ISO 10303-46:1994/Cor 2:2002

Industrial automation systems and integration — Product data representation and exchange — Part 46: Integrated generic resources: Visual presentation — Technical Corrigendum 2

Systèmes d'automatisation industrielle et intégration — Représentation et échange de données de produits — Partie 46: Ressources génériques intégrées: Présentation visuelle — Rectificatif technique 2

General Information

• Status: Withdrawn
• Publication Date: 12-Jun-2002
• Withdrawal Date: 12-Jun-2002
• ICS: 25.040.40 - Industrial process measurement and control
• Technical Committee: ISO/TC 184/SC 4 - Industrial data
• Drafting Committee: ISO/TC 184/SC 4 - Industrial data
• Current Stage: 9599 - Withdrawal of International Standard
• Start Date: 14-Aug-2006
• Completion Date: 12-Feb-2026

Relations

• Corrects: ISO 10303-46:1994 - Industrial automation systems and integration — Product data representation and exchange — Part 46: Integrated generic resources: Visual presentation
• Effective Date: 06-Jun-2022
• Child: ISO 10303-46:1994 - Industrial automation systems and integration — Product data representation and exchange — Part 46: Integrated generic resources: Visual presentation
• Effective Date: 15-Apr-2008

Standards Content (Sample)

INTERNATIONAL STANDARD ISO 10303-46:1994
TECHNICAL CORRIGENDUM 2
Published 2002-05-15
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION  •  МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ  •  ORGANISATION INTERNATIONALE DE NORMALISATION

Industrial automation systems and integration — Product data
representation and exchange —
Part 46:
Integrated generic resources: Visual presentation
TECHNICAL CORRIGENDUM 2
Systèmes d'automatisation industrielle et intégration — Représentation et échange de données de produits —
Partie 46: Ressources génériques intégrées: Présentation visuelle
RECTIFICATIF TECHNIQUE 2
Technical Corrigendum 2 to International Standard ISO 10303-46:1994 was prepared by Technical Committee
ISO/TC 184, Industrial automation systems and integration, Subcommittee SC 4, Industrial data.

Introduction
This corrigendum applies to ISO 10303-46:1994 as corrected by ISO 10303-46:1994/Cor.1:1999. For the
convenience of the user, this corrigendum also includes the content of corrigendum 1.

The purpose of the modifications to the text of ISO 10303-46:1994 is to correct errors in the EXPRESS, to clarify a
definition, to correct errors in Informal propositions and Formal propositions, to correct errors identified in the
ballot for ISO 10303-518, and to replace the object identifier for the document and the schemas.

ICS 25.040.40 Ref. No. ISO 10303-46:1994/Cor.2:2002(E)
©  ISO 2002 – All rights reserved
Printed in Switzerland
ISO 10303-46:1994/Cor.2:2002(E)
Modifications to the text of ISO 10303-46:1994

Clause 2, p. 2
The Normative references require an additional normative reference for the correction identified in
clause 7.3.21. Add the following to the list of Normative references:

ISO 3098-0:1977, Technical product documentation — Lettering — Part 0: General requirements

Clause 4, p. 5
The EXPRESS specification of camera_image_3d_with_scale and aspect_ratio, defined below,
requires additional EXPRESS external references. Remove the following:

REFERENCE FROM presentation_resource_schema
(colour,
planar_box,
presentation_scaled_placement);

REFERENCE FROM measure_schema
(length_measure,
positive_plane_angle_measure);

Replace with the following:
REFERENCE FROM presentation_resource_schema
(colour,
planar_box,
planar_extent,
presentation_scaled_placement);

REFERENCE FROM measure_schema
(length_measure,
positive_ratio_measure,
positive_plane_angle_measure);

The EXPRESS specification for the presentation_organization_schema did not include a reference to
required data type. The first required data type is an entity data type, the annotation_occurrence for
the Formal propositions in area_dependent_annotation_representation and view_dependent_
annotation_representation. The second required data type is an entity data type, the symbol_
representation for the Formal propositions in symbol_representation_rule. The third required data
type is an entity data type, the symbol_representation_relationship for the Formal propositions in
symbol_representation_rule. The fourth required data type is an entity data type, the styled_item for
the Formal propositions in camera_model and light_source. The fifth required data type is an entity
data type, the founded_item. It is required to be referenced since it is now a supertype of
view_volume. Add the following to the EXPRESS specification between the 'SCHEMA
presentation_organization_schema;' and the 'REFERENCE FROM presentation_resource_schema':

