Hi.
How about GEOS available at.
http://geos.refractions.net/
GEOS supports hole for clipping.
I could build it in MiGW.
However I've only executed demo codes.
Very nice reference. I will be taking a close look through it.
The Greiner-Hormann algorithm is still pretty interesting. The code is very simple and fast.
-- Ross Ihaka Email: [EMAIL PROTECTED] Department of Statistics Phone: (64-9) 373-7599 x 85054 University of Auckland Fax: (64-9) 373-7018 Private Bag 92019, Auckland New Zealand
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