ISO 10303-108:2005/Cor 2:2014

INTERNATIONAL STANDARD ISO 10303-108:2005
TECHNICAL CORRIGENDUM 2
Published 2014-07-01
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION
Industrial automation systems and integration —
Product data representation and exchange —
Part 108:
Integrated generic resource:
Parameterization and constraints for explicit geometric
product models
TECHNICAL CORRIGENDUM 2
Systèmes d' automatisation industrielle et intégration – Représentation et échange de données de produits -
Partie 108 Ressources génériques intégrées: Paramétrage et contraintes pour les modèles de produits
géométriques explicites
RECTIFICATIF TECHNIQUE 2
Technical Corrigendum 2 to International Standard ISO 10303-108:2005 was prepared by Technical Committee ISO/
TC 184, Automation systems and integration, Subcommittee SC 4, Industrial data.
This Technical Corrigendum is intended to be used in conjunction with ISO 10303-108:2005/Cor.1: order of their publication. The
purpose of the modifications to the text of ISO 10303-108:2005 is to, corrections and improvements to its EXPRESS code. The changes
are mainly in the more s, qualification of attributes in the WHERE rules of entity specifications and in the coding of some functions
ICS 25.040.40 Ref. No. ISO 10303-108:2005/Cor.2:2014(E)
© ISO 2014 – All rights reserved
Published in Switzerland
ISO 10303-108: 2004/Cor.2:2014(E)
Modifications to the text of ISO 10303-108:2004
Clause 4.1, Introduction, p. 15
ReplaceISO13584_generic_expressions_schemawithiso13584_generic_expressions_-
schemainthefifthREFERENCE FROM statement,andmakethecorrespondingchangeinNote1.
Clause 5.1, Introduction, p. 30
ReplaceISO13584_generic_expressions_schemawithiso13584_generic_expressions_-
schemainthesixthREFERENCE FROMstatement,andreplaceISO13584_expressions_schema
with iso13584_expressions_schema in the seventh REFERENCE FROM statement. Make the
correspondingchangesinNote1.
Clause 5.4.7, simultaneous_constraint_group, pp. 40 - 42
ReplacetheEXPRESScodeonp. 41withthefollowing,inwhichWR1hashasbeenmodified:
EXPRESS specification:
)
*
ENTITY simultaneous_constraint_group
SUBTYPE OF (variational_representation_item);
constraint_group : SET[2:?] OF constraint_group_member;
WHERE
WR1: SIZEOF(QUERY(q < using_representations(SELF) |
*
SIZEOF(QUERY(r < q.items |
*
(’EXPLICIT_CONSTRAINT_SCHEMA.SIMULTANEOUS_CONSTRAINT_GROUP’
IN TYPEOF(r)) AND (SIZEOF(QUERY(s < constraint_group |
*
(s IN r\simultaneous_constraint_group.constraint_group)
AND NOT (r :=: SELF))) > 0))) > 0)) = 0;
WR2: SIZEOF(QUERY(q < using_representations(constraint_group[1]) |
*
(SIZEOF(QUERY(r < constraint_group |
*
item_in_context(r,q.context_of_items)))
= SIZEOF(constraint_group)))) > 0;
WR3: SIZEOF(QUERY(q < constraint_group |
*
((’EXPLICIT_CONSTRAINT_SCHEMA.EXPLICIT_CONSTRAINT’ IN TYPEOF(q))
AND (SIZEOF(QUERY(r < q.constrained_elements |
*
SIZEOF(QUERY(s < constraint_group |
*
r IN s.reference_elements)) > 0)) > 0)))) = 0;
END_ENTITY;
(
*
NOTE1 Somechangesweremadetoclause5.4.7byTechnicalCorrigendum1forISO10303-108:2004,butthe
originalEXPRESScodeofthisentitywasnotaffectedbythosechanges.
Clause 6.1, Introduction, p. 43
Replace the sixth REFERENCE FROM statement on p. 43 with the following, which references two
additionalentitiesfromtheISO13584generic_expressions_schemawhicharerequiredbythefunction
invalidate_vrep_itemdefinedonpp. 49-51:
REFERENCE FROM iso13584_generic_expressions_schema -- ISO 13584-20
(environment,
generic_variable,
variable_semantics);
2 ⃝c ISO 2014—Allrightsreserved

ISO 10303-108: 2004/Cor.2:2014(E)
Also, replace ISO13584_generic_expressions_schema with iso13584_generic_expressions_schema in
Note1.
Clause 8.4.9, neutral_sketch_representation, pp. 102 - 103
ReplacetheEXPRESScodeonp. 102withthefollowing,inwhichWR1hasbeencorrected:
EXPRESS specification:
)
*
ENTITY neutral_sketch_representation
SUBTYPE OF (shape_representation);
neutral_sketch_semantics : curves_or_area;
SELF\representation.items : SET[1:?] OF sketch_element_select;
WHERE
WR1: SIZEOF(QUERY(q < items |
*
NOT(’GEOMETRY_SCHEMA.GEOMETRIC_REPRESENTATION_ITEM’ IN TYPEOF(q)
AND (q\geometric_representation_item.dim = 3)))) = 0;
END_ENTITY;
(
*
Clause 8.5.2, check_curve_planarity, pp. 109 - 110
Replace the EXPRESS code on pp. 109 and 110 with the following, in which the local variable result
hasbeenretypedasBOOLEANandseveralattributeshavebeencorrectlyqualified:
EXPRESS specification:
)
*
FUNCTION check_curve_planarity (checked_curve: curve) : BOOLEAN;
LOCAL
crv : curve := checked_curve;
i,j : INTEGER;
result : BOOLEAN := FALSE;
END_LOCAL;
-- Determine whether the curve lies on a plane, according to its type
IF (SIZEOF([’GEOMETRY_SCHEMA.CONIC’,’GEOMETRY_SCHEMA.LINE’]
*
TYPEOF(crv)) > 0)
THEN result := TRUE;
ELSE
IF ((’GEOMETRY_SCHEMA.TRIMMED_CURVE’ IN TYPEOF(crv))
AND check_curve_planarity(crv\trimmed_curve.basis_curve))
THEN result := TRUE;
ELSE
IF ((’GEOMETRY_SCHEMA.PCURVE’ IN TYPEOF(crv))
AND (’GEOMETRY_SCHEMA.PLANE’ IN TYPEOF(crv\pcurve.basis_surface)))
THEN result := TRUE;
ELSE
IF (’GEOMETRY_SCHEMA.SURFACE_CURVE’ IN TYPEOF(crv))
THEN
BEGIN
REPEAT j := 1 TO HIINDEX(crv\surface_curve.basis_surfa
...