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Topic: Decision whether point lies within closed contour
Replies: 6   Last Post: Oct 16, 2013 4:45 AM

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Sseziwa Mukasa

Posts: 108
Registered: 8/26/07
Re: Decision whether point lies within closed contour
Posted: Oct 9, 2013 10:04 PM
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An algorithm exists, see point in polygon on Wikipedia, but is not one of the built in functions as far as I know.

Daniel Lichtblau has a implementation of ray casting here:


On Oct 9, 2013, at 2:10 AM, "Dr. Robert Kragler" <> wrote:

> Does an algorithm or even a Mathematica procedure exist to decide whether a
> points is located inside or outside a closed contour resp. closed polygonal line?
> Thanks for any reply
> Robert Kragler

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