[ChrisFoster]

This is pretty neat work, I was considering using it to help work around the problems of anisotropically scaled SDF font rendering. (Trick: do the anisotropic scaling and add the Jacobian correction factor per color channel before combining with the median. This will avoid some subset of the artifacts you get when trying to anisotropically scale SDFs and subsequently use them for antialiasing and stroke rendering.)

If you're going to use this library, note that the maintenance situation is complicated. Some forks seem well ahead in terms of bug fixes, for example https://github.com/RCrockford/msdfgen