On normals and control nets

Authors:
Ingo Ginkel;Jorg Peters;Georg Umlauf
Affiliations:
University of Kaiserslautern, Germany;University of Florida, Gainesville, FL;University of Kaiserslautern, Germany
Venue:
IMA'05 Proceedings of the 11th IMA international conference on Mathematics of Surfaces
Year:
2005

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Abstract

This paper characterizes when the normals of a spline curve or spline surface lie in the more easily computed cone of the normals of the segments of the spline control net.