#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 <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 <osg/PagedLOD>

#include <osg/Camera>

#include <osgText/Text>

#include <osgGA/TrackballManipulator>

#include <osgGA/GUIEventHandler>

#include <osgGA/CameraManipulator>

#include <osgGA/StandardManipulator>

#include <osgGA/OrbitManipulator>

#include <osgGA/TrackballManipulator>

#include <osgUtil/IntersectionVisitor>

#include <osgUtil/LineSegmentIntersector>

osg::Camera* createTextHUD()

{

    osg::ref_ptr<osg::Geode> geode1 = new osg::Geode;

    osg::ref_ptr<osgText::Text> text1 = new osgText::Text;

    osg::ref_ptr<osg::Camera> camera1 = new osg::Camera;

    camera1->setViewMatrix(osg::Matrix::identity());

    camera1->setRenderOrder(osg::Camera::POST_RENDER);

    camera1->setClearMask(GL_DEPTH_BUFFER_BIT);

    camera1->setAllowEventFocus(false);

    camera1->setReferenceFrame(osg::Transform::ABSOLUTE_RF);

    camera1->setProjectionMatrixAsOrtho2D(-, , -, );

    text1->setFont("Fonts/simhei.ttf");

    text1->setCharacterSize();

    text1->setText(L"OSG 中文字体");

    text1->setPosition(osg::Vec3(0.0,0.0,0.0));

    geode1->getOrCreateStateSet()->setMode(GL_LIGHTING,osg::StateAttribute::OFF);

    geode1->addDrawable(text1);

    camera1->addChild(geode1.get());

    return camera1.release();

}

int main()

{

    osg::ref_ptr<osgViewer::Viewer> viewer1 = new osgViewer::Viewer;

    osg::ref_ptr<osg::Group> group1 = new osg::Group;

    //osg::ref_ptr<osg::Node> node1 = osgDB::readNodeFile("D:\\参考手册\\BIM\\osg\\build20190628.osgb");

    osg::ref_ptr<osg::Node> node2 = osgDB::readNodeFile("D:\\参考手册\\BIM\\osg\\build1.osgb");

    group1->addChild(node2.get());

    group1->addChild(createTextHUD());

    viewer1->setSceneData(group1.get());

    viewer1->setUpViewInWindow(,,,,);

    viewer1->run();

}