OSGQt編譯安裝

---

效果演示

 

1、准備工作

• 最新版的osg中不附帶osgQt源碼，所以需要單獨下載編譯

• 在編譯osgQt前需要先編譯osg源碼，osg編譯安裝看這里

• 編譯osgQt的環境與之前編譯osg源碼一樣

 

2、osgQt下載

• github

• 可使用git下載：

  git clone [e-mail]:openscenegraph/osgQt.git
  

  　　

 

3、配置環境變量

• osg：編譯好后按OSG編譯安裝-MSVC中方式配置環境變量

• msvc2017_64：由於這里使用msvc64編譯，所以需要添加相應的環境變量

  • 打開環境變量窗口

  • 加入如下路徑（需要修改為自己的Qt安裝路徑）

    D:\Qt\5.14.2\msvc2017_64\bin
    D:\Qt\5.14.2\msvc2017_64\lib

     

    

• 環境變量配置后重啟電腦使環境變量生效

 

4、CMake編譯

• 具體步驟和編譯osg差不多

• 將CMakelists.txt拖入CMake中，設置好編譯后的路徑build

 

• 點擊Configure，這里的選擇必須與osg編譯一樣（如果沒配置環境變量，則這一步會報錯，顯示找不到Qt5Config.cmake等文件）

 

• 修改CMAKE_INSTALL_PREFIX

 

• 點擊Configure -> Generate -> Open Project

 

5、Visual Studio編譯

• 后續步驟就和編譯osg一樣，編譯好osgQt后，有如下4個文件夾，將文件夾中內容復制到osg安裝路徑下對應文件夾下即可（編譯后會有兩個lib）

 

6、Qt Demo

• pro文件添加

INCLUDEPATH += D:/OSG/install/include
DEPENDPATH += D:/OSG/install/include
​
win32:CONFIG(release, debug|release): LIBS += -LD:/OSG/install/lib/ -losgQOpenGL
else:win32:CONFIG(debug, debug|release): LIBS += -LD:/OSG/install/lib/ -losgQOpenGLd
​
win32:CONFIG(release, debug|release): LIBS += -LD:/OSG/install/lib/ -losgViewer
else:win32:CONFIG(debug, debug|release): LIBS += -LD:/OSG/install/lib/ -losgViewerd
​
win32:CONFIG(release, debug|release): LIBS += -LD:/OSG/install/lib/ -losgGA
else:win32:CONFIG(debug, debug|release): LIBS += -LD:/OSG/install/lib/ -losgGAd
​
​
win32:CONFIG(release, debug|release): LIBS += -LD:/OSG/install/lib/ -losgDB
else:win32:CONFIG(debug, debug|release): LIBS += -LD:/OSG/install/lib/ -losgDBd
​
win32:CONFIG(release, debug|release): LIBS += -LD:/OSG/install/lib/ -losg
else:win32:CONFIG(debug, debug|release): LIBS += -LD:/OSG/install/lib/ -losgd

 

 

• ui文件添加一個button，一個widget

• widget.h

#ifndef WIDGET_H
#define WIDGET_H
​
#include <QWidget>
#include <osgQOpenGL/osgQOpenGLWidget>
​
QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE
​
class Widget : public QWidget
{
    Q_OBJECT
​
public:
    Widget(QWidget *parent = nullptr);
    ~Widget();
​
protected slots:
    void initOSG();
​
private slots:
    void on_pushButton_clicked();
​
private:
    Ui::Widget *ui;
​
    osgQOpenGLWidget* osgWidget;
    QString m_fileName;
};
#endif // WIDGET_H

 

 

• widget.cpp

#include "widget.h"
#include "ui_widget.h"
#include <osgViewer/Viewer>
#include <osg/Node>
#include <osgDB/ReadFile>
#include <osgGA/TrackballManipulator>
​
Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
​
    osgWidget = new osgQOpenGLWidget(ui->widget);          // 指定osg窗口顯示位置
    osgWidget->setGeometry(ui->widget->geometry());        // 指定osg窗口顯示大小
    m_fileName = "D:/OSG/OpenSceneGraph-Data/avatar.osg";  // 顯示模型路徑
​
    connect(osgWidget, SIGNAL(initialized()), this, SLOT(initOSG()));
}
​
Widget::~Widget()
{
    delete ui;
    if(osgWidget != NULL)
    {
        delete osgWidget;
    }
}
​
void Widget::initOSG()
{
    osgViewer::Viewer* pViewer = osgWidget->getOsgViewer();
    pViewer->setCameraManipulator(new osgGA::TrackballManipulator);
    osg::Node* node = osgDB::readNodeFile(m_fileName.toStdString());
    pViewer->setSceneData(node);
}
​
void Widget::on_pushButton_clicked()
{
    m_fileName = "D:/OSG/OpenSceneGraph-Data/bignathan.osg";
    initOSG();
}

 

7、編譯好的庫

鏈接：https://pan.baidu.com/s/1UfNbJ0fUAzKfe3XrWNVTDA
提取碼：66tf