System and method for computing a continuous local...

Details System and method for computing a continuous local... System and method for computing a continuous local...

2005-08-24

2009-02-24

Nguyen, Kimbinh T (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

C345S419000, C345S160000, C345S581000, C345S629000

Reexamination Certificate

active

07495663

ABSTRACT:
The present invention relates to a system for interactively moving a hit point within a current triangle of the model, where the hit point defines a location of a brush stamp relative to the model, where a circle with a radius either defines the brush stamp or minimally contains the brush stamp. For each vertex of the current triangle containing the hit point, a sub-neighborhood of vertices of the model is defined by including in the sub-neighborhood vertices of the model that are within a distance of the hit point, the distance being a sum of the radius of the circle added to a length of a longest edge that is attached to the vertex. A sub-parameterization for each sub-neighborhood is then computed. The system then finds a barycentric coordinate of the hit point in the current triangle, where the barycentric coordinate has three barycentric values, each corresponding to a vertex of the current triangle. The system the computes a local parameterization by weighted averaging of the sub-parameterizations, where each sub-parameterization is weighted according to the barycentric value of the vertex of its sub-neighborhood.

REFERENCES:
patent: 6037949 (2000-03-01), DeRose et al.
patent: 6256038 (2001-07-01), Krishnamurthy
patent: 6307555 (2001-10-01), Lee
patent: 6553337 (2003-04-01), Lounsbery
U.S. Appl. No. 10/244,599, filed Sep. 17, 2002, Maillot, Alias Systems Corp.

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