% geometric computing \paragraph{Smallest enclosing spheres} are commonly used as bounding volumes, for example, to speed up intersection tests. \begin{tabular}{l|ll} \textbf{smallest enclosing sphere} & \texttt{double} & exact \texttt{qmpq} (non opt.)\\\hline Bunny & 0.02 & 10 \\ Lion vase & 0.11 & 231 \\ David & 0.23 & 126 \\ Raptor & 0.6 & 370 \end{tabular} % models used for benchmarking \begin{figure} \centering \epsfig{file=figs/models.eps, width=\linewidth} \caption{Models used for benchmarking. Complexity (in triangles): Bunny: 69,451, Lion vase: 400k, David (simplified version): 700k, Raptor: 2M.} \label{fig:models} \end{figure}