source bold">Source</dt><dd class="tag-source"><ul><li><a href="src_engineUtilities.js.html">src/engineUtilities.js</a>, <a href="src_engineUtilities.js.html#line797">line 797</a></li></ul></dd></div></dl><div class="method-member-container mt-20"><strong>Returns:</strong><dl class="param-type"><dt>Type:&nbsp;</dt><dd><span class="param-type">number</span></dd></dl></div><h3 class="name has-anchor" id="scale"><span class="type-signature"></span>scale<span class="signature">(scale, alphaScale<span class="sig