ons
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<h1><a
href="http://www.geom.uiuc.edu/graphics/pix/Special_Topics/Computational_Geometry/cone.html"><img
src="qh--cone.gif" alt="[cone]" align="middle" width="100"
height="100"></a>qhull -- convex hull and related structures</h1>

<p>The convex hull of a set of points is the smallest convex set
containing the points.  The Delaunay triangulation and furthest-site
Delaunay triangulation are equivalent to a convex hull in one
higher dimension.  Halfspace intersection abo