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Extended Free-Form Deformation: A Sculpturing Tool for 3D Geometric Modeling
Extends FFD to non-parallelepiped and arbitrarily shaped lattices, so the deformation tool can match the feature being sculpted rather than a rigid box.
Abstract
Extends free-form deformation (FFD) beyond the parallelepiped control lattice of the original method. Extended free-form deformation (EFFD) lets the lattice take non-parallelepiped and arbitrary, even cylindrical, shapes, and supports merging lattices and forming arbitrarily shaped bumps. This yields a more flexible sculpting tool that can be shaped to the feature being deformed instead of forcing every deformation through a rectangular box.
How to read this
- Category
- Method: an extension of free-form deformation (EFFD)
- Contributions
- Allows non-parallelepiped and arbitrarily shaped control lattices
- Supports merging lattices and forming arbitrarily shaped bumps
- Makes the FFD tool conform to the feature being sculpted
- Context
- Builds on Free-Form Deformation, loosening its rigid rectangular lattice into shapes that fit the deformation at hand.Builds on: Free-Form Deformation of Solid Geometric Models
- Correctness
- Sound extension; the added flexibility comes with more lattice-setup complexity.
- Clarity
- Clear with good examples; the value over plain FFD is immediately visible.
- How to read it
- Read it right after FFD to see how the lattice constraint was relaxed; focus on the arbitrary-lattice examples.
Builds on
Built upon by
Related work
- Direct Manipulation of Free-Form Deformations 1992 / SIGGRAPH
- Free-Form Deformation of Solid Geometric Models 1986 / SIGGRAPH
- Global and Local Deformations of Solid Primitives 1984 / SIGGRAPH
- Wires: A Geometric Deformation Technique 1998 / SIGGRAPH
Keywords
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