2 ©  ISO 2002 – All rights reserved

ISO 10303-46:1994/Cor.2:2002(E)
REFERENCE FROM presentation_definition_schema
(annotation_occurrence,
symbol_representation,
symbol_representation_relationship);

REFERENCE FROM presentation_appearance_schema
(styled_item);
Delete the following EXPRESS specification:

REFERENCE FROM representation_schema
(item_defined_transformation,
item_in_context,
mapped_item,
representation,
representation_item,
representation_map,
representation_relationship,
representation_relationship_with_transformation);

Replace with the following EXPRESS specification:

REFERENCE FROM representation_schema
(founded_item,
item_defined_transformation,
item_in_context,
mapped_item,
representation,
representation_item,
representation_map,
representation_relationship,
representation_relationship_with_transformation);

With the addition of the annotation_occurrence, symbol_representation, symbol_representation_
relationship and styled_item to the presentation_organization_schema, NOTE 1 changed. Delete
NOTE 1 and replace with the following:

NOTE 1  The schemas referenced above can be found in the following parts of ISO 10303:
Presentation_definition_schema  Clause 5 of this part of ISO 10303
Presentation_appearance_schema  Clause 6 of this part of ISO 10303
Presentation_resource_schema  Clause 7 of this part of ISO 10303
Geometry_schema   ISO 10303-42
Representation_schema   ISO 10303-43
Measure_schema   ISO 10303-41
Support_resource_schema   ISO 10303-41

©  ISO 2002 – All rights reserved 3

ISO 10303-46:1994/Cor.2:2002(E)
Clause 4.3.45, p. 13
The Informal proposition of layered_item contradicts to the intended use of presentation_layer_
assignment. The type of representation_items assigned to a layer shall not be restricted. Remove
Informal proposition IP1.
Clause 4.5.5, p. 26
The EXPRESS specification of view_volume is revised to make it a subtype of founded_item in order
to provide a representation context for the projection_point and planar_box attributes. Remove the
EXPRESS specification and replace with the following:

EXPRESS specification:
*)
ENTITY view_volume
SUBTYPE OF (founded_item);
projection_type      : central_or_parallel;
projection_point      : cartesian_point;
view_plane_distance    : length_measure;
front_plane_distance    : length_measure;
front_plane_clipping    : BOOLEAN;
back_plane_distance    : length_measure;
back_plane_clipping    : BOOLEAN;
view_volume_sides_clipping : BOOLEAN;
view_window        : planar_box;
END_ENTITY;
(*
Add the following note at the end of the entity description:

NOTE  Since view_volume is not a subtype of geometric_representation_item the instances of
cartesian_point which is the projection_point attribute and planar_box which is the view_window
attribute are not associated in the usual way with the geometric_representation_context of each
representation using a camera_model_d3 containing this view_volume. The
geometric_representation_context is associated via the founded_item supertype.

Clause 4.5.9, p. 31
The EXPRESS specification of light_source contained logical errors in the WHERE rule. WR1
requires a role name qualified by attribute name 'ITEM' for argument 2 of built-in function USEDIN.
Delete the current WR1 and replace WR1 with the following:

WR1: SIZEOF(USEDIN(SELF,'PRESENTATION_APPEARANCE_SCHEMA.'+
'STYLED_ITEM.ITEM')) = 0;
Clause 4.5.14, p. 35
The description of the Formal propositions does not give a correct explanation of WR2. Remove the
description of WR2 and replace with the following:

WR2: The target of the mapping shall be a planar_box.
4 ©  ISO 2002 – All rights reserved

ISO 10303-46:1994/Cor.2:2002(E)

Clause 4.5.16, p. 35
The EXPRESS specification for camera_image_3d_with_scale defined below are required for
reference from other parts of ISO 10303. Add the following as clause 4.5.16 after clause 4.5.15

4.5.16 camera_image_3d_with_scale

A camera_image_3d_with_scale is a camera_image that projects three-dimensional geometry and
has a derived scale. The scale is the ratio between the size of the viewport and the size of the
view_window of the view_volume.

