Alexey Stomakhin
Andrew Moffat
ABSTRACT
We present a practical approach to model close-up water interaction with characters. We specifically focus on high-fidelity surface tension and adhesion effects as water sheds off skin. We show that an existing particle-in-cell (FLIP/APIC) solver can be adapted to capture small-scale water-solid interaction dynamics and discuss the role and implementation details of the relevant key components: treatment of surface tension and viscosity, enforcement of contact angle, and maintenance of contact with fast-moving collision geometry. The method allows for resolution of effects on a scale of a fraction of a millimeter and is performant enough to be able to cover a whole human body with a layer of water. We demonstrate successful use of the approach in a shot from Alita: Battle Angel.
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Digital Library
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- A. Stomakhin and A. Selle. 2017. Fluxed Animated Boundary Method.ACM Trans. Graph. 36, 4, Article 68 (July 2017), 8 pages. Google ScholarDigital Library
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Index Terms
- A practical guide to thin film and drips simulation
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