点光源
<h1>点光源</h1>
<h2>点光源配置对象 - BCore.Viewer.Light.PointLightConfig</h2>
<h3>构造函数</h3>
<pre><code class="language-javascript">new BCore.Viewer.Light.PointLightConfig()</code></pre>
<h3>属性</h3>
<table>
<thead>
<tr>
<th>参数名</th>
<th>类型</th>
<th>默认值</th>
<th>说明</th>
</tr>
</thead>
<tbody>
<tr>
<td>color</td>
<td>string</td>
<td>"#FFFFFF"</td>
<td>光源颜色</td>
</tr>
<tr>
<td>intensity</td>
<td>number</td>
<td>1</td>
<td>光源强度</td>
</tr>
<tr>
<td>distance</td>
<td>number</td>
<td>100</td>
<td>光源范围</td>
</tr>
<tr>
<td>decay</td>
<td>number</td>
<td>2</td>
<td>衰减</td>
</tr>
<tr>
<td>position</td>
<td>{ x: number, y: number, z: number }</td>
<td>{ x: 0, y: 0, z: 20 }</td>
<td>光源位置</td>
</tr>
<tr>
<td>castShadow</td>
<td>boolean</td>
<td>false</td>
<td>是否投射阴影</td>
</tr>
<tr>
<td>mapSize</td>
<td>number</td>
<td>2048</td>
<td>不宜过大</td>
</tr>
<tr>
<td>radius</td>
<td>number</td>
<td>1.5</td>
<td>光源半径</td>
</tr>
<tr>
<td>bias</td>
<td>number</td>
<td>0.0001</td>
<td>偏移量</td>
</tr>
<tr>
<td>normalBias</td>
<td>number</td>
<td>2</td>
<td>法线偏移</td>
</tr>
</tbody>
</table>
<ul>
<li>详细说明请参考
<a href="https://threejs.org/docs/index.html?q=shad#api/en/lights/shadows/LightShadow">LightShadow API</a></li>
</ul>
<hr />
<h2>方法总览</h2>
<ul>
<li><code>addPointLight(id: string, lightConfig: PointLightConfig)</code> 添加点光源</li>
<li><code>deletePointLight(id: string)</code> 删除点光源</li>
<li><code>getPointLightConfig(id: string)</code> 获取点光源参数</li>
<li><code>setPointLightConfig(id: string, config: PointLightConfig)</code> 设置点光源参数</li>
<li><code>clearPointLights()</code> 清空所有点光源</li>
</ul>
<h2>方法示例</h2>
<h3>1. 添加点光源</h3>
<pre><code class="language-javascript">addPointLight(id: string, lightConfig: PointLightConfig)</code></pre>
<h4>参数</h4>
<table>
<thead>
<tr>
<th>参数名</th>
<th>必选</th>
<th>类型</th>
<th>说明</th>
</tr>
</thead>
<tbody>
<tr>
<td>id</td>
<td>是</td>
<td>string</td>
<td>光源Id</td>
</tr>
<tr>
<td>lightConfig</td>
<td>是</td>
<td>BCore.Viewer.Light.PointLightConfig</td>
<td>光源参数</td>
</tr>
</tbody>
</table>
<h4>示例</h4>
<pre><code class="language-javascript">let mPointLightConfig = new BCore.Viewer.Light.PointLightConfig();
mViewer3D.addPointLight('name', mPointLightConfig);</code></pre>
<p><br></p>
<h3>2. 删除点光源</h3>
<pre><code class="language-javascript">deletePointLight(id: string)</code></pre>
<h4>参数</h4>
<table>
<thead>
<tr>
<th>参数名</th>
<th>必选</th>
<th>类型</th>
<th>说明</th>
</tr>
</thead>
<tbody>
<tr>
<td>id</td>
<td>是</td>
<td>string</td>
<td>光源Id</td>
</tr>
</tbody>
</table>
<h4>示例</h4>
<pre><code class="language-javascript">let mPointLightConfig = new BCore.Viewer.Light.PointLightConfig();
mViewer3D.addPointLight('name', mPointLightConfig);
mViewer3D.deletePointLight('name');</code></pre>
<p><br></p>
<h3>3. 获取点光源参数</h3>
<h4>简要描述</h4>
<p>获取点光源参数</p>
<h4>接口</h4>
<pre><code class="language-javascript">getPointLightConfig(id: string)</code></pre>
<h4>参数</h4>
<table>
<thead>
<tr>
<th>参数名</th>
<th>必选</th>
<th>类型</th>
<th>说明</th>
</tr>
</thead>
<tbody>
<tr>
<td>id</td>
<td>是</td>
<td>string</td>
<td>光源Id</td>
</tr>
</tbody>
</table>
<h4>示例</h4>
<pre><code class="language-javascript">let mPointLightConfig = new BCore.Viewer.Light.PointLightConfig();
mViewer3D.addPointLight('name', mPointLightConfig);
let config = mViewer3D.getPointLightConfig('name');</code></pre>
<p><br></p>
<h3>4. 设置点光源参数</h3>
<pre><code class="language-javascript">setPointLightConfig(id: string, config: PointLightConfig)</code></pre>
<h4>参数</h4>
<table>
<thead>
<tr>
<th>参数名</th>
<th>必选</th>
<th>类型</th>
<th>说明</th>
</tr>
</thead>
<tbody>
<tr>
<td>id</td>
<td>是</td>
<td>string</td>
<td>光源Id</td>
</tr>
<tr>
<td>config</td>
<td>是</td>
<td>PointLightConfig</td>
<td>光源配置</td>
</tr>
</tbody>
</table>
<h4>示例</h4>
<pre><code class="language-javascript">let mPointLightConfig = new BCore.Viewer.Light.PointLightConfig();
mViewer3D.addPointLight('name', mPointLightConfig);
mPointLightConfig.castShadow = true;
m3D.setPointLightConfig('name', mPointLightConfig);</code></pre>
<p><br></p>
<h3>5. 清空所有点光源</h3>
<pre><code class="language-javascript">clearPointLights()</code></pre>
<h4>示例</h4>
<pre><code class="language-javascript">let mPointLightConfig = new BCore.Viewer.Light.PointLightConfig();
mViewer3D.addPointLight('name', mPointLightConfig);
mViewer3D.clearPointLights();</code></pre>
<hr />
<p>以上是 '点光源' 的说明文档，包含构造函数、参数、方法以及示例代码。</p>