Application module: Geometric model 2d 3D relationship | ISO/TS 10303-1404:2018-11(E) © ISO |
This clause specifies the information requirements for the Geometric model 2d 3D relationship 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 Geometric_model_2d_3d_relationship_arm schema and identifies the necessary external references.
EXPRESS specification:
*)
SCHEMA Geometric_model_2d_3d_relationship_arm;
(*
The following EXPRESS interface statements specify the elements imported from the ARMs of other application modules.
EXPRESS specification:
*)
USE FROM
Contextual_shape_positioning_arm;
--
ISO/TS 10303-1027
USE FROM
Geometric_model_relationship_arm;
--
ISO/TS 10303-1403
(*
NOTE 1 The schemas referenced above are specified in the following part of ISO 10303:
Contextual_shape_positioning_arm ISO/TS 10303-1027 Geometric_model_relationship_arm ISO/TS 10303-1403
NOTE 2 See Annex C, Figures C.1and C.2 for a graphical representation of this schema.
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.
An Axis_placement_2d_3d_mapping is a geometric transformation defined by a source Axis_placement_2d and a target Axis_placement_3d.
The transformation shall be computed as the following mapping:
EXPRESS specification:
*)
ENTITY Axis_placement_2d_3d_mapping;
transform_item_1 : Axis_placement_2d;
transform_item_2 : Axis_placement_3d;
END_ENTITY;
(*
Attribute definitions:
transform_item_1: the Axis_placement_2d that plays the role of source in the transformation.
transform_item_2: the Axis_placement_3d that plays the role of target in the transformation.
EXPRESS specification:
*)
ENTITY Coordinated_geometric_relationship_with_2d_3d_placement_transformation
SUBTYPE OF (Geometric_model_relationship_with_transformation);
transformation : Axis_placement_2d_3d_mapping;
WHERE
WR1: NOT('GEOMETRIC_MODEL_RELATIONSHIP_ARM.DEFINITIONAL_REPRESENTATION_RELATIONSHIP' IN TYPEOF(SELF));
END_ENTITY;
(*
Attribute definitions:
transformation: the Axis_placement_2d_3d_mapping that identifies the transformation for the Coordinated_geometric_relationship_with_2d_3d_placement_transformation.
Formal propositions:
WR1: A Coordinated_geometric_relationship_with_2d_3d_placement_transformation shall not be a Definitional_representation_relationship.
*)
END_SCHEMA; -- Geometric_model_2d_3d_relationship_arm
(*
© ISO 2018 — All rights reserved