[osg-users] Osg With Qt

[Mohit Vijayvargiya]

Hi,

I am new in OSG and I want to create a grid using Osg with Qt, how can i able 
to achieve this.

If anyone know please help me on this i was stuck from a long time on this and 
any help on this will be appreciated 

Thank you!

Cheers,
Mohit :([/b]

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Re: [osg-users] OSG with Qt on Android fails to render anything

[Andrea Bracci]

Hi kornerr,

your reply seems to me quite an "off-topic"...anyway I'm writing my 
configuration below since it may be helpful to fully understand the problem.

Qt version: 5.7.0 (OpenSource) for Android armeabi-v7a
OSG version: 3.4.0, static build (as default for Android)
ABI version: armeabi-v7a
3rd party: for several reasons I have used the statically built 3rdparty 
libraries of OpenCV (e. g. libjpeg, libtiff...etc...). For the other libraries 
(like freetype, curl...etc...) I have used the ones found here: 
http://www2.ai2.upv.es/difusion/osgAndroid/3rdpartyAndroid.zip

With the exception of the 3rdparty libraries at the previous link I have built 
all by myself from scratch using cmake, without Android Studio. Clearly I have 
previously installed the Android SDK and NDK.



Cheers,
Andrea

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Re: [osg-users] OSG with Qt on Android fails to render anything

[michael kapelko]

Hi. I'm actually here to ask for Android assistance.
Can you please describe your build environment?
1. Did you build with Android Studio?
2. Did you build static or shared OSG libs?
3. Did you build dependencies (libpng and others) yourself?

Thanks.

2016-10-24 16:32 GMT+07:00 Andrea Bracci :

> Hi reedev,
>
> many thanks for your sudden reply.
>
> I am able to run osgviewerQt on Windows without problems and without any
> patches to the GraphicsWindowQt.cpp code.
>
> However I have tried your solution on Android but it didn't solve the
> problem: I still see the blue screen inside a Qt window, without any object
> rendered on it.
>
> Thank you anyway!
>
> Andrea
>
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>
>
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Re: [osg-users] OSG with Qt on Android fails to render anything

[Andrea Bracci]

Hi reedev,

many thanks for your sudden reply.

I am able to run osgviewerQt on Windows without problems and without any 
patches to the GraphicsWindowQt.cpp code.

However I have tried your solution on Android but it didn't solve the problem: 
I still see the blue screen inside a Qt window, without any object rendered on 
it.

Thank you anyway!

Andrea

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Re: [osg-users] OSG with Qt on Android fails to render anything

[Raymond de Vries]

Hi Andrea,

One question/test: have you been able to run osgviewerQt on Windows for 
instance? Usually, I need to patch src/osgQt/GraphicsWindowQt.cpp in 2 
locations in order to prevent illegal values for scaled_width and/or 
scaled_height:


void GLWidget::resizeEvent( QResizeEvent* event )
{
const QSize& size = event->size();

int scaled_width = static_cast(size.width()*_devicePixelRatio);
int scaled_height = static_cast(size.height()*_devicePixelRatio);

if (scaled_width <= 0 || scaled_height <= 0)
return;

_gw->resized( x(), y(), scaled_width,  scaled_height);
_gw->getEventQueue()->windowResize( x(), y(), scaled_width, 
scaled_height );

_gw->requestRedraw();
}

void GLWidget::moveEvent( QMoveEvent* event )
{
const QPoint& pos = event->pos();
int scaled_width = static_cast(width()*_devicePixelRatio);
int scaled_height = static_cast(height()*_devicePixelRatio);

if (scaled_width <= 0 || scaled_height <= 0)
return;

_gw->resized( pos.x(), pos.y(), scaled_width,  scaled_height );
_gw->getEventQueue()->windowResize( pos.x(), pos.y(), 
scaled_width,  scaled_height );

}

Without these checks nothing is rendered. Maybe this is the case for 
Android too?


hth,
Raymond



On 10/24/2016 11:11 AM, Andrea Bracci wrote:

Hi,

I'm trying to run a simple application using OSG + Qt on Android.

I have successfully built OSG Release 3.4.0 for Android (armeabi-v7a) and it 
successfully runs on Android as expected (I have run the example 
osgAndroidExampleGLES2 and it runs flawlessly). I have also successfully built 
osgQt for my Qt version 5.7.0, as well as the osgViewerQt example for Android 
armeabi-v7a.

