Pixar

Pixar Animation Studios

Dirk Van Gelder

Adam Woodbury

Timothy S Milliron

Robert Jensen

Michael B Comet

Brad Andalman

Venkateswaran Krishna

George Elkoura

In various embodiments, systems and methods are disclosed for rapidly generating tetrahedral volumes using centerlines in character animation. The volumes are generated to closely approximate bounding volumes that provide rapid collision detection while at the same time conforming to the original mesh surface. Therefore, more accurate and higher quality collisions are achieved using the original surface in real-time and without using a proxy/simulation.

Tetrahedral volumes from segmented bounding boxes of a subdivision

To prevent correlated data from being inadvertently altered by subsequent modifications or additions, changes to correlated data are automatically detected. Corrections may be automatically applied to data to preserve data correlation. Change detection data is determined from an initial correlation between source data and dependent data. The change detection data is stored in association with the dependent data. A subsequent evaluation of the data defines a current correlation between the source data and the dependent data. The current correlation is evaluated with the change detection data to determine if the current correlation differs from the initial correlation. If the current correlation between source data and dependent data does not match the initial correlation, the current correlation is reevaluated using topological; geometric, or other analysis techniques. The reevaluated correlation can be provided as part of the authored state of a computer graphics component.

Preserving data correlation in asynchronous collaborative authoring systems

A method for performing non-affine deformations. The method includes receiving data representing mathematical vectors associated with elements defining an object. The elements are organized in a hierarchy, a different subset of mathematical vectors is associated with one or more elements, and the mathematical vectors within each subset are defined relative to a local coordinate space associated with each element. The method further includes determining that a first non-affine deformer is to be applied to a first set of the elements, and, for each element in the first set, applying the first non-affine deformer to world coordinate space values corresponding to the mathematical vectors within the subset of mathematical vectors associated with the element to generate modified world coordinate space values for the mathematical vectors.

System and method for performing non-affine deformations

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San Francisco, CA, United States of America

Dirk Van Gelder