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This article mainly introduces "what is the way to find a specific node in OSG". In daily operation, I believe that many people have doubts about how to find a specific node in OSG. Xiaobian consulted all kinds of materials and sorted out a simple and useful method of operation. I hope it will be helpful for you to answer the question of "what is the way to find a specific node in OSG?" Next, please follow the editor to study!

In order to find the desired node in OSG and act on it accordingly, you can inherit a class from the NodeVisitor class

[download id= "14"] elaborated on this problem. Here is a class I wrote to find a node with a specified name and type:

Class findGeoNamedNode:public osg::NodeVisitor {public:findGeoNamedNode (); findGeoNamedNode (const std::string name): osg::NodeVisitor (TRAVERSE_ALL_CHILDREN) / / Set traverse mode {resultNode=NULL;this- > name=name;} virtual void apply (osg::Node & searchNode) {if (searchNode.getName () = = name) {osg::Geode* dynamicTry=dynamic_cast (& searchNode); if (dynamicTry) {resultNode=dynamicTry;} traverse (searchNode);} osg::Geode* getNode () {return resultNode;} private:osg::Geode* resultNode;std::string name;}

To use this VISITOR class, you only need to call the following functions

Osg::Node* testNode=NULL;testNode=dynamic_cast (osgDB::readNodeFile ("d:\ 1.3ds")); findGeoNamedNode* visitor=new findGeoNamedNode ("Box01"); testNode- > accept (* visitor)

It is easy to use, thanks to the correct application of the visitor pattern.

At this point, the study of "what is the way to find a specific node in OSG" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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