However if I run osgviewerQt on my Android device (version 5.0.2, API 21) it 
fails to render anything, in a way similar to what I found at the following 
link:

http://lists.qt-project.org/pipermail/interest/2015-July/017869.html

In order to simplify the application I allocate a single QWidget (instead of 
the four ones contained in the original osgviewerQt example) loading a single 
osg::Node* from a file cessna.osg. I have verified that the cessna.osg file is 
successfully loaded through a qDebug() logging message on the value of the 
loaded pointer. On my Android device I see the OSG-default blue screen without 
any object.

As an additional information: I have successfully built and executed the Qt 
examples with OpenGLES on my Android device.

I have done an extensive web search but I didn't find the solution to my 
problem, nor anyone that successfully ran OSG + Qt on Android.

Can anyone tell me where am I wrong, or what steps shall I follow to make my 
OSG+Qt application to work on Android?

Thank you in advance for your kind replies!

Cheers,
Andrea

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[osg-users] OSG with Qt on Android fails to render anything

[Andrea Bracci]

Hi,

I'm trying to run a simple application using OSG + Qt on Android.

I have successfully built OSG Release 3.4.0 for Android (armeabi-v7a) and it 
successfully runs on Android as expected (I have run the example 
osgAndroidExampleGLES2 and it runs flawlessly). I have also successfully built 
osgQt for my Qt version 5.7.0, as well as the osgViewerQt example for Android 
armeabi-v7a.

However if I run osgviewerQt on my Android device (version 5.0.2, API 21) it 
fails to render anything, in a way similar to what I found at the following 
link:

http://lists.qt-project.org/pipermail/interest/2015-July/017869.html

In order to simplify the application I allocate a single QWidget (instead of 
the four ones contained in the original osgviewerQt example) loading a single 
osg::Node* from a file cessna.osg. I have verified that the cessna.osg file is 
successfully loaded through a qDebug() logging message on the value of the 
loaded pointer. On my Android device I see the OSG-default blue screen without 
any object.

As an additional information: I have successfully built and executed the Qt 
examples with OpenGLES on my Android device.

I have done an extensive web search but I didn't find the solution to my 
problem, nor anyone that successfully ran OSG + Qt on Android.

Can anyone tell me where am I wrong, or what steps shall I follow to make my 
OSG+Qt application to work on Android?

Thank you in advance for your kind replies!

Cheers,
Andrea

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Re: [osg-users] OSG and Qt

[Gianni Ambrosio]

Hi Inna,
in osgGA library you can find several classes that derive from EventHandler. If 
you use Qt and osgQt library you can choose to handle events with osg or Qt. If 
you have something particular you are looking for please ask.

Regards,
Gianni

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Re: [osg-users] OSG and Qt

[Inna Reddy]

Hi,

Thanks for your reply and that'S super. Hopefully, It will be good start for 
me. 
... 

Thank you!

Cheers,
Inna

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Re: [osg-users] OSG and Qt

[Gianni Ambrosio]

Hi Inna,
I use OSG in Qt applications for years and I've never had specific problems 
with event handling.
Currently I'm on Qt 5.6 and OSG 3.4.0.

Gianni

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[osg-users] OSG and Qt

[Inna Reddy]

Hi,

I have started working on Qt5.7 and OSG 3.4. Is it safe to use  osg with Qt 
without any issue like specially Event handling . 

... 

Thank you!

Cheers,
InnaReddy

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Re: [osg-users] OSG 3.4.0/QT 5.5 Warning "QOpenGLContext::swapBuffers() called with non-exposed window, behavior is undefined"

[Andrew Cunningham]

It quite possibly could be specific to my implementation. I took the code from 
the osg example , but had to massage it a bit. I might try QT 5.6 to see if it 
goes away as well.

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Re: [osg-users] OSG 3.4.0/QT 5.5 Warning "QOpenGLContext::swapBuffers() called with non-exposed window, behavior is undefined"

[Gianni Ambrosio]

Hi Loopy,
I moved to OSG 3.4.0 and Qt5.6.0 recently but I didn't get such a warning. It 
seems a particular case of your implementation. Did you try the osgviewerQt 
example?

