In Squeak / OpenCroquet for a while (Score 1)

This has been I think in Squeak Alice for a long time.

Also in OpenCroquet via TPainter

http://opencroquet.org/
https://lists.wisc.edu/read/messages?id=1385929

and Impara has a beautiful commercial 2D/3D drawing program based on similar technology:

http://impara.de/projekt_plopp_engl.html