EXPRESS specification:
*)
ENTITY camera_image_3d_with_scale
SUBTYPE OF (camera_image);
DERIVE
scale: positive_ratio_measure := ((SELF\mapped_item.mapping_target\
planar_extent.size_in_x) / (SELF\mapped_item.mapping_source.
mapping_origin\camera_model_d3.perspective_of_volume.view_window.
size_in_x));
WHERE
WR1: ('PRESENTATION_ORGANIZATION_SCHEMA.CAMERA_MODEL_D3'
IN TYPEOF (SELF\mapped_item.mapping_source.mapping_origin));
WR2: aspect_ratio(SELF\mapped_item.mapping_target) =
aspect_ratio(SELF\mapped_item.mapping_source.mapping_origin\
camera_model_d3.perspective_of_volume.view_window);
WR3: SELF\mapped_item.mapping_source.mapping_origin\camera_model_d3.
perspective_of_volume.front_plane_clipping
AND
SELF\mapped_item.mapping_source.mapping_origin\camera_model_d3.
perspective_of_volume.view_volume_sides_clipping;
WR4: (SELF\mapped_item.mapping_target\planar_extent.size_in_x > 0)
AND
(SELF\mapped_item.mapping_target\planar_extent.size_in_y > 0);
WR5: (SELF\mapped_item.mapping_source.mapping_origin\camera_model_d3.
perspective_of_volume.view_window.size_in_x > 0)
AND
(SELF\mapped_item.mapping_source.mapping_origin\camera_model_d3.
perspective_of_volume.view_window.size_in_y > 0);
WR6: ('GEOMETRY_SCHEMA.' +
'AXIS2_PLACEMENT_2D' IN TYPEOF (SELF\mapped_item.
mapping_target\planar_box.placement))
AND NOT ('GEOMETRY_SCHEMA.' +
'AXIS2_PLACEMENT_3D' IN TYPEOF (SELF\mapped_item.
mapping_target\planar_box.placement));
END_ENTITY;
(*
Attribute definitions:
scale: the positive_ratio_measure derived from the rectangular size of the viewport and the
rectangular size of the view_volume of the camera_model.

Formal propositions:
WR1: The source of the projection shall be a camera_model_d3.

©  ISO 2002 – All rights reserved 5

ISO 10303-46:1994/Cor.2:2002(E)
WR2: The aspect ratio of the viewport shall equal the aspect ratio of the view_window of the
view_volume.
WR3: The geometry of the projected representation shall be clipped against the plane represented by
the front_plane_distance and the planes which are the sides of the volume defined by the
view_volume.
WR4: The rectangular size of the viewport shall be specified by positive values.

WR5: The rectangular size of the view_window shall be specified by positive values.

WR6: The drawing space of a camera_image_3d_with_scale shall be specified in a 2D coordinate
system.
Informal propositions:
IP1: The horizontal and vertical components of the viewport shall be parallel to the corresponding
components of the view_window of the view_volume.

Clause 4.9.1, p. 39
The EXPRESS specification for the FUNCTION acyclic_presentation_representation_relationship
contained logical errors in the function body. The assignment to variable 'x' requires a ‘SET' and not a
'BAG'. Remove the EXPRESS specification and replace with the following:

EXPRESS specification:
*)
FUNCTION acyclic_presentation_representation_relationship
( relation : presentation_representation_relationship;
children : SET OF presentation_representation ) : BOOLEAN;

LOCAL
x : SET OF presentation_representation_relationship;
local_children : SET OF presentation_representation;
END_LOCAL;
REPEAT i:=1 TO HIINDEX(children);
IF relation\representation_relationship.rep_1 :=: children[i] THEN
RETURN(FALSE);
END_IF;
END_REPEAT;
x := bag_to_set (USEDIN ( relation\representation_relationship.rep_1,
'REPRESENTATION_SCHEMA.'+
'REPRESENTATION_RELATIONSHIP.REP_2'));
local_children := children + relation\representation_relationship.rep_1;

6 ©  ISO 2002 – All rights reserved

ISO 10303-46:1994/Cor.2:2002(E)
IF SIZEOF (x) > 0 THEN
REPEAT i:=1 TO HIINDEX (x);
IF NOT acyclic_presentation_representation_relationship
(x[i] , local_children) THEN
RETURN (FALSE);
END_IF;
END_REPEAT;
END_IF;
RETURN (TRUE);
END_FUNCTION;
(*
Clause 4.9.2, p.39
The EXPRESS specification for aspect_ratio defined below are required for reference from other parts
of ISO 10303. This entity was incorrectly defined in ISO 10303-517. Add the following as clause 4.9.2
after clause 4.9.1 and before the END_SCHEMA EXPRESS specification:

4.9.2 aspect ratio
The aspect_ratio function checks that both the attributes, size_in_x and size_in_y, have positivie
values and returns a positive_ratio_measure that is the ratio of length to height for a
given planar_box. In other cases, an indeterminate value is returned.