Regards,
Gianni

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[osg-users] OSG 3.4.0/QT 5.5 Warning "QOpenGLContext::swapBuffers() called with non-exposed window, behavior is undefined"

[Andrew Cunningham]

Hi,
When using OSG 3.4.0 and QT 5.5 and on the firstviewer->frame() of an OSGWidget 
I am getting this warning from QOpenGLContext. Subsequent calls to frame() do 
not show this warning.

Mr. Google suggests that a fix is to check the isExposed() flag on the 
underlying QWindow -  if it were possible to get to the QWindow via a public 
API.

Any suggestions?

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[osg-users] OSG and QT under Android

[Edoardo Tagome]

Hi,
	I'd like to build osgQT (3.2.1-rc2) for Android but it seems that this 
is not supported really: or at least so it seems to me from line 556 in 
CMakeLists.txt:


IF(OSG_USE_QT AND NOT ANDROID)

Has anyone been able to build for Android and knows a solution? Or at 
least the real reason this is disabled :-)


Thanks


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Re: [osg-users] OSG and QT under Android

[Jordi Torres]

Hi Edoardo,

When the Android-OSG code was submited, Qt was not able yet to run on
Android. I suppose that was the main reason, do not compile the osgQt
libraries when compiling in android.

If you try tell us what you get at the end.

Cheers.


2014-03-10 18:45 GMT+01:00 Edoardo Tagome edo...@gmail.com:

 Hi,
 I'd like to build osgQT (3.2.1-rc2) for Android but it seems that
 this is not supported really: or at least so it seems to me from line 556
 in CMakeLists.txt:

 IF(OSG_USE_QT AND NOT ANDROID)

 Has anyone been able to build for Android and knows a solution? Or at
 least the real reason this is disabled :-)

 Thanks


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Re: [osg-users] OSG and QT under Android

[Edoardo Tagome]

On 10/03/2014 19:41, Jordi Torres wrote:

Hi Edoardo,

When the Android-OSG code was submited, Qt was not able yet to run on
Android. I suppose that was the main reason, do not compile the osgQt
libraries when compiling in android.
With do not compile you mean don't try to compile! or at that time 
it was not able to compile?




If you try tell us what you get at the end.

At the moment I'm getting errors in CMake:

CMake Error at 
C:/Qt/Qt5.2.1_DROID/5.2.1/android_armv7/lib/cmake/Qt5Gui/Qt5GuiConfigExtras.cmake:16 
(message):

  Failed to find GLESv2 in  with CMAKE_CXX_LIBRARY_ARCHITECTURE .

But I'm not an expert... and I may be doing wrong :-)
Any hint?

Bye

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Re: [osg-users] OSG and QT under Android

[Jordi Torres]

2014-03-10 20:03 GMT+01:00 Edoardo Tagome edo...@gmail.com:

 On 10/03/2014 19:41, Jordi Torres wrote:

 Hi Edoardo,

 When the Android-OSG code was submited, Qt was not able yet to run on
 Android. I suppose that was the main reason, do not compile the osgQt
 libraries when compiling in android.

 With do not compile you mean don't try to compile! or at that time it
 was not able to compile?


Any of the two answers is valid :)




 If you try tell us what you get at the end.

 At the moment I'm getting errors in CMake:

 CMake Error at C:/Qt/Qt5.2.1_DROID/5.2.1/android_armv7/lib/cmake/
 Qt5Gui/Qt5GuiConfigExtras.cmake:16 (message):
   Failed to find GLESv2 in  with CMAKE_CXX_LIBRARY_ARCHITECTURE .

 But I'm not an expert... and I may be doing wrong :-)
 Any hint?


Sorry, right now I don't have the time to test. You are on your own. Maybe
others can help.



 Bye


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Re: [osg-users] OSG with Qt

[Robert Osfield]

Have a look at the osgviewerQt example.
On 6 May 2013 02:51, Sujan Dasmahapatra sujan.dasmahapa...@gmail.com
wrote:

 Can I control OSG viewer by Qt events. Like mouse press, mouse move etc
 can be used with OSG viewer??..Any suggestions highly appreciated.

