图纸操作
<h1>图纸操作</h1>
<h2>构造函数</h2>
<pre><code class="language-javascript">new BCore2DFast.Viewer.Viewer2D(config)</code></pre>
<p><strong>参数：</strong></p>
<ul>
<li><strong>config</strong>: <code>BCore2DFast.Viewer.Viewer2DConfig</code> - 二维图纸视图对象的配置。</li>
</ul>
<h2>方法</h2>
<ol>
<li>
<p><strong>addDrawing(fileId)</strong></p>
<ul>
<li><strong>简要描述</strong>: 在场景中添加图纸。</li>
<li><strong>接口</strong>: <code>addDrawing(fileId)</code></li>
<li><strong>参数</strong>:
<ul>
<li><strong>fileId</strong>: (必选) <code>string</code> - 图纸访问凭证。</li>
</ul></li>
<li><strong>返回值</strong>: <code>void</code> - 返回值为空。</li>
</ul>
<p><strong>示例</strong>:</p>
<pre><code class="language-javascript">var viewer2dConfig = new BCore2DFast.Viewer.Viewer2DConfig();
var viewer2D = new BCore2DFast.Viewer.Viewer2D(viewer2dConfig);
viewer2D.initViewer2D(accessToken, () =&gt; {
viewer2D.addDrawing('abc');
});</code></pre>
</li>
<li>
<p><strong>removeDrawing(fileId)</strong></p>
<ul>
<li><strong>简要描述</strong>: 从场景中移除图纸。</li>
<li><strong>接口</strong>: <code>removeDrawing(fileId)</code></li>
<li><strong>参数</strong>:
<ul>
<li><strong>fileId</strong>: (必选) <code>string</code> - 图纸访问凭证。</li>
</ul></li>
<li><strong>返回值</strong>: <code>void</code> - 返回值为空。</li>
</ul>
<p><strong>示例</strong>:</p>
<pre><code class="language-javascript">var viewer2dConfig = new BCore2DFast.Viewer.Viewer2DConfig();
var viewer2D = new BCore2DFast.Viewer.Viewer2D(viewer2dConfig);
viewer2D.initViewer2D(accessToken, () =&gt; {
viewer2D.removeDrawing(&quot;abc&quot;);
});</code></pre>
</li>
</ol>
<h3>总结</h3>
<p><code>BCore2DFast.Viewer.Viewer2D</code> 提供了简便的方法来添加和移除图纸，通过 <code>fileId</code> 对图纸进行管理。在使用这些方法之前，需先初始化图对象。</p>