OSG简单读取文件

就是hello world
编译好osg以后，设置好include和lib，以及输入文件

#include<osgViewer/Viewer>
#include<osg/Node>
#include<osg/Geode>
#include<osg/Group>
#include<osgDB/ReadFile>
#include<osgDB/WriteFile> # 写文件暂时不用
#include<osgUtil/Optimizer>

void main()
{
	osg::ref_ptr<osgViewer:Viewer> viewer = new osgViewer();
	osg::ref_ptr<osg::Group> root = new osg::Group();
	osg::ref_ptr<osg::Node> node = osgDB::readNodeFile("C:\\Users\\DELL\\Desktop\\boom.osg");
	root -> addChild(node.get());
	osgUtil::Oprimizer optimizer;
	optimizer.optimize(root.get());
	viewer -> setSceneData(root.get());
	viewer -> setUpViewInWindow(600, 100, 800, 600);
	viewer -> realize();
	viewer -> run();``