Application module: Compound shape representation ISO/TS 10303-1327:2010-03(E)
© ISO

Cover page
Table of contents
Copyright
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviations

4 Information requirements
   4.1 Required AM ARMs
   4.2 ARM entity definition
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
Bibliography
Index

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:

EXPRESS specification:

*)
SCHEMA Compound_shape_representation_mim;

USE FROM Edge_based_wireframe_mim;    --  ISO/TS 10303-1501

USE FROM Non_manifold_surface_mim;    --  ISO/TS 10303-1324
(*

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

Edge_based_wireframe_mim ISO/TS 10303-1501
Non_manifold_surface_mim ISO/TS 10303-1324

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 compound_shape_representation   EXPRESS-G

A compound_shape_representation is a type of shape_representation that implements the ARM concept of Compound_shape_representation. A compound_shape_representation represents the shape or a portion of the shape of a product using elements of different dimensionality such as wireframes or surface models that are topologically connected. The topology of a compound_shape_representation may be non-manifold.

EXPRESS specification:

*)
ENTITY compound_shape_representation
  SUBTYPE OF (shape_representation);
WHERE
  WR1: ( 'GEOMETRY_SCHEMA.'+ 'GEOMETRIC_REPRESENTATION_CONTEXT' IN TYPEOF ( SELF.context_of_items ) ) AND ( SELF.context_of_items\ geometric_representation_context.coordinate_space_dimension =3 );
  WR2: SIZEOF ( QUERY ( cbsr_i <* SELF.items | SIZEOF ( ['GEOMETRIC_MODEL_SCHEMA.'+ 'EDGE_BASED_WIREFRAME_MODEL' , 'GEOMETRIC_MODEL_SCHEMA.'+ 'FACE_BASED_SURFACE_MODEL' , 'REPRESENTATION_SCHEMA.'+ 'MAPPED_ITEM' , 'GEOMETRY_SCHEMA.'+ 'AXIS2_PLACEMENT_3D']* TYPEOF ( cbsr_i ) ) <>1 ) ) =0;
  WR3: SIZEOF ( QUERY ( cbsr_i <* SELF.items | SIZEOF ( ['GEOMETRIC_MODEL_SCHEMA.'+ 'EDGE_BASED_WIREFRAME_MODEL' , 'GEOMETRIC_MODEL_SCHEMA.'+ 'FACE_BASED_SURFACE_MODEL' , 'REPRESENTATION_SCHEMA.'+ 'MAPPED_ITEM']* TYPEOF ( cbsr_i ) ) =1 ) ) >0;
  WR4: SIZEOF ( QUERY ( cbsr_i <* SELF.items | ( 'REPRESENTATION_SCHEMA.'+ 'MAPPED_ITEM' IN TYPEOF ( cbsr_i ) ) AND ( SIZEOF ( ['COMPOUND_SHAPE_REPRESENTATION_MIM.'+ 'COMPOUND_SHAPE_REPRESENTATION' , 'AIC_EDGE_BASED_WIREFRAME.'+ 'EDGE_BASED_WIREFRAME_SHAPE_REPRESENTATION' , 'AIC_NON_MANIFOLD_SURFACE.'+ 'NON_MANIFOLD_SURFACE_SHAPE_REPRESENTATION']* TYPEOF ( cbsr_i\ mapped_item.mapping_source ) ) <>1 ) ) ) =0;
END_ENTITY;
(*

Formal propositions:

WR1: The compound_shape_representation shall have a coordinate_space_dimension equal to three.

WR2: The items in the compound_shape_representation shall be of type edge_based_wireframe_model, face_based_surface_model, mapped_item or axis2_placement_3d.

WR3: The items of a compound_shape_representation shall include at least one mapped_item or one edge_based_wireframe_model or one face_based_surface_model.

WR4: If there is a mapped_item in a compound_shape_representation, the source of the mapped_item shall be a compound_shape_representation, a edge_based_wireframe_shape_representation, or a non_manifold_surface_shape_representation.

Informal propositions:

IP1: All elements in a compound_shape_representation shall be topologically connected.



*)
END_SCHEMA;  -- Compound_shape_representation_mim
(*


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