[Octave-patch-tracker] [patch #9000] Polygon functions for geometry/mapping package

[Philip Nienhuis]

Follow-up Comment #9, patch #9000 (project octave):

The boost "libraries" turn out to comprise 105 MB of include files. Wow.
Its a personal thing but I'm never fond of big piles of junk of which in the
end only a few files will be used. 105 MB is > 10 % of the total install size
of current mxe-octave builds.

A native .m ccw (for one polygon) could be a simple wrapper about polygonArea:
s/th like:

<texinfo>
:
ccw = polygonArea (XY) >= 0;

..but polysplit/clipper also do sets of polygons. So an ispolycw could also
be:

cw = polysplit (XY);


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