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Can local NURBS refinement be achieved by modifying only the user interface?

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posted on 22.07.2020 by Neil Dodgson, J Kosinka
© 2015 The Authors. NURBS patches have a serious restriction: they are constrained to a strict rectangular topology. This means that a request to insert a single new control point will cause a row of control points to appear across the NURBS patch, a global refinement of control. We investigate a method that can hide unwanted control points from the user so that the user's interaction is with local, rather than global, refinement. Our method requires only straightforward modification of the user interface and the data structures that represent the control mesh, making it simpler than alternatives that use hierarchical or T-constructions. Our results show that our method is effective in many cases but has limitations where inserting a single new control point in certain cases will still cause a cascade of new control points to appear across the NURBS patch.

Funding

Unifying NURBS and subdivision: Extracting sparse shape descriptions using NURBS-compatible subdivision | Funder: Engineering and Physical Sciences Research Council | Grant ID: EP/H030115/1

History

Preferred citation

Dodgson, N. A. & Kosinka, J. (2016). Can local NURBS refinement be achieved by modifying only the user interface? Computer-Aided Design, 71, 28-38. https://doi.org/10.1016/j.cad.2015.09.006

Journal title

Computer-Aided Design

Volume

71

Publication date

01/02/2016

Pagination

28-38

Publisher

Elsevier BV

Publication status

Published

Contribution type

Article

Online publication date

02/10/2015

ISSN

0010-4485

eISSN

1879-2685

Language

en

Exports