Geometry Processing – Mesh Reconstruction
Geometry processing: Revision history
https://www.youtube.com/watch?v=BVVfs4zKrgk (play 0:00 to 1:40)
https://www.youtube.com/embed/9NlqYr6-TpA?start=43 (just a few secs)
Has undirected and directed edges:
https://www.youtube.com/embed/USyoT_Ha_bA?start=354
Sketchpad: A man-machine graphical communication system
[Kazhdan et al. 2006]