Application module: Draughting element specialisations ISO/TS 10303-1312:2018-11(E)
© ISO

Cover page
Table of contents
Copyright
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
    3.1 Terms and definitions
    3.2 Abbreviated terms

4 Information requirements
   4.1 Required AM ARM
   4.2 ARM type definitions
   4.3 ARM entity definitions
5 Module interpreted model
   5.1 Mapping specification
   5.2 MIM EXPRESS short listing
     5.2.1 MIM entity definition

A MIM short names
B Information object registration
C ARM EXPRESS-G   EXPRESS-G
D MIM EXPRESS-G   EXPRESS-G
E Computer interpretable listings
F Change history
Bibliography
Index

4 Information requirements

This clause specifies the information requirements for the Draughting element specialisations application module. The information requirements are specified as the Application Reference Model (ARM) of this application module.

NOTE 1  A graphical representation of the information requirements is given in Annex C.

NOTE 2  The mapping specification is specified in 5.1. It shows how the information requirements are met by using common resources and constructs defined or imported in the MIM schema of this application module.

This clause defines the information requirements to which implementations shall conform using the EXPRESS language as defined in ISO 10303-11. The following begins the Draughting_element_specialisations_arm schema and identifies the necessary external references.

EXPRESS specification:

*)
SCHEMA Draughting_element_specialisations_arm;
(*

4.1 Required AM ARM

The following EXPRESS interface statement specifies the elements imported from the ARM of another application module.

EXPRESS specification:

*)
USE FROM Draughting_element_arm;    --  ISO/TS 10303-1310
(*

NOTE 1   The schemas referenced above are specified in the following part of ISO 10303:

Draughting_element_arm ISO/TS 10303-1310

NOTE 2   See Annex C, Figures C.1and C.2 for a graphical representation of this schema.

4.2 ARM type definitions

This subclause specifies the ARM types for this application module. The ARM types and definitions are specified below.

4.2.1 chained_or_parallel   EXPRESS-G

A chained_or_parallel lists the types of an alignment.

EXPRESS specification:

*)
TYPE chained_or_parallel = ENUMERATION OF
   (chained,
    parallel);
END_TYPE;
(*

Enumerated item definitions:

chained: the alignment is chained;

parallel: the alignment is parallel.

4.2.2 dimension_callout_select   EXPRESS-G

The dimension_callout_select type is an extensible list of alternate data types that allows for the designation of the data type Annotation_text_occurrence.

NOTE   The list of entity data types may be extended in application modules that use the constructs of this module.

EXPRESS specification:

*)
TYPE dimension_callout_select = EXTENSIBLE GENERIC_ENTITY SELECT
   (Annotation_text_occurrence);
END_TYPE;
(*

4.2.3 dimension_type   EXPRESS-G

A dimension_type lists the types of a dimension.

EXPRESS specification:

*)
TYPE dimension_type = ENUMERATION OF
   (angular,
    curve,
    diameter,
    leader_directed,
    linear,
    ordinate,
    radius);
END_TYPE;
(*

Enumerated item definitions:

angular: the dimension type is angular;

curve: the dimension type is curve;

diameter: the dimension type is diameter;

leader_directed: the dimension type is leader directed;

linear: the dimension type is linear;

ordinate: the dimension type is ordinate;

radius: the dimension type is radius.

4.2.4 primary_or_secondary   EXPRESS-G

A primary_or_secondary lists the types of a relation.

EXPRESS specification:

*)
TYPE primary_or_secondary = ENUMERATION OF
   (primary,
    secondary);
END_TYPE;
(*

Enumerated item definitions:

primary: the relation is primary.

secondary: the relation is secondary.

4.3 ARM entity definitions

This subclause specifies the ARM entities for this module. Each ARM application entity is an atomic element that embodies a unique application concept and contains attributes specifying the data elements of the entity. The ARM entities and definitions are specified below.

4.3.1 Datum_feature_callout   EXPRESS-GMapping table

A Datum_feature_callout is a type of Draughting_element. A Datum_feature_callout is a callout that is used to denote a point, line, or plane as a datum and that specifies the designation to be used as identification of that datum.

EXAMPLE    The top view in figure 1 shows some Datum_feature_callout objects for datums labeled 'E' and 'F'.



Figure 1 —  Draughting callouts on a drawing

Figure 1 —  Draughting callouts on a drawing

EXPRESS specification:

*)
ENTITY Datum_feature_callout
  SUBTYPE OF (Draughting_element);
END_ENTITY;
(*

4.3.2 Datum_target_callout   EXPRESS-GMapping table

A Datum_target_callout is a type of Draughting_element. A Datum_target_callout is a type of callout that is used to denote points, lines, and surfaces of contact, on a part, which are used in establishing a reference datum. The callout contains an alphanumeric designation and, where applicable, a specification of the diametrical size of the target area.

EXAMPLE    The bottom view in figure 1 shows three datum target points and their associated datum target symbols.

