Patent
1992-10-29
1996-09-10
Zimmerman, Mark K.
395123, G06T 1500
Patent
active
055553567
ABSTRACT:
A method and system for representing an arbitrary parametric surface having one or more trimming polylines applied thereto. A quadrilateral mesh coextensive with the parametric surface is generated. The quadrilateral mesh has a plurality of edges and vertices coinciding with the line segments and points of the trimming polylines. In order to generate the quadrilateral mesh, a two-dimensional array of U,V values is defined, wherein points in the array are adjusted to include the points of the trimming polylines. After all of the points needing adjustment are adjusted, the points in the array are evaluated, thereby creating geometric coordinate values for each point in the array.
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Buchel Rudolph
International Business Machines - Corporation
Kinnaman, Jr. William
Walker Mark S.
Zimmerman Mark K.
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