ISO INTERNATIONAL STANDARD 10303-55 First edition 2005-02-01 Industrial automation systems Product data representation and exchange Part 55: Integrated generic resource: Procedural and hybrid representation Systemes d'automatisation industrielle Representation et échange de données de produits - Partie 55: Ressources génériques intégrées-Représentation procédurale et hybride Reference number ISO 10303-55:2005(E) @ ISO 2005 Copyright International Organization for Standardization ted without license from IHS Not for Resale ISO10303-55:2005(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademarkof AdobeSystems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below ?ISO2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland yrgheatgazatiooSndadizati @ISO2005-All rights reserved ted without license from IHS Not for Resale ISO 10303-55:2005(E) Contents Page 1 Scope 1 2 Normative references 2 3 Terms, definitions and abbreviations 2 3.1 Terms defined in ISO 10303-1 2 3.2 Terms defined in ISO 10303-11 3 3.3 Terms defined in ISO 10303-42 3 3.4 Terms defined in ISO 10303-43 3 3.5 Terms defined in ISO 10303-108 4 3.6 Other terms and definitions 5 3.7 Abbreviations 5 4 Procedural model 6 4.1 Introduction 6 4.2 Fundamental concepts and assumptions 6 4.2.1 Procedural models 4.2.2 Hybrid models 8 4.2.3 Explicit selected elements 8 4.2.4 Dual models 9 4.2.5 Representation of constructional operations in procedural models 10 4.2.6 Implicit and explicit constraints 11 4.2.7 Suppression of constructional operations 12 4.2.8 Exchange of procedural and hybrid models 12 4.2.9 Variational cases of procedural and hybrid models 12 4.3 Procedural model entity definitions 13 4.3.1 explicit_procedural_representation_relationship 13 4.3.2 explicit_procedural_representation_item_relationship 14 4.3.3 procedural_representation 15 4.3.4 procedural_representation_ sequence 16 4.3.5 user_selected_elements 17 4.3.6 indirectly_selected_elements 18 5 Procedural shape model . 20 5.1 Introduction 20 5.2 Fundamental concepts and assumptions 20 5.2.1 Procedural shape models . 21 5.2.2 Hybrid shape models . 22 5.2.3 Explicit selected elements in a shape model 22 5.2.4 Dual shape representations . 22 5.2.5 Design rationale for shape models 22 5.3 Procedural shape model type definitions 23 5.3.1 shape_representation_item 23 5.4 Procedural shape model entity definitions 23 5.4.1 explicit_procedural_shape_representation_ relationship 23 5.4.2 explicit_procedural_geometric_representation item relationship 24 5.4.3 procedural_shape_representation . : : 25 5.4.4 procedural_shape_representation_ sequence 25 5.4.5 procedural_solid_representation_ sequence 26 @ISO2005 All rights reserved ii Copyright Intemational Organization for Standardization Not for Resale ISO10303-55:2005(E) 5.4.6 procedural_surface_representation_ sequence 27 5.4.7 procedural_wireframe_representation_ sequence 28 5.4.8 user_selected_shape_elements 28 5.4.9 indirectly_selected_shape_elements 29 Annex A (normative) Short names of entities 31 Annex B (normative) Information ob