EXPRESS specification:

*)
ENTITY Datum_target_callout
  SUBTYPE OF (Draughting_element);
END_ENTITY;
(*

4.3.3 Dimension   EXPRESS-GMapping table

A Dimension is a type of Draughting_element that is the graphical presentation of the dimension value, of associated information, and of the symbology necessary to accurately depict its area of application. A Dimension is either a Dimension_callout or additionally is a Dimension_value.

Dimension objects cover linear dimensions, angular dimensions, curve dimensions, diameter dimensions, ordinate dimensions, radius dimensions, and leader directed dimensions.

For this particular type of Draughting_callout, the inherited attribute 'contents' shall refer to Annotation_curve and Annotation_text_occurrence objects only.

EXAMPLE    Examples for the symbology are leaders, projection curves, or dimension curves.

EXPRESS specification:

*)
ENTITY Dimension
  ABSTRACT SUPERTYPE OF (Dimension_callout
                         ANDOR Dimension_value)
  SUBTYPE OF (Draughting_element);
  id : STRING;
END_ENTITY;
(*

Attribute definitions:

id: the identifier of the Dimension.

4.3.4 Dimension_callout   EXPRESS-GMapping table

A Dimension_callout is a type of Dimension. A Dimension_callout is a combination of text and of symbology that conveys presentation information about a dimension. This includes the dimension value, dimension units, tolerance information and any related notes.

EXPRESS specification:

*)
ENTITY Dimension_callout
  SUBTYPE OF (Dimension);
  callout_element : SET[1:?] OF dimension_callout_select;
  dimension_type : SET[1:?] OF dimension_type;
END_ENTITY;
(*

Attribute definitions:

callout_element: the text and possibly symbol that form the Dimension_callout.

dimension_type: specifies a set of dimension_type for the Dimension_callout.

4.3.5 Dimension_callout_relationship   EXPRESS-GMapping table

A Dimension_callout_relationship is a relationship of a Dimension_value to a Dimension_callout as either primary or secondary value. This entity is required when a primary and a secondary dimension value for different units has to be presented. In the case that only a single unit and value is to be presented instances of both types Dimension_callout and Dimension_value shall be created instead of using Dimension_callout_relationship.

EXPRESS specification:

*)
ENTITY Dimension_callout_relationship;
  relating_draughting_callout : Dimension_callout;
  related_draughting_callout : Dimension_value;
  relation_type : primary_or_secondary;
END_ENTITY;
(*

Attribute definitions:

relating_draughting_callout: specifies a role of the Dimension_callout for the Dimension_callout_relationship.

related_draughting_callout: specifies a role of the Dimension_value for the Dimension_callout_relationship.

relation_type: specifies a role of the primary_or_secondary for the Dimension_callout_relationship.

4.3.6 Dimension_prefix   EXPRESS-GMapping table

A Dimension_prefix is a type of Draughting_element.

EXAMPLE    Figure 2 illustrates a structured dimension callout with prefix information.

EXPRESS specification:

*)
ENTITY Dimension_prefix
  SUBTYPE OF (Draughting_element);
  prefix : Dimension_text;
INVERSE
  parent : Structured_dimension_callout FOR prefix;
WHERE
  WR1: prefix IN SELF\Draughting_callout.contents;
  WR2: prefix\Representation_item.name = 'prefix text';
END_ENTITY;
(*

Attribute definitions:

prefix: specifies a role of the Dimension_text for the Dimension_prefix.

parent: specifies an inverse relationship that specifies that the existence of the Dimension_prefix is dependent on the the existence of the Structured_dimension_callout that specifies the Dimension_prefix as its prefix.

Formal propositions:

WR1: The prefix must be a member of contents attribute.

WR2: The name of prefix must be 'prefix text'.

4.3.7 Dimension_sequence_pair   EXPRESS-GMapping table

A Dimension_sequence_pair is a relationship between two adjacent dimensions that share a projection curve. This may be a chained or a parallel dimension pair.

EXPRESS specification:

*)
ENTITY Dimension_sequence_pair;
  alignment : chained_or_parallel;
  predecessor : Dimension_callout;
  successor : Dimension_callout;
END_ENTITY;
(*

Attribute definitions:

alignment: specifies a role of the chained_or_parallel for the Dimension_sequence_pair.

predecessor: the Dimension_callout that plays the role of a predecessor within a particular Dimension_sequence_pair.

successor: the Dimension_callout that plays the role of a successor within a particular Dimension_sequence_pair

4.3.8 Dimension_suffix   EXPRESS-GMapping table

A Dimension_suffix is a type of Draughting_element.

EXAMPLE    Figure 2 illustrates a structured dimension callout with suffix information.

