There is a proposed contribution for a 3D planar geometry package to be added to Lucene-spatial. See the description and package here: https://issues.apache.org/jira/browse/LUCENE-6196
Its quite a nice contribution that has stalled due to some back and forth on whether this belongs in Lucene or a Computational Geometry project. Since its primary function is 3D planar Geometry (in Spherical or Euclidean lat/lon space), and the SIS .geometry package has no 3D functionality, it seems like a natural fit for SIS. I thought I'd reach out to the group to gauge interest in the contribution. After speaking with other Lucene contributors it seems temporarily adding it to Lucene-spatial until it can find a permanent home in its natural habitat provides the best value to the Geo community. Interested in thoughts. - Nick