EXPRESS specification:
*)
FUNCTION aspect_ratio (p : planar_box) : positive_ratio_measure;
(* if the dimensions of the planar_box are greater than zero,
compute the aspect ratio and return the resulting value. *)
IF (p.size_in_x > 0.) AND (p.size_in_y > 0.) THEN
RETURN (p.size_in_x / p.size_in_y);
ELSE
RETURN (?);
END_IF;
END_FUNCTION;
(*
Argument definitions:
p: The input planar_box to be checked.

Clause 5, p. 40
The EXPRESS specification for the presentation_definition_schema did not include a reference to a
required data type. The required reference is a function, the bag_to_set for the EXPRESS
specifications changed in acyclic_presentation_representation_relationship, acyclic_symbol_
representation_relationship and field_in_table. Delete the following EXPRESS specification:

REFERENCE FROM support_resource_schema
(label,
text);
©  ISO 2002 – All rights reserved 7

ISO 10303-46:1994/Cor.2:2002(E)

Replace with the following EXPRESS specification:

REFERENCE FROM support_resource_schema
(label,
text,
bag_to_set);
Clause 5.4.13, p.53
The EXPRESS specification for table_record_representation was incorrect. The local rules of
table_record_representation are incorrect since the variable map_item is of type
REPRESENTATION,, but it is used as argument to the function using_representations, which accepts
only variables of type FOUNDED_ITEM_SELECT. Remove the EXPRESS specification and replace
with the following:
EXPRESS specification:
*)
ENTITY table_record_representation
SUBTYPE OF (symbol_representation);
WHERE
WR1: (SIZEOF(USEDIN(SELF, 'REPRESENTATION_SCHEMA.'+
'REPRESENTATION_RELATIONSHIP.REP_2')) > 0)
OR
(SIZEOF(QUERY( map_item <* USEDIN(SELF, 'REPRESENTATION_SCHEMA.'+
'REPRESENTATION_MAP.'+
'MAPPED_REPRESENTATION') |
SIZEOF(QUERY( mi <* USEDIN(map_item, 'REPRESENTATION_SCHEMA.'+
'MAPPED_ITEM.'+
'MAPPING_SOURCE') |
'PRESENTATION_DEFINITION_SCHEMA.'+
'TABLE_REPRESENTATION' IN
TYPEOF (using_representations (mi)) )) > 0))
> 0);
END_ENTITY;
(*
Clause 5.4.14, p.54
The EXPRESS specification for table_record_field_representation was incorrect. The local rules of
table_record_field_representation are incorrect since the variable map_item is of type
REPRESENTATION,, but it is used as argument to the function using_representations, which accepts
only variables of type FOUNDED_ITEM_SELECT. Remove the EXPRESS specification and replace
with the following:
EXPRESS specification:
*)
ENTITY table_record_field_representation
SUBTYPE OF (symbol_representation);
WHERE
WR1: (SIZEOF(USEDIN(SELF, 'REPRESENTATION_SCHEMA.'+
'REPRESENTATION_RELATIONSHIP.REP_2')) > 0)
OR
(SIZEOF(QUERY( map_item <* USEDIN(SELF, 'REPRESENTATION_SCHEMA.'+
'REPRESENTATION_MAP.'+
'MAPPED_REPRESENTATION') |
SIZEOF(QUERY( mi <* USEDIN(map_item, 'REPRESENTATION_SCHEMA.'+
'MAPPED_ITEM.'+
8 ©  ISO 2002 – All rights reserved

ISO 10303-46:1994/Cor.2:2002(E)
'MAPPING_SOURCE') |
'PRESENTATION_DEFINITION_SCHEMA.'+
'TABLE_RECORD_REPRESENTATION' IN
TYPEOF (using_representations (mi)) )) > 0))
> 0);
END_ENTITY;
(*
Clause 5.6.2, p. 72
The EXPRESS specification for the FUNCTION acyclic_symbol_representation_relationship
contained logical errors in the function body. The assignment to variable 'x' requires a ‘SET' and not a
'BAG'. Remove the EXPRESS specification and replace with the following:

EXPRESS specification:
*)
FUNCTION acyclic_symbol_representation_relationship
(relation : symbol_representation_relationship;
children : SET OF symbol_representation ) : BOOLEAN;
LOCAL
x : SET OF symbol_representation_relationship;
local_children : SET OF symbol_representation;
END_LOCAL;
REPEAT i:=1 TO HIINDEX(children);
IF relation\rep
...