ISO INTERNATIONAL STANDARD 25178-72 First edition 2017-05 Geometrical product specifications (GPS) Surface texture: Areal - Part 72: XML file format x3p Speécification géomeétrique des produits (GPS) - Etat de surface: Surfacique- Partie 72: Format de fichier XML x3p Reference number IS0 25178-72:2017(E) International Organization for Standardization @ IS0 2017 ZHEJIANG INSTOFSTANDARDIZATION C15956617 ted without license from IHS IS0 25178-72:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS02017,PublishedinSwitzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +4122 749 09 47 [email protected] www.iso.org Intenationai br PrganizationforStandardization icensee-ZHEJIANG INST OF STANDARDIZRoISQ s1.7 - All rights reserved I by IHS unde Not for Resale, 2017/8/21 02:42:1 etworking permitted without license from IHS IS0 25178-72:2017(E) Contents Page Foreword ..iv Introduction. 1 Scope. 2 Normative references 3 Terms and definitions 4 Requirements 4.1 Units .4 4.2 Recommended offset value ..4 5 x3p file format. ..4 5.1 General. 4 5.2 File name extension 5.3 Minimum contents of zip-container 4 5.4 Optional contents of zip-container. 4 5.4.1 General. 4 5.4.2 Binary encoded coordinates .5 5.4.3 Validity mask. 5 5.4.4 Vendor specific extensions .5 5.5 Contents and format of main.xml. 5 5.5.1 General. 5 5.5.2 Main records .5 5.5.3 Record1: Header, data types, and axes definitions .5 5.5.4 Record2: Meta data. 5.5.5 Record3: 3D point data .10 5.5.6 Record4:Checksuminformation ..14 5.5.7 Vendor specific extensions. .14 Annex A (informative) XML file format ..15 Annex B (informative) Sample main.xml ..20 Annex C (informative) Relation with the GPS matrix ..22 Bibliography .23 iii See=ZHEJIANG INSTOFSTANDARDIZATION C15956617 vided by IHS under lic withoutlicense from IHS Not for Resale, 2017/8/21 02:42:11