 --
 Regards
 Sujan

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Re: [osg-users] OSG with Qt

[Sujan Dasmahapatra]

I am trying to build osgViewerQt example. Error is coming as osgQt run-time
error. I am building it is debug mode. But I dont find any osgQtd.lib, but
it is osgQt.lib Is it for release build??..I am using Visual studio 2010
and corresponding Qt version I have installed. Please suggest. Thank  Sujan


On Mon, May 6, 2013 at 4:51 PM, Robert Osfield robert.osfi...@gmail.comwrote:

 Have a look at the osgviewerQt example.
 On 6 May 2013 02:51, Sujan Dasmahapatra sujan.dasmahapa...@gmail.com
 wrote:

 Can I control OSG viewer by Qt events. Like mouse press, mouse move etc
 can be used with OSG viewer??..Any suggestions highly appreciated.

 --
 Regards
 Sujan

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Thanks  Regards
Sujan
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Re: [osg-users] OSG with Qt

[Robert Osfield]

Hi Sujan,

I haven't touched Windows for development for well over a decade so can't
help with detailed Windows specifics.  In general if you add new
dependencies then you'll need to go back to Cmake to regenerate the project
files to reflect the new dependencies.  VisualStudio also has this dumb
feature/fail that you can't safely mix debug and optimized builds so if you
build the OSG with debug the dependencies will need to be debug as well.

Robert.


On 6 May 2013 10:16, Sujan Dasmahapatra sujan.dasmahapa...@gmail.comwrote:

 I am trying to build osgViewerQt example. Error is coming as osgQt
 run-time error. I am building it is debug mode. But I dont find any
 osgQtd.lib, but it is osgQt.lib Is it for release build??..I am using
 Visual studio 2010 and corresponding Qt version I have installed. Please
 suggest. Thank  Sujan


 On Mon, May 6, 2013 at 4:51 PM, Robert Osfield 
 robert.osfi...@gmail.comwrote:

 Have a look at the osgviewerQt example.
 On 6 May 2013 02:51, Sujan Dasmahapatra sujan.dasmahapa...@gmail.com
 wrote:

 Can I control OSG viewer by Qt events. Like mouse press, mouse move etc
 can be used with OSG viewer??..Any suggestions highly appreciated.

 --
 Regards
 Sujan

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 Thanks  Regards
 Sujan

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Re: [osg-users] OSG with Qt

[Jan Ciger]

On Mon, May 6, 2013 at 3:51 AM, Sujan Dasmahapatra
sujan.dasmahapa...@gmail.com wrote:
 Can I control OSG viewer by Qt events. Like mouse press, mouse move etc can
 be used with OSG viewer??..Any suggestions highly appreciated.


You can do that, but basically you need to embed the OSG inside of a
Qt windows (see the osgQt examples) and then forward the Qt events to
the OSG event handling code. I think most are handled in the examples,
so you should not have too many issues with that.

Jan
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Re: [osg-users] OSG with Qt

[Jan Ciger]

On Mon, May 6, 2013 at 11:16 AM, Sujan Dasmahapatra
sujan.dasmahapa...@gmail.com wrote:
 I am trying to build osgViewerQt example. Error is coming as osgQt run-time
 error. I am building it is debug mode. But I dont find any osgQtd.lib, but
 it is osgQt.lib Is it for release build??..I am using Visual studio 2010 and
 corresponding Qt version I have installed. Please suggest. Thank  Sujan

That means that you have built OSG in release mode only. You must
build both release  debug version of OSG if you want to build the
examples (or your project) in Debug mode.

Regards,

J.
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[osg-users] OSG with Qt

[Sujan Dasmahapatra]

Can I control OSG viewer by Qt events. Like mouse press, mouse move etc can
be used with OSG viewer??..Any suggestions highly appreciated.

-- 
Regards
Sujan
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Re: [osg-users] OSG and Qt GLdouble typedef conflicts with OpenGL ES2

[Preet]

Hi Robert,

Thanks for the quick reply. Just for anyone else who runs into this,
another way to get aorund this without changing order of includes is just
to add the osg defines before Qt is included in the application:

#define GL_DOUBLE 0x140A
#define GLdouble double

It was a bit of a pain to change up order of includes everywhere in my
application. Since both OSG and Qt have to check whether or not GLdouble is
defined by the GL implementation, I think its safe to do this [and it seems
to be working fine].


