Wine Swirling

This is a unique pieces of wine animation that can never achieve visually by computer generated images, except the wine glass and the distorted background logo. The wine glass is from 3D Maya and the distorted background logo is from After Effects .The liquid sterling red wine is animated by traditional hand drawn animation. The reason behind traditional animation is that it can animated manually into a cycle animation. Try animate by computer dynamics is almost impossible. Anyone out there can proof that I am wrong, I would like to hear from you.