shape's edges an odd number of times.</li>
<li><strong>Non-Zero</strong>: A point is inside the shape if the total winding number around the point is non-zero.</li>
<li><strong>Positive</strong>: Only regions with a positive winding number are considered inside.</li>
<li><strong>Negative</strong>: Only regions with a negative winding number are considered inside.</li>
</ul>
<hr />
<h2 id="overlay-rules"><a class="header" href="#overlay-rules">Overlay Rules</a></h2>
<p>Overlay rules define how two shapes int