! criterium is : current parameter of PR remains inside params
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//! list, and Stage is "Own"
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//! Current parameter must be a positive integer, which value
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//! gives the length of the list; else, a Fail is produced (into
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//! Check of PR) and reading process is stopped
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Standard_EXPORT void ReadProps (const Handle(IGESData_IGESEntity)& ent, const Handle(IGESData_IGESReaderData)& IR, IGESData_ParamReader& PR) const;
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//! Reads Associativity List, if there is (if not, does nothing)
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//! criterium is : current parameter of PR remains inside params
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//! list, and Stage is "Own"
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//! Same conditions as above; in addition, no parameter must be
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//! let after the list once read
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//! Note that "Associated" entities are not declared "Shared"
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Standard_EXPORT void ReadAssocs (const Handle(IGESData_IGESEntity)& ent, const Handle(IGESData_IGESReaderData)& IR, IGESData_ParamReader& PR) const;
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protected:
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private:
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Handle(Interface_ParamList) thelist;
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Handle(IGESData_FileRecognizer) thereco;
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Interface_GeneralLib theglib;
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Interface_ReaderLib therlib;
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Standard_Integer thecnum;
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IGESData_IGESType thectyp;
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IGESData_ReadStage thestep;
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Handle(Interface_Check) thechk;
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Standard_Integer thegradweight;
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Standard_Real themaxweight;
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Standard_Real thedefweight;
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};
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#endif // _IGESData_IGESReaderTool_HeaderFile
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