This part of ISO 13584 specifies a representation category called basic_geometry. This representation
category captures the generic concepts of the shape of a part. This representation category may be
associated with any of the items defined in a parts library. This part of ISO 13584 also defines how
representations that belong to this representation category may be exchanged within a library
exchange context by means of FORTRAN programs compliant with ISO 13584-31:1999.
The following are within the scope of this part ISO 13584:
— the definition of the basic_geometry representation category and the mechanisms to be used to
reference it;
— the properties to be used to characterize a particular representation within the basic_geometry
representation category;
— the exchange format to be used for the library external files that describe the basic_geometry
representations of classes of items described in a parts library by means of FORTRAN
programs based on the application programming interface specified in ISO 13584-31:1999;
— the mechanism to be used, by case of separate agreement between the sender and the
receiver, to reference external files that describe the basic_geometry representations of classes
of items described in a parts library by means of formats not specified in ISO 13584;
— the implementation resources to be supported on any implementation that claims conformance
to this part of ISO 13584;
— the dictionary entries to be supported by any implementation that claims conformance to this
part of ISO 13584;
— the standard data to be recognized by any implementation that claims conformance to this part
of ISO 13584.
The following is outside the scope of this part of ISO 13584:
— the structure and exchange format of a library delivery file that includes references to the
representation category defined in this part of ISO 13584, and/or to the library external files
whose exchange format is specified.