The Stony Brook Algorithm Repository is a great resource for problems like this, and they even have a discussion of your problem here that offers a few options and code (though not in Perl ;-().

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I'd like to be able to assign to an luser

In reply to Re: To Voronoi (and if so how)? by Albannach
in thread To Voronoi (and if so how)? by pileswasp

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