The following describes the most significant changes which
occurred in the AST library between versions V8.6.3 and V8.7.0:
- The RegionRegion class has a new method called astGetRegionDiscastGetRegionDisc, which
returns the centre and radius of a disc that just encloses a
2-dimensional Region.
- A new subclass of Region called “MocMoc” has been added. A Moc
describes an arbitrary region of the sky in the form of a set of HEALPix
cells.
- The BoundedBounded attribute defined by the Region class is now always
non-zero for Regions defined within a SkyFrameSkyFrame, regardless of whether the
Region has been negated. Previously, it was non-zero only if the Region
had not been negated. Note, this change only affects Regions defined
within SkyFrames.