NullRegion

A boundless region within a Frame

Description:

The NullRegion class implements a Region with no bounds within a Frame. If the Negated attribute of a NullRegion is false, the NullRegion represents a Region containing no points. If the Negated attribute of a NullRegion is true, the NullRegion represents an infinite Region (that is, all points in the coordinate system are inside the NullRegion).

Constructor Function

AST_NULLREGION

Inheritance

The NullRegion class inherits from the Region class.

Attributes

The NullRegion class does not define any new attributes beyond those which are applicable to all Regions.

Functions

The NullRegion class does not define any new routines beyond those which are applicable to all Regions.