Re: [Jts-topo-suite-user] NegativeArraySizeException from TopologyPreservingSimplifier

[Martin D. <mtn...@gm...>]

Thanks. I agree, empty components should be deleted, but are not being
handled correctly.

Code is now fixed in SVN (with unit tests).

On Sun, Jan 27, 2013 at 3:30 PM, Michaël Michaud <mic...@fr...>wrote:

> Hello Martin,
>
> Here is a reproducible bug encountered with simplifier classes (jts 1.13)
>
> 1) take a set of polygons
> 2) perform a negative buffer so that some polygons are made empty
> 3) create a MultiPolygon from the previous result with
> GeometryFactory.build()
> 4) simplify this MultiPolygon either with TopologyPreservingSimplifier
> or DouglasPeuckerSimplifier
>
> Simplifier throws a java.lang.NegativeArraySizeException
> coming from TaggedLineString#init()
>
> Note that the GeometryCollection containing empty geometries is
> considered as valid by the isValid operator
> (not sure it is right, maybe the build method should get rid of empty
> geometries).
> By the way, simplifier code should check for empty geometries before
> iterating through coordinates.
>
> Best regards,
>
> Michaël
>
>
>
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