INTERNATIONAL STANDARD ISO 10303-111:2007 TECHNICAL CORRIGENDUM 1 TSO Published 2008-12-15 Industrial automation systems and integration Product data representation and exchange - Part 111: Integrated application resource: Elements for the procedural modelling of solid shapes TECHNICAL CORRIGENDUM 1 Systemes d'automatisation industrielle et integration - Représentation et échange de données de produits RECTIFICATIF TECHNIQUE1 Technical Corrigendum 1 to ISO 10303-111:2007 was prepared by Technical Committee ISO/TC 184 Automation systems and integration, Subcommittee SC 4, Industrial data. Introduction The modifications made to IS0 10303-111:2007 have four main objectives: to correct the reference to the type non_negative_length_measure, which was originally defined in ISO 10303-108 but has now been moved to ISO 10303-41; b)todisambiguate references to enumerated valuesinWHERErulesof the entiti extruded_face_solid_with_trim_conditions; d) to rename the enumerated values of the type blend_radius_variation_type to avoid a name space clash with Edition 2 of AP209. The opportunity has also been taken to correct an error in the logic of the function validate_countersink_radi. ICs 25.040.40 Ref. No.ISO 10303-111:2007/Cor.1:2008(E) @ ISO 2008 - All rights reserved Copyright Interna national Organizatinfor Standardizationrland Not for Res IS0 10303-111: 2007/Cor.1:2008(E) Modifications to the text and figures of IS0 10303-111:2007 Introduction, pp. vi, vii Replace Figure 1 on p. vii with the following: aamosal oddns schema measure_schema geo metry_scherna topology_scherma solid shape. ele rment_scherma geo metric_ rmodel schema representationscherna mathermatical functions_schema sketch_scherma Figure 1 - Schema level diagram of relationships between the solid_- shape_element_schema of this part of ISO 10303 and other resource schemas 2 ISO 2008 - All rights reserved Not for Resale ISO 10303-111: 2007/Cor.1:2008(E) Clause 4.1, Introduction, pp. 5,6 Replace the formal reference to the measure_schema on p. 5 with the following: REFERENCE FROM measure_schema - IS0 10303-41 (length_measure, non_negative_length_measure, plane_angle_measure, positive_length_measure, positive_plane_angle_measure); Further, delete the formal reference to the explicit_geometric_constraint_schema on p. 6, and also delete the line specifying that schema from NOTE I on the same page. Clause 4.3.5, blend_radius_variation_type, p. 9 Replace the EXPRESS code and the enumeration list on p. 9 with the following: EXPRESS specification: *） TYPE blend_radius_variation_type = ENUMERATION OF (linear_blend, cubic_blend, unspecified_blend); END_TYPE; (* Enumerated item definitions: linear_blend: the blend radius varies linearly between radius definition points. cubic_blend: the blend radius varies as a cubic between radius definition points. unspecified_blend: the blend radius variation is not specified. Clause 4.4.6, solid_with_variable_radius_edge_blend, pp. 17 - 19 Replace the descriptive text on p. 18 between Notes 3 and 4 with the following In any interval whose radius-defining function is cubic_blend, the actual function is determined us- ing Hermite interpolation, in terms of the radi at each end point of the interval and values of the first derivatives of the radius variation function at those end points. Replace the text of Note 5 on p. 18 with the following: In any interval for which the value of the radius-defining function is unspecified_blend it is recom- mended that linear interpolation is used initially in the receiving system, but that the user is warned that some other native blending capability of that system may be more appropriate. Clause 4.4.48, extruded_face_solid_with_trim_conditions, pp. 64-66 Replace the EXPRESS code on p. 65 with the following, in which WHERE rules WR2, WR3, and WR4 have been modified: @ISO. 2008.-- All rights reserved 3 Copyright Int al Organization for Standardizatior ISO 10303-111: 2007/Cor.1:2008(E) EXPRESS specification: *) EN