Your last statement is exactly what I want:

In that case, what you need to do is construct a circle from 3 points.

But that just moves the problem to deciding which three points. I tried several heuristics to pick 3 suitable points, but despite that this is trivial by eye, I failed to find any one that would deal with all cases.

So then you are left with finding the smallest enclosing circle.

I've implemented the naive O(n3) algorithm, and if you feed it all the points for every populated tile, it works. Its not fast.

There are O(n) algorithms out there, but finding either an algorithmic description that is intelligible; or an implementation that actually works when ported to Perl defeated me.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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In reply to Re^5: Placeing Tiles in a Circle by BrowserUk
in thread Placeing Tiles in a Circle by janDD

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