## 29 Geometry

Much of the geometry code in Octave is based on the Qhull library1. Some of the documentation for Qhull, particularly for the options that can be passed to `delaunay`, `voronoi` and `convhull`, etc., is relevant to Octave users.

#### Footnotes

[1] Barber, C.B., Dobkin, D.P., and Huhdanpaa, H.T., The Quickhull Algorithm for Convex Hulls, ACM Trans. on Mathematical Software, 22(4):469–483, Dec 1996, http://www.qhull.org