ISO 10303-111:2007/Cor 2:2014

INTERNATIONAL STANDARD ISO 10303-111:2007
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 111:
Integrated generic resource:
Elements for the procedural modelling of solid
shapes
TECHNICAL CORRIGENDUM 2
Systèmes d’ automatisation industrielle et intégration – Représentation et échange de données de produits
- Partie 111 Ressources génériques intégrées: Éléments pour la modélisation procédurale des forms
solides RECTIFICATIF TECHNIQUE 2
Technical Corrigendum 2 to International Standard ISO 10303-111:2007 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 10303-111:2007/Cor.1:2008. The purpose of the
modifications to the text of ISO 10303-111:2007 is to make minor changes in the information model to avoid an implementation
problem
ICS 25.040.40 Ref. No. ISO 10303-111:2007/Cor.2:2014(E)
© ISO 2014 – All rights reserved
Published in Switzerland
ISO10303-111: 2007/Cor.2:2014(E)
ModificationstothetextofISO10303-111:2007
Clause4.4.2,edge_blended_solid,pp. 11-12
Replace the EXPRESS code on p. 12 with the following, in which solid_with_variable_radius_edge_-
blend has been removed from the SUPERTYPE OF list:
EXPRESS specification:
)
*
ENTITY edge_blended_solid
ABSTRACT SUPERTYPE OF (track_blended_solid ANDOR (ONEOF
(solid_with_constant_radius_edge_blend,
solid_with_chamfered_edges)))
SUBTYPE OF (modified_solid);
blended_edges : LIST [1:?] OF UNIQUE edge_curve;
END_ENTITY;
(
*
Clause4.4.3,track_blended_solid,pp. 12-13
Replacetheentireentitydefinitionbythefollowing,inwhichtheEXPRESScodeandthedescriptivetext
have been amended:
A track_blended_solid is a type of edge_blended_solid in which the edges to be blended form a con-
tinuousopenorclosedtrack. A WHERE ruleisimposedtoensurethiscondition.
NOTE1 A track is related to a path as defined in ISO 10303-42 in that it consists of a list of distinct edges
connectedendtoendsothatitispossibletotraversealltheedgesinthelistcontinuouslyfromaninitialvertexto
a final vertex. The initial and final vertices may be the same in the case of a closed track. The difference is that a
path consists of instances of oriented_edge, so that there is a sense associated with the path as a whole. A track,
bycontrast,ismadeupofunorientededges.
NOTE2 Whereappropriate,this ABSTRACT entitymaybeinstantiatedasacomplexinstancewithsolid_with_-
constant_radius_edge_blendorsolid_with_chamfered_edges.
NOTE3 Figure 4 in clause 4.4.5 shows an example of a track_blended_solid, in which the blended track is
a sequence of five edges of the volume created by extruding a rectangle with two rounded corners. Since the
blend is a constant radius blend, this solid can be represented by a complex instance of track_blended_solid and
solid_with_constant_radius_edge_blend.
EXPRESS specification:
)
*
ENTITY track_blended_solid
ABSTRACT SUPERTYPE
SUBTYPE OF (edge_blended_solid);
WHERE
WR1: check_continuous_edges(SELF\edge_blended_solid.blended_edges);
END_ENTITY;
(
*
2 ⃝c ISO 2014—Allrightsreserved

ISO10303-111: 2007/Cor.2:2014(E)
Formalpropositions:
WR1: One vertex of each member of the list of edge_curve instances (except the last instance, in the
caseofanopentrack)shallbeidenticalwithonevertexofthefollowingmember.
Clause4.4.6,solid_with_variable_radius_edge_blend,pp. 17-19
Replace the descriptive text and the EXPRESS code of this clause by the following, in which edge_-
blended_solidhasbeenremovedfromtheSUPERTYPEOFlistintheEXPRESScodeandthedescriptive
text has been amended accordingly:
Asolid_with_variable_radius_edge_blendisatypeoftrack_blended_solidinwhichdifferentradius
values are specified at selected points of each of the edges concerned, and a specified interpolation
methodisusedtocomputeblendradiusvaluesatintermediatepoints.
As stated in clause 4.4.5, the geometry of the transferred blend is assumed to be of the rolling ball type,
thoughinthiscasetheradiusoftheballvariesduringitsmotion.
NOTE 1 The note in clause 4.4.5 concerning differences in the geometric interpretation of rolling ball edge
blendsappliesforthisentityalso.
Sinc
...