Nice Karl! I’d love to learn more about this. Does the shapes here implement a Spatial4j Shape and thus would work with SpatialPrefixTree & friends for index & search? If not, what is the search side of the equation here?
~ David Smiley Freelance Apache Lucene/Solr Search Consultant/Developer http://www.linkedin.com/in/davidwsmiley On Thu, Jan 22, 2015 at 3:08 PM, Karl Wright <daddy...@gmail.com> wrote: > I would like to explore contributing a geo3d package to Lucene. This can > be used in conjunction with Lucene search, both for generating geohashes > (via spatial4j) for complex geographic shapes, as well as limiting results > resulting from those queries to those results within the exact shape in > highly performant ways. > > The package uses 3d planar geometry to do its magic, which basically > limits computation necessary to determine membership (once a shape has been > initialized, of course) to only multiplications and additions, which makes > it feasible to construct a performant BoostSource-based filter for > geographic shapes. The math is somewhat more involved when generating > geohashes, but is still more than fast enough to do a good job. > > For reasons that are not really technical, the only open-source project > that I can contribute this to initially is Lucene. If people believe it > would be a valuable addition, and would like me to create a ticket and > attach a patch, please respond. > > Thanks, > Karl Wright > >
