osgGA::TrackballManipulator使用
时间: 2024-02-03 10:03:44 浏览: 83
Qt加载OsgEarth的新方式osgQOpenGL简介
osgGA::TrackballManipulator可以通过以下步骤进行使用:
1. 创建一个osgGA::TrackballManipulator对象:
```cpp
osg::ref_ptr<osgGA::TrackballManipulator> manipulator = new osgGA::TrackballManipulator();
```
2. 将该对象添加到Viewer或ViewerBase中:
```cpp
viewer->setCameraManipulator(manipulator);
```
3. 在创建场景时,将窗口设置为可接受输入事件:
```cpp
viewer->addEventHandler(new osgViewer::StatsHandler);
viewer->addEventHandler(new osgViewer::WindowSizeHandler);
viewer->addEventHandler(new osgViewer::ThreadingHandler);
viewer->addEventHandler(new osgViewer::HelpHandler);
viewer->addEventHandler(new osgGA::StateSetManipulator(viewer->getCamera()->getOrCreateStateSet()));
viewer->addEventHandler(new osgViewer::RecordCameraPathHandler);
viewer->addEventHandler(new osgViewer::LODScaleHandler);
viewer->addEventHandler(new osgGA::TrackballManipulator);
viewer->setSceneData(root);
```
4. 运行程序,使用鼠标和键盘来控制场景的交互操作。
osgGA::TrackballManipulator提供了许多可配置的选项,例如设置旋转、缩放、平移的敏感度、设置最小和最大缩放级别、设置是否启用地球模式等。用户可以根据自己的需求来进行配置。
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