ISO 14739-1:2014

Document management — 3D use of Product Representation Compact (PRC) format — Part 1: PRC 10001

ISO 14739-1:2014 describes PRC 10001 of a product representation compact (PRC) file format for three dimensional (3D) content data. This format is designed to be included in PDF (ISO 32000) and other similar document formats for the purpose of 3D visualization and exchange. It can be used for creating, viewing, and distributing 3D data in document exchange workflows. It is optimized to store, load, and display various kinds of 3D data, especially that coming from computer aided design (CAD) systems. This International Standard does not apply to: Method of electronic distribution Converting CAD system generated datasets to the PRC format Specific technical design, user interface, implementation, or operational details of rendering Required computer hardware and/or operating systems

Gestion de documents — Utilisation en 3D du format compact de représentation de produit (PRC) — Partie 1: PRC 10001

General Information

• Status: Published
• Publication Date: 14-Dec-2014
• ICS: 35.240.30 - IT applications in information, documentation and publishing
• Technical Committee: ISO/TC 171/SC 2 - Document file formats, EDMS systems and authenticity of information
• Drafting Committee: ISO/TC 171/SC 2 - Document file formats, EDMS systems and authenticity of information
• Current Stage: 9093 - International Standard confirmed

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 14739-1
First edition
2014‐12‐15
Document management — 3D use of
Product Representation Compact (PRC)
format —
Part 1:
PRC 10001
Gestion de documents — Utilisation en 3D du format compact de
représentation de produit (PRC) —
Partie 1: PRC 10001
Reference number
ISO 14739‐1:2014(E)
©
ISO 2014
©  ISO 2014
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any
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ii © ISO 2014 – All rights reserved

Contents Page
Contents  . iii
Foreword . v
1  Scope . 1
2  Normative references . 1
3  Terms and definitions . 2
4  Document syntax conventions . 2
4.1  Conventions . 2
4.2  Example Structure . 2
5  PRC file concepts . 3
5.1  The PRC file . 3
5.2  Versioning . 5
5.3  Unique identifiers . 6
5.4  Current data values . 7
5.5  Userdata . 7
5.6  Units . 8
5.7  Tolerances . 8
5.8  Compressed file sections . 9
5.9  Compressed geometry . 9
5.10  Compressed tessellation . 9
6  PRC file contents . 9
6.1  Fileheader . 9
6.2  Filestructure . 11
6.3  PRC Schema . 13
7  PRC basic types . 13
7.1  General . 13
7.2  Uncompressed types . 14
7.3  Compressed types . 15
8  Base entities . 21
8.1  General . 21
8.2  Abstract root types . 21
8.3  Structure and assembly . 25
8.4  Miscellaneous Data . 45
8.5  Gra phics . 56
8.6  Representation items . 72
8.7  Mark up . 77
8.8  Tessellation . 83
8.9  Topology . 114
8.10  Curve . 150
8.11  Surface . 182
8.12  Mathematical O pe rato r . 209
9  Schema Definition . 213
9.1  General . 213
9.2  Enumeration Of Schema Tokens . 214
© ISO 2014 – All rights reserved iii

9.3  Schema Processing . 216
9.4  Schema Requirements and Examples . 222
10  I/O Algorithms . 225
10.1  Getnumberofbitsusedtostoreunsignedinteger . 225
10.2  Makeportable32bitsunsigned . 225
10.3  Writebits . 225
10.4  Writestring . 226
10.5  Writefloatasbytes. 226
10.6  Writecharact erar ray . 227
10.7  Writeshortarray . 228
10.8  Writecompressedintegerarray . 229
10.9  Writecompressedindicearray . 229
10.10  Writeunsignedinteger . 230
10.11  Writeinteger . 230
10.12  Writeintegerwithvariablebitnumber . 230
10.13  Writeunsignedintegerwithvariablebitnumber . 231
10.14  Writedoublewithvariablebitnumber . 231
10.15  Writenumberofbitsthenunsignedinteger . 232
10.16  Writecompressedentitytype . 232
10.17  Writedouble . 233
10.18  Procedure For Writedouble . 270
11  Tessellation Compression Support . 274
11.1  Genera l . 274
11.2  Huffman Algorithm. 275
11.3  Basis Pseudocode . 277
Annex A (informative) Example: Triangle . 281
Annex B (informative) List of figures and tables . 283
Bibliography . 284
iv © ISO 2014 – All rights reserved

Foreword
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standards bodies (ISO member bodies). The work of preparing International Standards is normally
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matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
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assessment, as well as information about ISO's adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword ‐ Supplementary information
The committee responsible for this document is ISO/TC 171, Document management applications,
Subcommittee SC 2, Application issues.
© ISO 2014 – All rights
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