[Qgis-developer] QgsGeometry, Geos and SFCGAL

[Nyall Dawson]

On 12 March 2017 at 09:07, Sebastiaan Couwenberg <sebastic at xs4all.nl> wrote:
> On 03/11/2017 04:26 AM, Nyall Dawson wrote:
>> Instead, a better approach is if we selectively change certain
>> operations to use a different backend only after we carefully evaluate
>> the results for each individual operation concerned. E.g. if we found
>> that SFCGAL resulted in intersections which are equally reliable as
>> GEOS, and faster in the majority of geometries, then we'd change
>> QgsGeometry::intersection to ALWAYS use SFCGAL.
>
> SFCGAL is not very actively developed, in its current shape is not the
> best choice to build upon. It either needs more active participation
> from the community, or better funding. Since the initial funding dried
> up, the activity in the project slowed to a crawl.
>
> I'm considering removing the SFCGAL support in the PostGIS Debian
> package if the situation doesn't improve. For the same reasons I'd be
> reluctant to enable its support in QGIS if that were to arrive.

Thanks for the heads up - this is very valuable to know before anyone
invests time in this effort!

Nyall