osg::NodeVisitor osg3.4.0

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#ifdef _WIN32
#include <Windows.h>
#endif // _WIN32
#include<iostream>

#include <osgViewer/Viewer>
#include <osgViewer/ViewerEventHandlers> 
#include <osgViewer/CompositeViewer> 
#include <osgDB/ReadFile>
#include <osg/Geode>
#include <osg/Node>
#include <osg/Geometry>
#include <osgGA/TrackballManipulator>
#include <osg/GraphicsContext>
#include <osg/ShapeDrawable>
#include <osg/Material>
#include <osg/Image>
#include <osg/Texture2D>
#include <osg/TexEnv>
#include <osg/TexGen>
#include <osg/NodeVisitor>
#include <osg/MatrixTransform>
#include <osg/PositionAttitudeTransform>
#include <osg/AnimationPath>
#include <osg/Matrixd>

#include <osgGA/GUIEventHandler>
#include <osgGA/CameraManipulator>
#include <osgGA/StandardManipulator>
#include <osgGA/OrbitManipulator>
#include <osgGA/TrackballManipulator>
#include <osgUtil/IntersectionVisitor>
#include <osgUtil/LineSegmentIntersector>

class BoundVisitor :public osg::NodeVisitor
{
public:
    BoundVisitor() :osg::NodeVisitor(TRAVERSE_ALL_CHILDREN), _indent(0) 
    {
        std::cout << "--" << std::endl;
    }


    virtual void apply(osg::Geode &geode)
    {
        //osg::Drawable *drawable1=  geode.getDrawable(0);
        unsigned int count = geode.getNumDrawables();
        for (int i = 0; i < count; i++)
        {
            osg::Geometry *geometry = geode.getDrawable(i)->asGeometry();
            if (!geometry)
            {
                continue;
            }

            // 顶点数据
            osg::Vec3Array* vertices = dynamic_cast<osg::Vec3Array*>(geometry->getVertexArray());
            //osg::Vec3Array vertices = geometry->getVertexArray();
            int vertexlNum = vertices->size();
            for (int j = 0; j<vertexlNum; j++) {
                //dstSubset.vertexs.push_back(vertices->at(j).x());
                //dstSubset.vertexs.push_back(vertices->at(j).y());
                //dstSubset.vertexs.push_back(vertices->at(j).z());
                std::cout << "x:" << vertices->at(j).x() << "  y:" << vertices->at(j).y() << "  z:" << vertices->at(j).z() << std::endl;
            }
        }
    }

protected:
    int _indent;
};


int main()
{
    osg::ref_ptr<osgViewer::Viewer> viewer1 = new osgViewer::Viewer;
    osg::ref_ptr<osg::Node> node1 = osgDB::readNodeFile("D:\参考手册\BIM\osg\build1.OSGB");
    BoundVisitor bv;

    node1->accept(bv);
    viewer1->setSceneData(node1);
    

    viewer1->setUpViewInWindow(200, 200, 800, 600, 0);

    return viewer1->run();
}