Watertight Trimmed NURBS
| Citations: | 8 - 2 self |
BibTeX
@MISC{Sederberg_watertighttrimmed,
author = {Thomas W. Sederberg and G. Thomas Finnigan and Xin Li and Hongwei Lin and Heather Ipson},
title = {Watertight Trimmed NURBS},
year = {}
}
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Abstract
This paper addresses the long-standing problem of the unavoidable gaps that arise when expressing the intersection of two NURBS surfaces using conventional trimmed-NURBS representation. The solution converts each trimmed NURBS into an untrimmed T-Spline, and then merges the untrimmed T-Splines into a single, watertight model. The solution enables watertight fillets of NURBS models, as well as arbitrary feature curves that do not have to follow isoparameter curves. The resulting T-Spline representation can be exported without error as a collection of NURBS surfaces. (a) Spout translated away from (b) Body and spout trimmed using body; intersection curve in white. trimming curves. CR Categories: I.3.5 [Computer Graphics]: Computational geometry and object modeling—Curve, surface, solid, and object representations Keywords: Surface intersection, Booleans, NURBS, T-Splines 1
Keyphrases
watertight trimmed nurbs nurbs surface computational geometry watertight model object modeling curve long-standing problem surface intersection t-spline representation intersection curve trimmed nurbs isoparameter curve object representation keywords untrimmed t-spline watertight fillet nurbs model unavoidable gap cr category untrimmed t-splines conventional trimmed-nurbs representation computer graphic arbitrary feature curve
