vtk.js

vtk.js


vtkMouseCameraTrackballRotateManipulator

<p><code>vtkMouseCameraTrackballRotateManipulator</code> 是 <code>vtk.js</code> 中用于相机旋转操作的工具。它允许用户通过鼠标拖动来旋转 3D 视图,帮助更好地查看和操作场景。</p> <h3>主要功能</h3> <ul> <li><strong>相机旋转</strong>:通过鼠标拖动来旋转相机视角,使用户可以从不同角度查看 3D 模型。</li> <li><strong>直观操作</strong>:提供了一种自然的交互方式,适用于各种鼠标和触摸设备。</li> <li><strong>与 <code>vtk.js</code> 的集成</strong>:与 <code>vtkRenderWindow</code> 和 <code>vtkRenderWindowInteractor</code> 紧密集成,易于配置和使用。</li> </ul> <h3>主要方法</h3> <ol> <li> <p><strong><code>constructor()</code></strong></p> <ul> <li><strong>描述</strong>:初始化 <code>vtkMouseCameraTrackballRotateManipulator</code> 实例。</li> <li> <p><strong>用法</strong>:</p> <p><code>const rotateManipulator = vtkMouseCameraTrackballRotateManipulator.newInstance();</code></p> </li> </ul> </li> <li> <p><strong><code>setRenderWindow(renderWindow)</code></strong></p> <ul> <li><strong>描述</strong>:将操控器与 <code>vtkRenderWindow</code> 关联。</li> <li> <p><strong>用法</strong>:</p> <p><code>rotateManipulator.setRenderWindow(renderWindow);</code></p> </li> </ul> </li> <li> <p><strong><code>handleMouseDown(event)</code></strong></p> <ul> <li><strong>描述</strong>:处理鼠标按下事件,启动旋转操作。</li> <li> <p><strong>用法</strong>:</p> <p><code>rotateManipulator.handleMouseDown(event);</code></p> </li> </ul> </li> <li> <p><strong><code>handleMouseMove(event)</code></strong></p> <ul> <li><strong>描述</strong>:处理鼠标移动事件,根据移动更新相机的旋转。</li> <li> <p><strong>用法</strong>:</p> <p><code>rotateManipulator.handleMouseMove(event);</code></p> </li> </ul> </li> <li> <p><strong><code>handleMouseUp(event)</code></strong></p> <ul> <li><strong>描述</strong>:处理鼠标释放事件,结束旋转操作。</li> <li> <p><strong>用法</strong>:</p> <p><code>rotateManipulator.handleMouseUp(event);</code></p> </li> </ul> </li> <li> <p><strong><code>setInteractionStyle(style)</code></strong></p> <ul> <li><strong>描述</strong>:设置交互样式,以定义旋转操作的行为。</li> <li> <p><strong>用法</strong>:</p> <p><code>rotateManipulator.setInteractionStyle(style);</code></p> </li> </ul> </li> </ol> <h3>示例代码</h3> <p>下面是一个简单的使用 <code>vtkMouseCameraTrackballRotateManipulator</code> 的示例:</p> <pre><code class="language-javascript">import vtk from '@kitware/vtk.js'; import vtkRenderer from '@kitware/vtk.js/Rendering/Core/Renderer'; import vtkRenderWindow from '@kitware/vtk.js/Rendering/Core/RenderWindow'; import vtkRenderWindowInteractor from '@kitware/vtk.js/Rendering/Core/RenderWindowInteractor'; import vtkMouseCameraTrackballRotateManipulator from '@kitware/vtk.js/Interactions/Manipulators/MouseCameraTrackballRotateManipulator'; // 创建渲染器和渲染窗口 const renderer = vtkRenderer.newInstance(); const renderWindow = vtkRenderWindow.newInstance(); renderWindow.addRenderer(renderer); // 创建交互器并将其与渲染窗口关联 const interactor = vtkRenderWindowInteractor.newInstance(); const rotateManipulator = vtkMouseCameraTrackballRotateManipulator.newInstance(); interactor.setRenderWindow(renderWindow); interactor.setManipulator(rotateManipulator); // 启动交互 interactor.initialize(); interactor.start(); </code></pre> <p>总结</p> <p>vtkMouseCameraTrackballRotateManipulator 提供了一种流畅的方式来控制相机旋转,使用户能够通过简单的鼠标操作旋转视角,查看 3D 模型的不同部分。这种操控器适合用于各种 3D 视图应用程序,提升了用户的交互体验。</p>

页面列表

ITEM_HTML