OSG和osgQt编译教程，实测通过
一、下载OpenSceneGraph
OpenSceneGraphhttps://github.com/openscenegraph/OpenSceneGraph
二、使用CMAKE编译OpenSceneGraph
1.打开cmake，配置源代码目录
2. CMAKE_INSTALL_PREFIX设置为install文件夹，生成VS工程
3. 使用VS2022打开工程，编译ALL_BUILD和INSTALL，在OpenSceneGraph-master\install目录下生成头文件、lib文件和动态库
三、下载osgQt
osgQthttps://github.com/openscenegraph/osgQt
四、使用CMAKE编译osgQt
1.修改osgQt-master/CMakeLists.txt，配置OSG和QT依赖（重点，不修改cmake会报错）
找到以下的行，在FIND_PACKAGE(OpenSceneGraph...上面添加一行，set(CMAKE_PREFIX_PATH "path1;paht2")，注意path1和ath2使用分号分隔，path1为上面的OSG生成目录，即OpenSceneGraph-master/install，path2为QT的安装目录，本案例为Qt/5.15.2/msvc2019_64。版本号3.7.0为OSG的版本号
如下：
PROJECT(osgQt)set(CMAKE_PREFIX_PATH "C:/Users/115627/Desktop/OpenSceneGraph-master/OpenSceneGraph-master/install;C:/Qt/5.15.2/msvc2019_64")
FIND_PACKAGE(OpenSceneGraph 3.7.0 REQUIRED osgDB osgGA osgUtil osgText osgViewer osgWidget)
SET(OPENSCENEGRAPH_SOVERSION 145)SET(OSG_PLUGINS osgPlugins-${OPENSCENEGRAPH_VERSION})SET(OSG_PLUGIN_PREFIX "")IF (CYGWIN)SET(OSG_PLUGIN_PREFIX "cygwin_")
ENDIF()IF(MINGW)SET(OSG_PLUGIN_PREFIX "mingw_")
ENDIF()2..打开cmake，配置源代码目录
3. CMAKE_INSTALL_PREFIX设置为install文件夹，生成VS工程
4. 使用VS2022打开工程，编译ALL_BUILD和INSTALL，在install目录下生成头文件、lib文件和动态库
五、配置环境变量
将OSG和osgQt的动态库加入到系统环境变量，方便后续测试测序找到
六、Qt 测试程序
启动qt creator，新建测试项目，配置头文件路径， lib路径即lib文件，pro配置如下：
QT += core guigreaterThan(QT_MAJOR_VERSION, 4): QT += widgetsCONFIG += c++17 opengl# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0SOURCES += \main.cpp \widget.cppHEADERS += \widget.hFORMS += \widget.ui# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += targetINCLUDEPATH += C:/Users/115627/Desktop/OpenSceneGraph-master/OpenSceneGraph-master/install/include \C:/Users/115627/Desktop/OpenSceneGraph-master/osgQt-master/install/includeCONFIG(debug,debug|release){LIBS += -LC:\Users\115627\Desktop\OpenSceneGraph-master\OpenSceneGraph-master\install\lib \-LC:\Users\115627\Desktop\OpenSceneGraph-master\osgQt-master\install\lib \-lOpenThreadsd \-losgd \-losgDBd \-losgGAd \-losgUtild \-losgViewerd \-losgQOpenGLd
}else {LIBS += -LC:\Users\115627\Desktop\OpenSceneGraph-master\OpenSceneGraph-master\install\lib \-LC:\Users\115627\Desktop\OpenSceneGraph-master\osgQt-master\install\lib \-lOpenThreads \-losg \-losgDB \-losgGA \-losgUtil \-losgViewer \-losgQOpenGL
}头文件：
#ifndef WIDGET_H
#define WIDGET_H#include <QWidget>#include <osgQOpenGL/osgQOpenGLWidget>QT_BEGIN_NAMESPACE
namespace Ui {
class Widget;
}
QT_END_NAMESPACEclass Widget : public QWidget
{Q_OBJECTpublic:Widget(QWidget *parent = nullptr);~Widget();protected slots:void initOSG();private slots:void on_pushButton_clicked();private:Ui::Widget *ui;osgQOpenGLWidget* osgWidget;
};#endif // WIDGET_HCPP文件
#include "widget.h"
#include "ui_widget.h"
#include <osgViewer/Viewer>
#include <osg/Node>
#include <osgDB/ReadFile>
#include <osgGA/TrackballManipulator>
#include <osg/MatrixTransform>
#include <osg/ShapeDrawable>Widget::Widget(QWidget *parent): QWidget(parent), ui(new Ui::Widget)
{ui->setupUi(this);osgWidget = new osgQOpenGLWidget(ui->widget); // 指定osg窗口显示位置osgWidget->setGeometry(ui->widget->geometry()); // 指定osg窗口显示大小// connect(osgWidget, SIGNAL(initialized()), this, SLOT(initOSG()));
}Widget::~Widget()
{delete ui;
}void Widget::initOSG()
{osgViewer::Viewer* pViewer = osgWidget->getOsgViewer();pViewer->setCameraManipulator(new osgGA::TrackballManipulator);auto root = new osg::Group;auto transform = new osg::MatrixTransform;osg::Cylinder* cylinder = new osg::Cylinder( osg::Vec3( 0.f, 0.f, 0.f ), 1.f, 1.f );osg::ShapeDrawable* sd = new osg::ShapeDrawable( cylinder );sd->setColor( osg::Vec4( 0.8f, 0.5f, 0.2f, 1.f ) );osg::ref_ptr<osg::Geode> geode = new osg::Geode();geode->addDrawable(sd);pViewer->setSceneData(geode);
}void Widget::on_pushButton_clicked()
{initOSG();
}运行结果
