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Hair Emoting with Style Guides in Turning Red
Describes Pixar's style-guide system for art-directing millions of hair and fur curves to reflect characters' emotional states in Turning Red.
Abstract
For Pixar’s feature film Turning Red, the grooming and simulation teams faced the challenge of handling characters with millions of fur and hair curves, which often needed to behave differently in each shot reflecting the characters’ emotional states. This work describes new tools developed to assist artists in managing and sculpting these large amounts of fur and hair. In particular, we present a novel surface-aware technique for curve deformation that interpolates hair sculpts at varying levels of detail, accompanied by a customized user interface for interactively browsing hair layers.
How to read this
- Category
- Production talk / tooling description
- Contributions
- A style-guide system for art-directing millions of fur and hair curves to reflect characters' emotional states (Turning Red)
- A surface-aware curve-deformation technique that interpolates hair sculpts at varying levels of detail
- A custom UI for interactively browsing hair layers
- Context
- Builds on prior hair shape-control work (related to Holding the Shape in Hair Simulation, Iben 2019), extending it toward emotional, per-shot art direction at production scale.Builds on: Holding the Shape in Hair Simulation
- Correctness
- Studio practice on a single feature film; results are production-proven rather than benchmarked, so the surface-aware interpolation should be read as fit-for-purpose for Pixar's pipeline rather than a generalized, validated algorithm.
- Clarity
- Accessible and tool-focused; a single pass conveys the workflow, with a second pass paying off mainly for the surface-aware deformation idea.
- How to read it
- Read for the artist-workflow and style-guide concept; skim once unless the surface-aware multi-LOD curve deformation is directly relevant to your pipeline.
Builds on
Built upon by
Related work
- The Art and Technology of Hair Simulation in Disney's Moana 2017 / SIGGRAPH
- Gravity Preloading for Maintaining Hair Shape Using the Simulator as a Closed-Box Function 2022 / SIGGRAPH
- Hair Effects in Trolls World Tour 2020 / DigiPro
- Scriptable Character FX Solution 2019 / DigiPro
Keywords
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