This is 100% 2D animation.
This is what I was focusing on today in Toon Boom. It interpolates between a few specific nodes. There's some kinks to work out (that I know how to fix, if I can just get some advice from other TB animators.)
This is SO COOL though.
Layout
2019-09-08 06:11:12 +0000 UTCZedrin
2019-09-08 02:05:39 +0000 UTCDrSquawk
2019-09-08 01:32:45 +0000 UTCLayout
2019-09-08 01:31:16 +0000 UTCCalsetes
2019-09-08 00:26:28 +0000 UTC