qt结合osg viewer设置多线程问题！

xairwolfcn

adapterwidget.h

1. #ifndef ADAPTERWIDGET_H
   
2. #define ADAPTERWIDGET_H
   
3. 
   
4. #include <QGLWidget>
   
5. #include <osgViewer/GraphicsWindow>
   
6. #include <QKeyEvent>
   
7. 
   
8. class AdapterWidget : public QGLWidget
   
9. {
   
10.         Q_OBJECT
    
11. 
    
12. public:
    
13.         AdapterWidget(QWidget *parent = 0);
    
14.         ~AdapterWidget();
    
15.         QSize minimumSizeHint() const;
    
16.         QSize sizeHint() const;
    
17. 
    
18.         osgViewer::GraphicsWindow* getGraphicsWindow() { return _gw.get(); }
    
19.         const osgViewer::GraphicsWindow* getGraphicsWindow() const { return _gw.get(); }
    
20. 
    
21. protected:
    
22. //        virtual void initializeGL();
    
23. //        virtual void paintGL();
    
24.         virtual void resizeGL(int width, int height);
    
25. 
    
26.         virtual void keyPressEvent( QKeyEvent* event );
    
27.         virtual void keyReleaseEvent( QKeyEvent* event );
    
28.         virtual void mousePressEvent( QMouseEvent* event );
    
29.         virtual void mouseReleaseEvent( QMouseEvent* event );
    
30.         virtual void mouseMoveEvent( QMouseEvent* event );
    
31. 
    
32.         osg::ref_ptr<osgViewer::GraphicsWindowEmbedded> _gw;
    
33. };
    
34. 
    
35. #endif // ADAPTERWIDGET_H

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adapterwidget.cpp

1. #include "adapterwidget.h"
   
2. 
   
3. AdapterWidget::AdapterWidget(QWidget *parent)
   
4.         : QGLWidget(parent)
   
5. {
   
6.         _gw = new osgViewer::GraphicsWindowEmbedded(0,0,width(),height());
   
7.         setFocusPolicy(Qt::ClickFocus);
   
8. }
   
9. 
   
10. AdapterWidget::~AdapterWidget()
    
11. {
    
12. 
    
13. }
    
14. 
    
15. QSize AdapterWidget::minimumSizeHint() const
    
16. {
    
17.         return QSize(50, 50);
    
18. }
    
19. 
    
20. QSize AdapterWidget::sizeHint() const
    
21. {
    
22.         return QSize(400, 400);
    
23. }
    
24. 
    
25. void AdapterWidget::resizeGL(int width, int height)
    
26. {
    
27.         _gw->getEventQueue()->windowResize(0, 0, width, height );
    
28.         _gw->resized(0,0,width,height);
    
29. }
    
30. 
    
31. void AdapterWidget::keyPressEvent( QKeyEvent* event )
    
32. {
    
33.         _gw->getEventQueue()->keyPress( (osgGA::GUIEventAdapter::KeySymbol) *(event->text().toAscii().data() ) );
    
34. }
    
35. 
    
36. void AdapterWidget::keyReleaseEvent( QKeyEvent* event )
    
37. {
    
38.         _gw->getEventQueue()->keyRelease( (osgGA::GUIEventAdapter::KeySymbol) *(event->text().toAscii().data() ) );
    
39. }
    
40. 
    
41. void AdapterWidget::mouseMoveEvent( QMouseEvent* event )
    
42. {
    
43.         _gw->getEventQueue()->mouseMotion(event->x(), event->y());
    
44. }
    
45. 
    
46. void AdapterWidget::mousePressEvent( QMouseEvent* event )
    
47. {
    
48.          int button = 0;
    
49.     switch(event->button())
    
50.     {
    
51.         case(Qt::LeftButton): button = 1; break;
    
52.         case(Qt::MidButton): button = 2; break;
    
53.         case(Qt::RightButton): button = 3; break;
    
54.         case(Qt::NoButton): button = 0; break;
    
55.         default: button = 0; break;
    
56.     }
    
57.     _gw->getEventQueue()->mouseButtonPress(event->x(), event->y(), button);
    
58. }
    
59. 
    
60. void AdapterWidget::mouseReleaseEvent( QMouseEvent* event )
    
61. {
    
62.         int button = 0;
    
63.     switch(event->button())
    
64.     {
    
65.         case(Qt::LeftButton): button = 1; break;
    
66.         case(Qt::MidButton): button = 2; break;
    
67.         case(Qt::RightButton): button = 3; break;
    
68.         case(Qt::NoButton): button = 0; break;
    
69.         default: button = 0; break;
    
70.     }
    
71.     _gw->getEventQueue()->mouseButtonRelease(event->x(), event->y(), button);
    
72. }

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osgwidget.h

1. #ifndef OSGWIDGET_H
   
2. #define OSGWIDGET_H
   
3. 
   
4. #include <osgViewer/Viewer>
   
5. #include "adapterwidget.h"
   
6. 
   
7. class OSGWidget : public AdapterWidget, public osgViewer::Viewer
   
8. {
   
9.         Q_OBJECT
   
10. 
    
11. public:
    
12.         OSGWidget(QWidget *parent = 0);
    
13.         ~OSGWidget();
    
14. 
    
15. protected:
    
16.         void paintGL();
    
17. 
    
18. private:
    
19.        
    
20. };
    
21. 
    
22. #endif // OSGWIDGET_H

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osgwidget.cpp

1. #include "osgwidget.h"
   
2. 
   
3. OSGWidget::OSGWidget(QWidget *parent)
   
4.         : AdapterWidget(parent)
   
5. {
   
6.         getCamera()->setViewport(new osg::Viewport(0,0,width(),height()));
   
7.         getCamera()->setProjectionMatrixAsPerspective(30.0f, static_cast<double>(width())/static_cast<double>(height()), 1.0f, 10000.0f);
   
8.         getCamera()->setGraphicsContext(getGraphicsWindow());
   
9. 
   
10.         setThreadingModel(osgViewer::Viewer::SingleThreaded); // 这里有问题！！！！！
    
11.         setGeometry(0,0,600,600);
    
12. 
    
13. }
    
14. 
    
15. OSGWidget::~OSGWidget()
    
16. {
    
17. 
    
18. }
    
19. 
    
20. void OSGWidget::paintGL()
    
21. {
    
22.         frame();
    
23.         update();
    
24. }

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setThreadingModel(osgViewer::Viewer::SingleThreaded);  只有设置单线程没有问题，问题如下，osg不能显示，，是不是因为我只给这个场景添加了一个cow.osg 的问题啊！

array

我没什么时间把所有程序都读一遍，不过您的问题看起来像是没有正确设置opengl上下文就开始渲染了。您应该考虑osgQt中的方案

xairwolfcn

array 发表于 2012-3-29 17:58
我没什么时间把所有程序都读一遍，不过您的问题看起来像是没有正确设置opengl上下文就开始渲染了。您应该考 ...

谢谢！我再看看！