Re: [osg-users] OSG + QT and QTabWidget: Disappearing scene graph
Hi, I try also follow advice to make model on first tab visible but on ubuntu
12.10 qt 4.8.3 and osg svn It doesn't work
I modify event method like this
Code:
virtual bool event( QEvent* event )
{
if (event-type() == QEvent::Timer)
{
if (static_castQTimerEvent*(event)-timerId() == _timerId)
{
frame();
return true;
}
}
if (event-type() == QEvent::Resize)
{
return false;
}
return QWidget::event(event);
}
Any hints?
...
Thank you!
Cheers,
Roman
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Re: [osg-users] OSG + QT and QTabWidget: Disappearing scene graph
Thanks a lot, with your tip it works ! Alistair Baxter wrote: -Original Message- From: [mailto:] On Behalf Of Lucas SART Sent: 07 September 2012 11:08 To: Subject: Re: OSG + QT and QTabWidget: Disappearing scene graph Hi, I had looking for why it doesn't work. It seems that the first tab camera projection matrix and view matrix are not valid (components = -1.#IND) and I don't know why. I tryed to look into OSG code but I don't found what is wrong... If someone have an idea it would be great ! Oddly, I think I just encountered this problem yesterday. If the QT widget ever gets resized to zero (as can happen sometimes during setup and intermediate layout stages), and osgQt::GLWidget::resizeEvent is called with width and height equal to zero, the camera projection matrix gets screwed up due to divide-by-zeroes, and never recovers because resizing always takes into account the existing camera matrix. I solved the problem by preventing osgQt::GLWidget::resizeEvent being called by my GLWidget subclass if either dimension was zero. But I suppose it would probably be better if a fix was made inside the osgQt library. ___ osg-users mailing list http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Post generated by Mail2Forum -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49923#49923 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG + QT and QTabWidget: Disappearing scene graph
Hi,
I had looking for why it doesn't work. It seems that the first tab camera
projection matrix and view matrix are not valid (components =
-1.#IND) and I don't know why. I tryed to look into OSG code but I
don't found what is wrong... If someone have an idea it would be great !
Here is the code I use (running on OSG 3.0.1 and qt 4.7.3) :
Code:
#include QtCore/QTimer
#include QtGui/QApplication
#include QtGui/QGridLayout
#include QTabWidget
#include osgViewer/CompositeViewer
#include osgViewer/ViewerEventHandlers
#include osgGA/TrackballManipulator
#include osgDB/ReadFile
#include osgQt/GraphicsWindowQt
#include iostream
class ViewerWidget : public QWidget, public osgViewer::CompositeViewer
{
public:
ViewerWidget(osgViewer::ViewerBase::ThreadingModel
threadingModel=osgViewer::CompositeViewer::SingleThreaded) : QWidget()
{
setThreadingModel(threadingModel);
// Create tab widget
QTabWidget* tab = new QTabWidget();
// Add tabs
tab-addTab(addViewWidget( createCamera(0,0,100,100),
osgDB::readNodeFile(cow.osg) ), tab 1) ;
tab-addTab(addViewWidget( createCamera(0,0,100,100),
osgDB::readNodeFile(cessna.osg) ), tab 2) ;
// Set layout
QGridLayout* grid = new QGridLayout;
grid-addWidget(tab, 0, 0) ;
setLayout( grid );
setRunFrameScheme(osgViewer::ViewerBase::ON_DEMAND);
_timerId = startTimer(0);
}
virtual ~ViewerWidget()
{
if (_timerId != 0)
killTimer(_timerId);
}
QWidget* addViewWidget( osg::Camera* camera, osg::Node* scene )
{
osgViewer::View* view = new osgViewer::View;
view-setCamera( camera );
addView( view );
view-setSceneData( scene );
view-addEventHandler( new osgViewer::StatsHandler );
view-setCameraManipulator( new osgGA::TrackballManipulator );
osgQt::GraphicsWindowQt* gw = dynamic_castosgQt::GraphicsWindowQt*(
camera-getGraphicsContext() );
return gw ? gw-getGLWidget() : NULL;
}
osg::Camera* createCamera( int x, int y, int w, int h, const std::string
name=, bool windowDecoration=false )
{
osg::DisplaySettings* ds = osg::DisplaySettings::instance().get();
osg::ref_ptrosg::GraphicsContext::Traits traits = new
osg::GraphicsContext::Traits;
traits-windowName = name;
traits-windowDecoration = windowDecoration;
traits-x = x;
traits-y = y;
traits-width = w;
traits-height = h;
traits-doubleBuffer = true;
traits-alpha = ds-getMinimumNumAlphaBits();
traits-stencil = ds-getMinimumNumStencilBits();
traits-sampleBuffers = ds-getMultiSamples();
traits-samples = ds-getNumMultiSamples();
osg::ref_ptrosg::Camera camera = new osg::Camera;
camera-setGraphicsContext( new osgQt::GraphicsWindowQt(traits.get()) );
camera-setClearColor( osg::Vec4(0.2, 0.2, 0.6, 1.0) );
camera-setViewport( new osg::Viewport(0, 0, traits-width, traits-height) );
camera-setProjectionMatrixAsPerspective(
30.0f, static_castdouble(traits-width)/static_castdouble(traits-height),
1.0f, 1.0f );
return camera.release();
}
virtual bool event( QEvent* event )
{
if (event-type() == QEvent::Timer)
{
if (static_castQTimerEvent*(event)-timerId() == _timerId)
{
frame();
return true;
}
}
return QWidget::event(event);
}
protected:
int _timerId;
};
int main( int argc, char** argv )
{
osg::ArgumentParser arguments(argc, argv);
osgViewer::ViewerBase::ThreadingModel threadingModel =
osgViewer::ViewerBase::CullThreadPerCameraDrawThreadPerContext;
while (arguments.read(--SingleThreaded)) threadingModel =
osgViewer::ViewerBase::SingleThreaded;
while (arguments.read(--CullDrawThreadPerContext)) threadingModel =
osgViewer::ViewerBase::CullDrawThreadPerContext;
