Derivation of parameterisation Application Object

A Derivation_of_parameterisation is a relationship between:

• a Parameterisation for a Physical_space that is a 'product' (i.e. '´') of component instances of Physical_space; and
• a list of instances of Parameterisation for each of the component instances of Physical_space.

A Derivation_of_parameterisation indicates that each member of the 'product' Physical_space is identified by a Maths_value that is an array, where each item in the array identifies a member of a component Physical_space.

The order of the items in the array is the same as the order of the list of references to a Physical_space specified by this application object.

EXAMPLE - If the 2D set of points on a product surface has the parameterisation P₁, and the 1D set of states in an activity has a parameterisation P₂, then the 3D set of set of points for states has the parameterisation P₁´P₂.

EXPRESS specification:

*)
ENTITY Derivation_of_parameterisation;
  derived  :  Parameterisation;
  source  :  LIST [1,?] OF Parameterisation;
END_ENTITY;
(*

Attribute definitions:

derived: the Parameterisation that is derived from the source.

source: the list of instances of Parameterisation that gives the derived.

If the parameterisation for a single state of a product is derived from the parameterisation of the product, then the source shall be the single item that is the parameterisation of the product.