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License statement text corrected; compiler warnings caused by Bison 2.41 disabled for MSVC; a few other compiler warnings on 54-bit Windows eliminated by appropriate type cast Wrong license statements corrected in several files. Copyright and license statements added in XSD and GLSL files. Copyright year updated in some files. Obsolete documentation files removed from DrawResources.
110 lines
4.8 KiB
Plaintext
110 lines
4.8 KiB
Plaintext
-- 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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class IGESReaderTool from IGESData inherits FileReaderTool
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---Purpose : specific FileReaderTool for IGES
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-- Parameters are accessed through specific objects, ParamReaders
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uses Integer, Boolean, Transient,
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Check, InterfaceModel, GeneralLib, ReaderLib, ParamList,
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IGESReaderData, Protocol from IGESData, FileRecognizer,
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IGESType, IGESEntity, DirPart, ReadStage, ParamReader
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is
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Create (reader : mutable IGESReaderData; protocol : Protocol from IGESData)
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returns IGESReaderTool;
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---Purpose : 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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-- -- General -- --
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Prepare (me : in out; reco : mutable FileRecognizer);
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---Purpose : 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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Recognize (me : in out; num : Integer;
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ach : in out Check; ent : out mutable Transient)
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returns Boolean;
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---Purpose : recognizes records by asking Protocol (on data of DirType)
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-- Loading the IGESModel --
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BeginRead (me : in out; amodel : mutable InterfaceModel);
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---Purpose : fills model's header, that is, its GlobalSection
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AnalyseRecord (me : in out;
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num : Integer; anent : mutable Transient; acheck : in out Check)
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returns Boolean;
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---Purpose : 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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EndRead (me : in out; amodel : mutable InterfaceModel) is redefined;
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---Purpose : after reading entities, true line weights can be computed
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-- For each IGESEntity --
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ReadDir (me; ent : mutable IGESEntity; IR : IGESReaderData;
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DP : DirPart; ach : in out Check);
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---Purpose : 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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ReadOwnParams (me; ent : mutable IGESEntity;
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IR : IGESReaderData; PR : in out ParamReader);
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---Purpose : 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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ReadProps (me; ent : mutable IGESEntity; IR : IGESReaderData;
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PR : in out ParamReader);
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---Purpose : 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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ReadAssocs (me; ent : mutable IGESEntity; IR : IGESReaderData;
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PR : in out ParamReader);
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---Purpose : 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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fields
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thelist : ParamList; -- (loaded once, allows optimization)
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thereco : FileRecognizer;
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theglib : GeneralLib;
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therlib : ReaderLib;
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thecnum : Integer; -- current entity number for recognize
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thectyp : IGESType; -- its IGESType (for purpose of optimization)
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thestep : ReadStage; -- to continue an interrupted party
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thechk : Check; -- check on header (kept by IGESModel)
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thegradweight : Integer;
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themaxweight : Real;
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thedefweight : Real;
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end IGESReaderTool;
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