while (arguments.read(--DrawThreadPerContext)) threadingModel =
osgViewer::ViewerBase::DrawThreadPerContext;
while (arguments.read(--CullThreadPerCameraDrawThreadPerContext))
threadingModel = osgViewer::ViewerBase::CullThreadPerCameraDrawThreadPerContext;
QApplication app(argc, argv);
ViewerWidget* viewWidget = new ViewerWidget(threadingModel);
viewWidget-setGeometry( 100, 100, 800, 600 );
viewWidget-show();
return app.exec();
}
Thanks,
Lucas
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Re: [osg-users] OSG + QT and QTabWidget: Disappearing scene graph
-Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Lucas SART Sent: 07 September 2012 11:08 To: osg-users@lists.openscenegraph.org Subject: Re: [osg-users] OSG + QT and QTabWidget: Disappearing scene graph Hi, I had looking for why it doesn't work. It seems that the first tab camera projection matrix and view matrix are not valid (components = -1.#IND) and I don't know why. I tryed to look into OSG code but I don't found what is wrong... If someone have an idea it would be great ! Oddly, I think I just encountered this problem yesterday. If the QT widget ever gets resized to zero (as can happen sometimes during setup and intermediate layout stages), and osgQt::GLWidget::resizeEvent is called with width and height equal to zero, the camera projection matrix gets screwed up due to divide-by-zeroes, and never recovers because resizing always takes into account the existing camera matrix. I solved the problem by preventing osgQt::GLWidget::resizeEvent being called by my GLWidget subclass if either dimension was zero. But I suppose it would probably be better if a fix was made inside the osgQt library. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG + QT and QTabWidget: Disappearing scene graph
under qt 5.0.0beta1 - it doesn't work I've got this error Qt at-spi: error getting the accessibility dbus address: The name org.a11y.Bus was not provided by any .service files Accessibility DBus not found. Falling back to session bus. Registered DEC: true Error in contacting registry org.freedesktop.DBus.Error.ServiceUnknown The name org.a11y.atspi.Registry was not provided by any .service files This plugin does not support setting window opacity QXcbConnection: XCB error: 3 (BadWindow), sequence: 576, resource id: 46137375, major code: 18 (ChangeProperty), minor code: 0 QXcbConnection: XCB error: 3 (BadWindow), sequence: 577, resource id: 46137375, major code: 12 (ConfigureWindow), minor code: 0 QXcbConnection: XCB error: 3 (BadWindow), sequence: 578, resource id: 46137375, major code: 8 (MapWindow), minor code: 0 QXcbConnection: XCB error: 3 (BadWindow), sequence: 596, resource id: 46137375, major code: 18 (ChangeProperty), minor code: 0 QXcbConnection: XCB error: 3 (BadWindow), sequence: 597, resource id: 46137375, major code: 12 (ConfigureWindow), minor code: 0 Cannot make QOpenGLContext current in a different thread -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49844#49844 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG + QT and QTabWidget: Disappearing scene graph
PS if I use singlethreaded I got errors QOpenGLContext::swapBuffers() called with non-exposed window, behavior is undefined QOpenGLContext::swapBuffers() called with non-exposed window, behavior is undefined -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49845#49845 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG + QT and QTabWidget: Disappearing scene graph
jlouis2k4 wrote: Hello Robert, Thank you for that example. It works great when I use the QTabWidget instead of the QGridLayout. However there is a problem that the first node (In the first tab) Does not show when the program is run. I can open the other tabs and see the nodes in all of them. Am I missing something here? Thank you! Cheers, Joseph I got the same problem (the first tab is empty), anyone knows how solve it ? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=49798#49798 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG + QT and QTabWidget: Disappearing scene graph
Hello Robert, Thank you for that example. It works great when I use the QTabWidget instead of the QGridLayout. However there is a problem that the first node (In the first tab) Does not show when the program is run. I can open the other tabs and see the nodes in all of them. Am I missing something here? Thank you! Cheers, Joseph -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=42636#42636 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG + QT and QTabWidget: Disappearing scene graph
(); return app.exec(); } Robert Milharcic -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Joseph Louis Sent: Tuesday, September 06, 2011 1:10 AM To: osg-users@lists.openscenegraph.org Subject: Re: [osg-users] OSG + QT and QTabWidget: Disappearing scene graph Hi Angus, I am trying to do the same with my program but the scene does not even appear in any of the tbs. I am also using the osgviewerQT example. Were you able to get your's to work? Thank you! Cheers, Joseph -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=42433#42433 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] OSG + QT and QTabWidget: Disappearing scene graph
Hi Angus, I am trying to do the same with my program but the scene does not even appear in any of the tbs. I am also using the osgviewerQT example. Were you able to get your's to work? Thank you! Cheers, Joseph -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=42433#42433 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
