|
|
Application module:
Feature and connection zone |
ISO/TS 10303-1671:2018-11(E)
© ISO
|
This clause specifies the information requirements for the
Feature and connection zone
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
Feature_and_connection_zone_arm
schema and identifies the necessary external references.
EXPRESS specification:
*)
SCHEMA Feature_and_connection_zone_arm;
(*
The following EXPRESS interface statements specify the elements
imported from the ARMs of other application modules.
EXPRESS specification:
*)
USE FROM
Shape_feature_arm;
--
ISO/TS 10303-1764
USE FROM
Surface_conditions_arm;
--
ISO/TS 10303-1110
REFERENCE FROM
Support_resource_arm
--
ISO/TS 10303-1800
(bag_to_set);
(*
NOTE 1
The schemas referenced above are specified in the following
part of ISO 10303:
| Shape_feature_arm |
ISO/TS 10303-1764 |
| Surface_conditions_arm |
ISO/TS 10303-1110 |
| Support_resource_arm |
ISO/TS 10303-1800 |
NOTE 2
See Annex C,
Figures
C.1and C.2
for a graphical representation of this schema.
This subclause specifies the ARM type
for this application module. The ARM type and
definition is specified below.
The facz_shaped_element_select type is an extension
of the
shaped_element_select type.
It adds the data
type
Characterizable_object
to the list of alternate data types.
EXPRESS specification:
*)
TYPE
facz_shaped_element_select =
SELECT
BASED_ON
shaped_element_select
WITH
(Characterizable_object);
END_TYPE;
(*
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.
A Connection_zone is a type of
Shape_element.
A Connection_zone is also either a type of
Instanced_feature
or is a type of
Placed_feature.
A Connection_zone is an area on the surface of a design object that
may be used to establish electrical or physical connectivity with another design object.
A Connection_zone shape is defined in the shape definition of the feature that references the Connection_zone.
NOTE 1
This part of ISO 10303 does not provide for unique identification of Connection_zone so references
to a Connection_zone should be explicit or should explicitly reference the geometric model transformation
that places the geometric model of the Connection_zone in a geometric model of a feature or view.
NOTE 2
The majority of applications will be the case where a Connection_zone is also
an Instanced_feature.
EXAMPLE
A Connection_zone defined in a design automation component data library would be defined in the geometric model of
the terminal and so would be also an instance of
Instanced_feature.
EXPRESS specification:
*)
ENTITY Connection_zone
SUBTYPE OF (Shape_element);
DERIVE
SELF\Shape_element.product_definitional : BOOLEAN := TRUE;
INVERSE
surface_conditions : SET[0:?] OF Surface_condition FOR described_element;
WHERE
WR1: NOT EXISTS (SELF\Shape_element.description);
WR2: NOT EXISTS (SELF\Shape_element.element_name);
END_ENTITY;
(*
Attribute definitions:
product_definitional:
a Connection_zone shall be definitional.
surface_conditions:
specifies a set of
Surface_conditions
that may be applied to the Connection_zone.
Formal propositions:
WR1:
The
description
shall not be populated.
WR2:
The
element_name
shall not be populated.
Informal propositions:
IP1:
All points in a Connection_zone shall be topologically connected.
IP2:
A particular instance of Connection_zone shall be referenced by exactly one shape instantiation.
IP3:
A particular instance of Connection_zone shall be referenced by exactly one feature.
A Feature_definition_with_connection_area is a type of
Shape_feature_definition
that specifies one or more areas on the feature that may be attachment areas when used in a realization.
EXPRESS specification:
*)
ENTITY Feature_definition_with_connection_area
SUBTYPE OF (Shape_feature_definition);
connection_area :
OPTIONAL
SET[1:?] OF Connection_zone;
END_ENTITY;
(*
Attribute definitions:
connection_area:
specifies the role of one or more
Connection_zones
for the Feature_definition_with_connection_area.
The value of this attribute need not be specified.
*)
END_SCHEMA; -- Feature_and_connection_zone_arm
(*
© ISO 2018 — All rights reserved
