Physically based models with rigid and deformable components
Terzopoulos, D.; Witkin, A.
Computer Graphics and Applications, IEEE
Volume 8, Issue 6, Nov 1988 Page(s):41 - 51
Digital Object Identifier 10.1109/38.20317
Summary:A class of physically based models suitable for animating flexible
objects in simulated physical environments was proposed earlier by the
authors (1987). The original formulation works as well in practice for
models whose shapes are moderately to highly deformable, but it tends to
become numerically ill conditioned as the rigidity of the models is
increased. An alternative formulation of deformable models is presented
in which deformations are decomposed into a reference component, which
may represent an arbitrary shape, and a displacement component, allowing
deformation away from this reference shape. The application of the
deformable models to a physically based computer animation project is
illustrated
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