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Director Curve

The curve ${\bf d}(u)$ in the Ruled Surface parameterization

\begin{displaymath}
{\bf x}(u,v)={\bf b}(u)+v{\bf d}(u).
\end{displaymath}

See also Directrix (Ruled Surface), Ruled Surface, Ruling


References

Gray, A. Modern Differential Geometry of Curves and Surfaces. Boca Raton, FL: CRC Press, p. 333, 1993.




© 1996-9 Eric W. Weisstein
1999-05-24