Issue No. 05 - September/October (1989 vol. 9)
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/38.35537
<p>The article was motivated by J. Blinn's column on the many ways to draw a circle (see ibid., vol.7, no.8, p.39-44, 1987). The authors have found several other ways to represent the circle as a nonuniform rational B-spline curve, which they present. Square-based methods, infinite control points, triangle-based methods, general circular arcs and rational cubic circles are some of the methods and types of circle discussed.</p>
L. Piegl and W. Tiller, "A Menagerie of Rational B-Spline Circles," in IEEE Computer Graphics and Applications, vol. 9, no. , pp. 48-56, 1989.