c++ osg库读取wrl文件并显示
时间: 2023-08-16 14:09:35 浏览: 165
要使用OSG库读取wrl文件并显示,可以按照以下步骤操作:
1. 安装OSG库。可以从OSG官网下载安装包进行安装。
2. 编写C++程序,包含以下头文件:
```c++
#include <osg/Group>
#include <osgDB/ReadFile>
#include <osgViewer/Viewer>
```
3. 在程序中创建osgViewer::Viewer对象,并设置窗口的大小和标题:
```c++
osgViewer::Viewer viewer;
viewer.setUpViewInWindow(50, 50, 800, 600);
viewer.setCameraManipulator(new osgGA::TrackballManipulator());
viewer.getCamera()->setClearColor(osg::Vec4(0.9f, 0.9f, 0.9f, 1.0f));
viewer.realize();
```
4. 使用osgDB::readNodeFile函数读取wrl文件,并将其添加到osg::Group对象中:
```c++
osg::ref_ptr<osg::Node> root = osgDB::readNodeFile("path/to/file.wrl");
if (root.valid())
{
osg::ref_ptr<osg::Group> scene = new osg::Group;
scene->addChild(root.get());
viewer.setSceneData(scene.get());
}
```
5. 运行程序,即可在窗口中显示wrl文件的内容。
完整的代码示例:
```c++
#include <osg/Group>
#include <osgDB/ReadFile>
#include <osgViewer/Viewer>
#include <osgGA/TrackballManipulator>
int main(int argc, char** argv)
{
osgViewer::Viewer viewer;
viewer.setUpViewInWindow(50, 50, 800, 600);
viewer.setCameraManipulator(new osgGA::TrackballManipulator());
viewer.getCamera()->setClearColor(osg::Vec4(0.9f, 0.9f, 0.9f, 1.0f));
viewer.realize();
osg::ref_ptr<osg::Node> root = osgDB::readNodeFile("path/to/file.wrl");
if (root.valid())
{
osg::ref_ptr<osg::Group> scene = new osg::Group;
scene->addChild(root.get());
viewer.setSceneData(scene.get());
}
return viewer.run();
}
```
阅读全文