节点访问器

查找节点名称

#include <Windows.h>
#include <osg\Node>
#include <osg\Group>
#include <osg\Geometry>
#include <osgViewer/Viewer>

class FindNameVisitor : public osg::NodeVisitor
{
public:
	FindNameVisitor(const std::string& name, TraversalMode tm = TRAVERSE_ALL_CHILDREN):
		osg::NodeVisitor(tm),
		name_(name)
	{

	}

	~FindNameVisitor()
	{

	}

	virtual void apply(osg::Node& node) override
	{
		if (node.getName() == name_)
			node_ = &node;

		std::cout << "Node Name:" << node.getName() << std::endl;

		traverse(node);
	}

	osg::Node* getName() { return node_.get(); }

private:
	std::string name_;
	osg::ref_ptr<osg::Node> node_;
};

int main()
{
	osgViewer::Viewer viewer;

	osg::ref_ptr<osg::Group> group = new osg::Group();
	group->addChild(osgDB::readNodeFile("cow.osg"));
	viewer.setSceneData(group);

	FindNameVisitor nv("cow.osg");
	group->accept(nv);
	osg::ref_ptr<osg::Node> node = nv.getName();
	std::cout <<"Find Node:"<< node.get() << std::endl;

	viewer.addEventHandler(new PickHander());
	viewer.addEventHandler(new osgViewer::StatsHandler());
	viewer.setUpViewInWindow(100, 100, 500, 400);
	return viewer.run();
}

节点访问器

原文：https://www.cnblogs.com/shiguoliang/p/15195545.html