EXPRESS specification:

*)
ENTITY Dimension_suffix
  SUBTYPE OF (Draughting_element);
  suffix : Dimension_text;
INVERSE
  parent : Structured_dimension_callout FOR suffix;
WHERE
  WR1: suffix IN SELF\Draughting_callout.contents;
  WR2: suffix\Representation_item.name = 'suffix text';
END_ENTITY;
(*

Attribute definitions:

suffix: specifies a role of the Dimension_text for the Dimension_suffix.

parent: specifies an inverse relationship that specifies that the existence of the Dimension_suffix is dependent on the the existence of the Structured_dimension_callout that specifies the Dimension_suffix as its suffix.

Formal propositions:

WR1: The suffix must be a member of contents attribute.

WR2: The name of suffix must be 'suffix text'.

4.3.9 Dimension_value   EXPRESS-GMapping table

A Dimension_value is a type of Dimension.

EXPRESS specification:

*)
ENTITY Dimension_value
  SUBTYPE OF (Dimension);
  dimension_value : Dimension_text;
WHERE
  WR1: dimension_value IN SELF\Draughting_callout.contents;
  WR2: dimension_value\Representation_item.name = 'dimension value';
END_ENTITY;
(*

Attribute definitions:

dimension_value: specifies a role of the Dimension_text for the Dimension_value.

Formal propositions:

WR1: The dimension_value must be a member of contents attribute.

WR2: The name of dimension_value must be 'dimension value'.

4.3.10 Draughting_element   EXPRESS-GMapping table

A Draughting_element is a type of Draughting_callout that specifies constraints on the grouping of annotation within the context of draughting. A Draughting_element may be either a Datum_feature_callout, or a Datum_target_callout, or a Dimension, or a Dimension_prefix, or a Dimension_suffix, or a Geometric_tolerance_callout, or a Surface_condition_callout.

EXPRESS specification:

*)
ENTITY Draughting_element
  SUPERTYPE OF (Datum_feature_callout
                ANDOR Datum_target_callout
               ANDOR Dimension
              ANDOR Dimension_prefix
             ANDOR Dimension_suffix
            ANDOR Geometric_tolerance_callout
           ANDOR Surface_condition_callout)
  SUBTYPE OF (Draughting_callout);
END_ENTITY;
(*

4.3.11 Geometric_tolerance_callout   EXPRESS-GMapping table

A Geometric_tolerance_callout is a type of Draughting_element that is a combination of annotation elements that represents information about a geometric tolerance. For this particular type of callout, the inherited attribute 'contents' shall refer to Annotation_curve, Geometric_tolerance_symbol, or Annotation_text_occurrence objects only.

EXPRESS specification:

*)
ENTITY Geometric_tolerance_callout
  SUBTYPE OF (Draughting_element);
END_ENTITY;
(*

4.3.12 Structured_dimension_callout   EXPRESS-GMapping table

A Structured_dimension_callout is a type of Dimension_value that presents information associated with a dimension, in which individual elements presenting different components of the dimensional information may be identified and distinguished.

EXAMPLE    Figure 2 illustrates components of a structured dimension callout.



Figure 2 —  Structured dimension callout

Figure 2 —  Structured dimension callout

EXPRESS specification:

*)
ENTITY Structured_dimension_callout
  SUBTYPE OF (Dimension_value);
  prefix : OPTIONAL Dimension_prefix;
  suffix : OPTIONAL Dimension_suffix;
  tolerance_value : OPTIONAL Dimension_text;
  unit_text : OPTIONAL Dimension_text;
WHERE
  WR1: tolerance_value IN SELF\Draughting_callout.contents;
  WR2: NOT EXISTS(tolerance_value) OR (tolerance_value\Representation_item.name = 'tolerance value');
  WR3: unit_text IN SELF\Draughting_callout.contents;
  WR4: NOT EXISTS(unit_text) OR (unit_text\Representation_item.name = 'unit text');
END_ENTITY;
(*

Attribute definitions:

prefix: specifies a role of the Dimension_prefix for the Structured_dimension_callout. The value of this attribute need not be specified.

suffix: specifies a role of the Dimension_suffix for the Structured_dimension_callout. The value of this attribute need not be specified.

tolerance_value: specifies a role of the Dimension_text for the Structured_dimension_callout. The value of this attribute need not be specified.

unit_text: specifies a role of the Dimension_text for the Structured_dimension_callout. The value of this attribute need not be specified.

Formal propositions:

WR1: The tolerance_value must be a member of contents attribute.

WR2: If tolerance_value is set, it's name must be 'tolerance value'.

WR3: The unit_text must be a member of contents attribute.

WR4: If unit_text is set, it's name must be 'unit text'.

4.3.13 Surface_condition_callout   EXPRESS-GMapping table

A Surface_condition_callout is a type of Draughting_element that is a combination of annotation elements that represents information about a surface condition. For this particular type of callout the inherited attribute 'contents' shall refer to Annotation_curve, Surface_condition_symbol, or Annotation_text_occurrence objects only.

EXPRESS specification:

*)
ENTITY Surface_condition_callout
  SUBTYPE OF (Draughting_element);
END_ENTITY;
(*



*)
END_SCHEMA;  -- Draughting_element_specialisations_arm
(*


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