5.2 MIM EXPRESS short listing

This clause specifies the EXPRESS schema derived from the mapping table. It uses elements from the common resources or from other application modules and defines the EXPRESS constructs that are specific to this part of ISO 10303.

This clause constitutes the Module Interpreted Module (MIM) of the application module.

This clause also specifies the modifications that apply to the constructs imported from the common resources.

The following restrictions apply to the use, in this schema, of constructs defined in common resources or in application modules:

• use of a supertype entity does not make applicable any of its specializations, unless the specialization is also imported in the MIM schema;
• use of a SELECT type does not make applicable any of its listed types unless the listed type is also imported in the MIM schema.

Short names of entities defined in this schema are described in Annex A. Unambiguous identification of this schema is defined in Annex B.

USE FROM Part_template_shape_with_parameters_mim;    --  ISO/TS 10303-1720



USE FROM Physical_unit_2d_shape_mim;    --  ISO/TS 10303-1726



USE FROM Physical_unit_design_view_mim;    --  ISO/TS 10303-1728



REFERENCE FROM support_resource_schema    --  ISO 10303-41
  (bag_to_set);
(*



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

Part_template_shape_with_parameters_mim	ISO/TS 10303-1720
Physical_unit_2d_shape_mim	ISO/TS 10303-1726
Physical_unit_design_view_mim	ISO/TS 10303-1728
support_resource_schema	ISO 10303-41

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

5.2.1 MIM entity definition

This subclause specifies the MIM entity for this module. The MIM entity and definition is specified below.

5.2.1.1 component_2d_location   

EXPRESS specification:

*)
ENTITY component_2d_location
  SUBTYPE OF (context_dependent_shape_representation, shape_representation_relationship, representation_relationship_with_transformation, definitional_representation_relationship);
DERIVE
  SELF\context_dependent_shape_representation.representation_relation : component_2d_location := SELF;
WHERE
  WR1: SELF\representation_relationship.name = 'component 2d location';
END_ENTITY;
(*

Attribute definitions:

representation_relation: an attribute inherited from the context_dependent_shape_representation shall be redeclared as the component_2d_location for the component_2d_location.

Formal propositions:

WR1: The name shall be 'component 2d location'.

5.2.2 MIM function definition

This subclause specifies the MIM function for this module. The MIM function and definition is specified below.

5.2.2.1 cto2d_determinant_test

EXPRESS specification:

LOCAL
  det : REAL := 0.0;
  DRs : LIST [4:4] OF REAL := [];
END_LOCAL;
     DRs[1] := cto2d.u[1].direction_ratios[1];
     DRs[2] := cto2d.u[1].direction_ratios[2];
     DRs[3] := cto2d.u[2].direction_ratios[1];
     DRs[4] := cto2d.u[2].direction_ratios[2];
     det  :=  (DRs[1] * DRs[4]) - (DRs[2] * DRs[3]);
IF (Abs(expected_value - det) < Abs(delta) ) THEN
    RETURN (TRUE);
ELSE
    RETURN (FALSE);
END_IF;

Argument definitions:

cto2d: the specified cartesian_transformation_operator_2d.

expected_value: the specified real value.

delta: the specified real value.

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