kicad/thirdparty/rtree
..
geometry
CMakeLists.txt
LICENSE.GPLv3
README.txt

README.txt

This directory contains the rtree library. A version of this library can be found at https://github.com/nushoin/RTree.

Upstream does not explicitly list a license term (other than free for all to use), so this code
will fall under the GPLv3, since that is what KiCad uses.