[geos-devel] 3.9.0beta1 + GEOSwift

Martin Davis mtnclimb at gmail.com
Sun Nov 29 10:53:22 PST 2020

Agreed about the need to handle each dimension of the input separately.
Polygonal elements need to be reduced in a topologically correct way using
OverlayNG PrecisionReducer, and other dimensions can just be reduced in
pointwise fashion.

I intended this logic to go into GeometryPrecisionReducer, rather than
OverlayNG PrecisionReducer, since that preserves the existing API.  I see
now that the logic there is not complete - it handles Polygonal geometries,
but not collections containing Polygonal geometry.  I'll ticket that for
fixing in JTS.

On Sun, Nov 29, 2020 at 9:38 AM Paul Ramsey <pramsey at cleverelephant.ca>

> Looking at PrecisionReducer::reducePrecision, it seems like it should
> perhaps have a little extra logic so that each dimension of the input are
> handled separately. Underlying the op is just
>   OverlayNG ov(geom, nullptr, gf.get(), OverlayNG::UNION);
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/geos-devel/attachments/20201129/fdaab7e7/attachment.html>

More information about the geos-devel mailing list