Environment:      Siren
Superclass:         Siren.Positus
Category:         Music-Models-Representation

Instances of the Directionality species model the radiation characteristics of sound sources in room simulations.
This class can be used as a concrete one (adding a few methods to fill it out), or like the other representational classes (making concrete classes of this species).
In the later case, the value instance variable would hold a 1- or 2-dimensional position as a number or point.

MetaClass:         Directionality class