-- File: PGeom_Direction.cdl -- Created: Mon Feb 22 17:34:08 1993 -- Author: Philippe DAUTRY -- -- Copyright: Matra Datavision 1993 class Direction from PGeom inherits Vector from PGeom ---Purpose : The class Direction specifies a vector that is -- never null. It is a unit vector. -- ---See Also : Direction from Geom. uses Vec from gp is Create returns mutable Direction from PGeom; --- Purpose : Creates a unit vector with default values. ---Level: Internal Create (aVec: Vec from gp) returns mutable Direction from PGeom; ---Purpose : Create a unit vector with . ---Level: Internal end;