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<p><a name="TOP"><b>Up:</b></a> <a
href="http://www.geom.umn.edu/locate/qhull">Home page for Qhull</a><br>
<b>Up:</b> <a href="qh-faq.htm">FAQ about Qhull</a><br>
<b>To:</b> <a href="#TOC">Qhull manual: Table of Contents</a>
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<b>To:</b> <a href="#synopsis">Synopsis and examples of Qhull</a>
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<b>Dn:</b> <a href="qh-eg.htm">Description of Qhull examples</a><br>
<b>Dn:</b> <a href="qh-impre.htm">Imprecision in Qhull</a><br>
<b>Dn:</b> <a href="qh-opt.htm">Options for using Qhull</a><br>
<b>Dn:</b> <a href="qh-in.htm">Qhull internals</a><br>
<b>Dn:</b> <a href="qh-rbox.htm">Rbox, Qhull's input generator</a><br>
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<h1><a
href="http://www.geom.umn.edu/graphics/pix/Special_Topics/Computational_Geometry/fixed.html"><img
src="qh--rand.gif" alt="[random-fixed]" align="middle"
width="100" height="100"></a> Qhull manual </h1>
<p>Qhull is a general dimension code for computing convex hulls,
Delaunay triangulations, halfspace intersections about a point, Voronoi
diagrams, furthest-site Delaunay triangulations, and
furthest-site Voronoi diagrams. These structures have
applications in science, engineering, statistics, and
mathematics. See <a
href="http://www.ifor.math.ethz.ch/ifor/staff/fukuda/polyfaq/polyfaq.html">Fukuda's
introduction</a> to convex hulls, Delaunay triangulations,
Voronoi diagrams, and linear programming. For a detailed
introduction, see O'Rourke [<a href="#orou94">'94</a>], <i>Computational
Geometry in C</i>.</p>
<p>Qhull implements the Quickhull algorithm for computing the
convex hull. Qhull handles roundoff errors from floating point
arithmetic. It can approximate a convex hull. It includes options
for hull volume, facet area, multiple output formats, and
graphical output. </p>
<p><i>Brad Barber, Cambridge MA, January 8, 1998</i></p>
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