>(</span><span class="string">"polygon((2.0 1.3, 2.4 1.7, 2.8 1.8, 3.4 1.2, 3.7 1.6,3.4 2.0, 4.1 3.0"</span>
        <span class="string">", 5.3 2.6, 5.4 1.2, 4.9 0.8, 2.9 0.7,2.0 1.3))"</span><span class="special">,</span> <span class="identifier">poly</span><span class="special">);</span>

    <span class="identifier">polygon</span> <span class="identifier">hull</span><span class="special">;</span>
    <span class="identifier">boost</span><span class="special">::</span><span class="identifier">geometry</s