"To test the orientation directly", I would suggest:
CGAlgorithms.isCCW(Coordinate[] ring)
(Computes whether a ring defined by an array of Coordinates is oriented
counter-clockwise).
On Tue, May 13, 2014 at 9:17 PM, John Cartwright - NOAA Federal <
[email protected]> wrote:
> Hello All,
>
> I have a multipart polygon geometry that is produced from an intersection
> or union operation and am finding that the parts of that geometry don't
> have the same CCW orientation as the geometries going into the operation.
> I guess this is understandable based on information in the FAQ (
> http://tsusiatsoftware.net/jts/jts-faq/jts-faq.html#B6) explaining how
> JTS is not in agreement with the current OGC Simple Feature spec regarding
> exterior rings being in CCW order.
>
> The Geometry#reverse method seems a convenient way to re-orient the rings,
> but I don't see anything to test the orientation directly or infer it from
> testing interior vs exterior ring.
>
> Am I missing something?
>
> Thanks!
>
> --john
>
>
>
>
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