Delta Mush for Smooth Deformations

https://vimeo.com/103666815
http://www.fxguide.com/wp-content/uploads//2014/08/deltaMush.mp4
https://vimeo.com/103717638
https://www.youtube.com/watch?v=96inuOudkyk
Meshのめり込みが劇的に解消されてる。