p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">RadiusOrSphere</span><span class="special">&gt;</span>
<span class="identifier">spherical</span><span class="special">(</span><span class="identifier">RadiusOrSphere</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">radius_