That's one way to see it.
Of course if no one else is interested or do not have time to get
involved then I'm better of continuing the work in Apache SIS.
Sure it's faster to do things on our own, without talking to anyone,
that's how we end up with a lot of different libs doing more or less the
same stuff.
Our philosophy in Apache SIS is to follow the standards and formats if
they exist.
For Geometry that is ISO 19107, OGC Feature, the various Khronos specs
and some others like SVG, CSS...
A good geometry API should be able to map the existing.
There is a good amount of overlapping, commons geometry is a rich library.
For now I will continue the work in Apache SIS.
I'll see how it goes and perhaps start coming back to you if it can be
of mutual benefit.
Johann
Le 19/02/2026 à 14:27, Elliotte Rusty Harold a écrit :
On Thu, Feb 19, 2026 at 8:32 AM Johann Sorel via dev
<[email protected]> wrote:
part :
https://github.com/apache/sis/tree/geoapi-4.0/incubator/src/org.apache.sis.geometry/main/org/apache/sis/geometries
Apache-commons-geometry contains a single kind of geometry :
Constructive Solid Geometry. which is really nice.
But what we are making is more like JavaTopologySuite, Esri-geometry,
SVG but with 3D (and more) support for PLY, GLTF, GPU...
I'm not familiar with the math you're using, but it sounds like it's
quite different from what's in commons geometry now and has limited
overlap. If that's true, then I strongly recommend you make your own
more targeted library and artifact rather than trying to shoehorn it
into another library because the name sounds similar. Smaller, more
focused libraries speed up development and enable you to build exactly
what you need without trying to get consensus with another team.
Frankenlibraries that include everything and the kitchen sink are
already a problem for Apache Commons. I think you'll be much happier
with your own library that you control and can tailor to your
project's needs.
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