that all scene tree elements inherit from." href="../h2d/Object.html">Object</a>&nbsp;&#8209;&gt;&nbsp;<a class="type" title="Bool - The standard Boolean type, which can either be true or false." href="../Bool.html">Bool</a></code></h3><div class="doc"><p>Sent before filter begins rendering.
Filter (and it's object tree) won't be rendered if callback returns <code><a href="../Bool.html">false</a></code>.</p></div></div><div class="field "><a name="onLeaveFilter"></a><h3 class="anchor"><code><a href="#onLeav