types"><span class="type">integer</span></span>
         : ring index (1-based)
        </li>
        <li><span class="parameter">from</span>
            <span class="types"><span class="type">number</span></span>
         : from angle in radians
        </li>
        <li><span class="parameter">to</span>
            <span class="types"><span class="type">number</span></span>
         : to angle in radians
        </li>
        <li><span class="parameter">level</span>
            <span class="types"><span c