AP scope | AP module | AP contents | AP index | |
Application module: Basic geometry | ISO/TS 10303-1652:2006(E) © ISO |
This clause specifies the information requirements for the Basic geometry 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.
The following EXPRESS specification begins the Basic_geometry_arm schema and identifies the necessary external references.
EXPRESS specification:
*)
SCHEMA Basic_geometry_arm;
(*
The following EXPRESS interface statement specifies the elements imported from the ARM of another application module.
EXPRESS specification:
*)
USE FROM
Elemental_geometric_shape_arm;
--
ISO/TS 10303-1004
(*
NOTE 1 The schemas referenced above are specified in the following part of ISO 10303:
Elemental_geometric_shape_arm ISO/TS 10303-1004
NOTE 2 See Annex C, Figures C.1and C.2 for a graphical representation of this schema.
This subclause specifies the ARM types for this application module. The ARM types and definitions are specified below.
The constructive_element_select type is an extensible list of alternate data types that allows for the designation of the data types Axis_placement, Curve, point_select and Surface.
NOTE The list of entity data types may be extended in application modules that use the constructs of this module.
EXPRESS specification:
*)
TYPE
constructive_element_select =
EXTENSIBLE
GENERIC_ENTITY
SELECT
(Axis_placement,
Curve,
point_select,
Surface);
END_TYPE;
(*
The point_select type is an extensible list of alternate data types that allows for the designation of the data types Cartesian_point, Point_on_curve and Point_on_surface.
NOTE The list of entity data types may be extended in application modules that use the constructs of this module.
EXPRESS specification:
*)
TYPE
point_select =
EXTENSIBLE
GENERIC_ENTITY
SELECT
(Cartesian_point,
Point_on_curve,
Point_on_surface);
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.
EXPRESS specification:
*)
ENTITY Curve
SUBTYPE OF (Detailed_geometric_model_element);
END_ENTITY;
(*
EXPRESS specification:
*)
ENTITY Line
SUBTYPE OF (Curve);
END_ENTITY;
(*
EXPRESS specification:
*)
ENTITY Plane
SUBTYPE OF (Surface);
END_ENTITY;
(*
EXPRESS specification:
*)
ENTITY Point_on_curve
SUBTYPE OF (Detailed_geometric_model_element);
supporting_curve : Curve;
END_ENTITY;
(*
Attribute definitions:
supporting_curve: specifies the role of the Curve for the Point_on_curve. The supporting_curve is the Curve onto which the point is evaluated.
EXPRESS specification:
*)
ENTITY Point_on_surface
SUBTYPE OF (Detailed_geometric_model_element);
supporting_surface : Surface;
END_ENTITY;
(*
Attribute definitions:
supporting_surface: specifies the role of the Surface for the Point_on_surface. The supporting_surface is the Surface on which the point lies.
NOTE 1 A Surface may not be manifold.
NOTE 2 The Surface entity is a supertype of various specific kinds of surfaces. The definition of these specific types is outside the scope of the present module.
EXPRESS specification:
*)
ENTITY Surface
SUBTYPE OF (Detailed_geometric_model_element);
END_ENTITY;
(*
This subclause specifies the ARM subtype constraint for this module. The subtype constraint places a constraint on the possible super-type / subtype instantiations. The ARM subtype constraint and definition is specified below.
The alternate_geometry_items constraint specifies a constraint that applies to instances of subtypes of Detailed_geometric_model_element.
EXPRESS specification:
*)
SUBTYPE_CONSTRAINT alternate_geometry_items FOR Detailed_geometric_model_element;
ONEOF (Cartesian_point,
Direction,
Axis_placement,
Cartesian_transformation_2d,
Cartesian_transformation_3d,
Curve,
Point_on_curve,
Point_on_surface,
Surface);
END_SUBTYPE_CONSTRAINT;
(*
*)
END_SCHEMA; -- Basic_geometry_arm
(*
© ISO 2006 — All rights reserved