Why? Why are you doing this? BrowserUK has given you the hint you need if we understand what you are asking correctly, but the terms you use ("regular" and "irregular" in particular) and the mention of calculating a "shrinkage factor" suggests that maybe we don't have any idea what the actual constraints on your problem are. If you tell us what you want to do this for it may give enough context that we can give the answer you are looking for.

True laziness is hard work

In reply to Re: Placeing Tiles in a Circle by GrandFather
in thread Placeing Tiles in a Circle by janDD

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