Tessellation system
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United States of America Patent
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-
Jun 27, 1995
Grant Date -
N/A
app pub date -
Jan 22, 1993
filing date -
Jan 22, 1993
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method and apparatus for tessellating a three-dimensional spline surface into shards operates on a surface which can be separated into columns having a series of subpatches. Each column is processed by performing a series of evaluations upon each of the subpatches of the column. Such evaluations include continuity between subpatches, visibility of subpatches and granularity for discretization of the subpatches and the results are stored within caches. Once the evaluations are completed, a grid which holds the discretized points of each subpatch, is computed by dynamic selection of an algorithm. Thereafter, any cracks between subpatches of the column and between columns are removed. Ultimately, the column is rendered for display. Each of the columns is handled in the same manner so as to ultimately render a set of adjacent columns that form the two-dimensional representation.
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Cited Art Landscape
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