What algorithm can I use to determine points within a semi-circle?

Posted by dmessf on Stack Overflow See other posts from Stack Overflow or by dmessf
Published on 2010-06-09T17:53:22Z Indexed on 2010/06/09 18:42 UTC
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How can I do this on a grid with several "centers", and therefore, having coincident points that I want to count only once?

What is the most efficient way to do this?

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