环境光源
<h1>环境光源</h1>
<h2>方法总览</h2>
<ul>
<li><code>openAmbientLight()</code> 打开环境光，引擎默认打开</li>
<li><code>closeAmbientLight()</code> 关闭环境光，引擎默认打开</li>
<li><code>setAmbientLight(color,intensity)</code> 设置环境光</li>
<li><code>getAmbientLight()</code> 返回环境光配置</li>
</ul>
<h3>1 <strong>打开环境光</strong></h3>
<ul>
<li><strong>简要描述</strong>：打开环境光，默认情况下环境光是打开的。</li>
<li><strong>接口</strong>：<code>openAmbientLight()</code></li>
<li><strong>示例</strong>：
<pre><code class="language-javascript">let viewer3DConfig = new BCore.Viewer.Viewer3DConfig();
let viewer3d = new BCore.Viewer.Viewer3D(viewer3DConfig);
viewer3d.openAmbientLight();</code></pre></li>
</ul>
<p><br></p>
<h3>2. <strong>关闭环境光</strong></h3>
<ul>
<li><strong>简要描述</strong>：关闭环境光。</li>
<li><strong>接口</strong>：<code>closeAmbientLight()</code></li>
<li><strong>示例</strong>：
<pre><code class="language-javascript">let viewer3DConfig = new BCore.Viewer.Viewer3DConfig();
let viewer3d = new BCore.Viewer.Viewer3D(viewer3DConfig);
viewer3d.closeAmbientLight();</code></pre></li>
</ul>
<p><br></p>
<h3>3. <strong>设置环境光</strong></h3>
<ul>
<li><strong>简要描述</strong>：设置环境光的颜色和强度。</li>
<li><strong>接口</strong>：<code>setAmbientLight(color, ?intensity)</code></li>
<li><strong>参数</strong>：
<ul>
<li><code>color</code>: <code>string</code> - 光源颜色，必选。</li>
<li><code>intensity</code>: <code>number</code> - 光源强度，默认为1，可选。</li>
</ul></li>
<li><strong>示例</strong>：
<pre><code class="language-javascript"> let viewer3DConfig = new BCore.Viewer.Viewer3DConfig();
let viewer3d = new BCore.Viewer.Viewer3D(viewer3DConfig);
viewer3d.setAmbientLight('#FFFFFF', 0.5);</code></pre></li>
</ul>
<p><br></p>
<h3>4. <strong>返回环境光配置</strong></h3>
<ul>
<li><strong>简要描述</strong>：返回当前环境光的颜色和强度。</li>
<li><strong>接口</strong>：<code>getAmbientLight()</code></li>
<li><strong>示例</strong>：
<pre><code class="language-javascript"> let viewer3DConfig = new BCore.Viewer.Viewer3DConfig();
let viewer3d = new BCore.Viewer.Viewer3D(viewer3DConfig);
let ambientLightConfig = viewer3d.getAmbientLight();</code></pre></li>
<li><strong>返回值</strong>：
<ul>
<li><code>AmbientLight</code>: 返回当前的环境光颜色和强度。</li>
</ul></li>
</ul>