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Wires: A Geometric Deformation Technique
Deforms a surface by associating it with editable curves (wires); moving a wire pulls the nearby surface, a deformation paradigm widely used for facial and character rigs.
Abstract
Introduces Wires, a curve-based geometric deformation technique inspired by the armatures sculptors use. A wire is a curve associated with a region of the surface together with parameters controlling its influence; deforming the wire deforms the surrounding surface, and multiple wires combine to shape complex features. Wires give an intuitive, reusable control structure for free-form surface deformation and have been used extensively for facial and character setup.
How to read this
- Category
- Method: curve-based geometric deformation (Wires)
- Contributions
- Associates editable curves (wires) with surface regions plus influence parameters
- Deforming a wire deforms the surrounding surface, and multiple wires combine
- Gives a reusable, sculptor-armature-like control structure for free-form deformation
- Context
- Builds on the space-deformation idea of Free-Form Deformation, replacing the lattice with intuitive curves widely used in facial and character setup.Builds on: Free-Form Deformation of Solid Geometric Models
- Correctness
- Sound and influential; results depend on wire placement and influence falloff, which the artist tunes.
- Clarity
- Very readable; the armature analogy makes the technique immediately graspable.
- How to read it
- First pass: the wire-plus-influence-region idea and the armature analogy. Second pass: how multiple wires blend if you will build rigs with it.
Builds on
Built upon by
Nothing yet.
Related work
- Joint-Dependent Local Deformations for Hand Animation and Object Grasping 1988 / SIGGRAPH
- Sculpt Processing for Character Rigging 2020 / SIGGRAPH
- Mean Value Coordinates for Closed Triangular Meshes 2005 / SIGGRAPH
- Animation Setup Transfer for 3D Characters 2016 / CGF
Keywords
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