[geos-devel] OverlayOp JTS port

[Obe, Regina]

I'm looking at the operation.overlay.OverlayOp in geos trunk

In the header it says
Last port: operation/overlay/OverlayOp.java rev. 1.23

But I don't believe this to be right since when I compare the
computeOverlay methods
against 1.2 and 1.3 versions of JTS codebase, it has an additional
EdgeNodingValidator check which wasn't introduced until later versions
of JTS.

So I'm wondering is the OverlayOp.cpp a mix of JTS versions or is the
comment above just plain wrong.

It also has a checkObviouslyWrongResult() check at the end of
computerOverlay which I haven't figured out which version that was
introduced in JTS (its not in 1.2,1.3, or 1.9).  Is this a GEOS specific
check that has no JTS equivalent?

Thanks,
Regina
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