Dear All,
I've just committed some fairly major additions to AST to add a
new abstract Region class plus various concrete sub-classes for different
shaped regions. I do not think that there is much associated risk for
existing code, but be on the look out... And if you feel like making use
of Regions then feel free to test and make comments.
The primary purpose of these new classes is to support Arnold Rots STC
schema for specifying regions of space time coordinates. My next task will
be to produce an "IVOAChan" to translate between XML STC instances and AST
Regions. The idea is obviously that TimeFrame will form part of this, but
until TimeFrame is available, I will use a simple 1D Frame, and then plug
TimeFrame in in place of Frame when TimeFrame is ready.
The new version of AST is V3.5. My plan is to go to V4.0 when there is a
usable and useful IVOAChan class.
David
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