Hi Oleg,

Op 14-4-2016 om 0:54 schreef Oleg Evseev:

Hi, Barend!

I've tried to use boost 1.61.0 beta for my case. And instead of getting problems with zero areas, I'm getting really wrong result - union ignore one of the mpolygons (without exceptions). I created ticket with WKT https://svn.boost.org/trac/boost/ticket/12125

Illustration: https://s16.postimg.org/9wcp31ik5/union+1.61.0+bug.png
appended mpolygon (the red one - two trinangles) is ignored. union result is equal to current path (the yellow one - two trinangles)

Maybe this is caused by the shared point of two trinangels in one multipolygon?

Thanks for the reports. It is indeed not solved yet. I updated the tickets. It is caused somehow by the precision and need some further study. We plan to change the details of the implementation w.r.t. precision/rescaling for one of the coming versions. Hopefully asap of course, but these things take a longer time.

Regards, Barend

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