urceCode haxe"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="kw">var</span> plane:Mesh = <span class="kw">new</span> Mesh(<span class="kw">new</span> PlaneGeometry(<span class="dv">5000</span>, <span class="dv">5000</span>), 材质);</span>
<span id="cb1-2"><a href="#cb1-2" aria-hidden="true" tabindex="-1"></a><span class="kw">cast</span>(plane.geometry, PlaneGeometry).doubleSided = <span class="kw">true</span>; <span class="co">// 双面 贴图</span></span>
<span id="