14、osg中通过一个模型，将其中一个模型隐藏掉输出成另一个模型（osg文件）

#include "stdafx.h"
#include <osgDB/Registry>
#include <osgDB/ReadFile>
#include <osgDB/ReaderWriter>
#include <osgDB/WriteFile>
#include <osg/Node>
#include <osgViewer/Viewer>
int _tmain(int argc, _TCHAR* argv[])
{
osgViewer::Viewer viewer ;
//读取模型
osg::Node* node = osgDB::readNodeFile("fountain.osgt") ;
//隐藏结点
node ->asGroup() ->getChild(0) ->setNodeMask(0) ;
viewer.setSceneData(node) ;
//输出结点到free.osg中
osgDB::writeNodeFile(*(viewer.getSceneData()), "free.osg", osgDB::Registry::instance() ->getOptions());
viewer.realize();
viewer.run();
return 0;
}