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Re: [jts-dev] GeometryFactory and PrecisionModel
Updated the FAQ page.  

On Tue, Sep 4, 2018 at 10:14 AM Martin Davis <mtnclimb@xxxxxxxxx> wrote:
This is covered by a FAQ question: https://locationtech.github.io/jts/jts-faq.html#D6

But Bjorn's excellent observation needs to be added.  I will do that.

On Tue, Sep 4, 2018 at 10:12 AM Martin Davis <mtnclimb@xxxxxxxxx> wrote:
Exactly right, Bjorn.

Would be good to be more explicit about this in the Javadoc.

On Tue, Sep 4, 2018 at 9:21 AM Björn Harrtell <bjorn.harrtell@xxxxxxxxx> wrote:
To me, this is sound.

If input has higher precision it needs to be simplified which often is no trivial task depending on requirements on topological consistency and geometry validity which will vary depending on what the actual data. The factory cannot make the right choice for you.

Den tis 4 sep. 2018 06:00David Smiley <david.w.smiley@xxxxxxxxx> skrev:
Why is it that the GeometryFactory does not _use_ it's PrecisionModel?  The javadocs of GF even say PM isn't used on the factory methods; so this is deliberate, but no explaination is given.  I do see the PM is used in WKTReader.  I'm guessing it has something to do with performance.

~ David
--
Lucene/Solr Search Committer, Consultant, Developer, Author, Speaker
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