Clipper
Clipper.jl is a Julia wrapper for Angus Johnson's Clipper library (ver. 6.4.2)..
Clipper - an open source freeware library for clipping and offsetting lines and polygons.
The Clipper library performs line & polygon clipping - intersection, union, difference & exclusive-or, and line & polygon offsetting. The library is based on Vatti's clipping algorithm.
License
Available under the Boost Software License - Version 1.0. See: LICENSE.md.