Googling about rendering thick Bezier curves came across Adaptive Subdivision of Bezier Curves. An attempt to achieve perfect result in Bezier curve approximation. It’s by author of C++ library Anti-Grain Geometry.

For ages I haven’t worked with svn. Now I had to install git svn on macOS. What I wanted to make a copy in git of svn repo is: git svg clone svn:// agg-svn.