Regards,

Preet


On Wed, Dec 12, 2012 at 3:51 AM, Robert Osfield robert.osfi...@gmail.comwrote:

 Hi Preet,

 On 12 December 2012 05:59, Preet prismatic.proj...@gmail.com wrote:

 Hiya

 I'm using OSG with Qt to create an OpenGL ES 2 application. GL ES2 does
 not have GLdoubles.

 When building witHh against ES2, Qt typedefs GLdouble to GLfloat. OSG
 typedefs GLdouble to just 'double'. As a result I get an error when trying
 to compile my application.

 How do I get around this?


 It will be an order of include issue, so just be careful which order you
 include files, or keep the Qt GL code seperate from the OSG Qt code.
 Personally I'm surprised by the Qt downcasting GLdoube to GLfloat, this
 could break codes that rely on doubles.  On the OSG side we generally use
 floats for all key data that gets passed to OpenGL, it tends to be just
 things like glu (which is now part of the OSG) that uses doubles.

 Robert.

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Re: [osg-users] OSG and Qt GLdouble typedef conflicts with OpenGL ES2

[Robert Osfield]

Hi Preet,

On 12 December 2012 05:59, Preet prismatic.proj...@gmail.com wrote:

 Hiya

 I'm using OSG with Qt to create an OpenGL ES 2 application. GL ES2 does
 not have GLdoubles.

 When building witHh against ES2, Qt typedefs GLdouble to GLfloat. OSG
 typedefs GLdouble to just 'double'. As a result I get an error when trying
 to compile my application.

 How do I get around this?


It will be an order of include issue, so just be careful which order you
include files, or keep the Qt GL code seperate from the OSG Qt code.
Personally I'm surprised by the Qt downcasting GLdoube to GLfloat, this
could break codes that rely on doubles.  On the OSG side we generally use
floats for all key data that gets passed to OpenGL, it tends to be just
things like glu (which is now part of the OSG) that uses doubles.

Robert.
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[osg-users] OSG and Qt GLdouble typedef conflicts with OpenGL ES2

[Preet]

Hiya

I'm using OSG with Qt to create an OpenGL ES 2 application. GL ES2 does not
have GLdoubles.

When building with against ES2, Qt typedefs GLdouble to GLfloat. OSG
typedefs GLdouble to just 'double'. As a result I get an error when trying
to compile my application.

How do I get around this?


Preet
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[osg-users] OSG and Qt fullscreen problem

[Markus Husseini]

Hi,

I am trying to integrate an osg viewer into a Qt user interface. To do this I 
am using the osg viewer widget from the OpenSceneGraph 3.0 Cookbook. If I set 
the widget to fullscreen with the Qt method showFullScreen(). If I do this I 
have a gray border around my viewport. To eliminate the border I try to set the 
margin of the layout which includes the osgviewer to 0. But if I do this the Qt 
widget with viewer is not shown anymore. If I set the margin value to 1 then it 
works but I have again a small gray border. 

I know that this is working with OpenSG. Is there maybe a problem with osg?? 
Does someone has a solution for this problem??

Here is my code (Sorry I don'T know why the tabs are shown like this):

viewerwidget.h

Code:

#ifndef VIEWERWIDGET_H
#define VIEWERWIDGET_H

// C++ includes
#include iostream

// Qt includes
#include QtCore/QtCore
#include QtGui/QtGui

// OSG includes
#include osgDB/ReadFile
#include osgGA/TrackballManipulator
#include osgViewer/ViewerEventHandlers
#include osgViewer/Viewer
#include osgQt/GraphicsWindowQt

class ViewerWidget : public QWidget
{
public:
ViewerWidget( QWidget *parent = 0, Qt::WFlags flags = 0 ) 
  : QWidget(parent, flags)
{
osg::Camera* camera = createCamera( 0, 0, 640, 480 );
osg::Node* scene = osgDB::readNodeFile(cow.osg);
m_viewer.setCamera( camera );
m_viewer.setSceneData( scene );
m_viewer.addEventHandler( new osgViewer::StatsHandler );
m_viewer.setCameraManipulator( new osgGA::TrackballManipulator 
);

// Use single thread here to avoid known issues under Linux
m_viewer.setThreadingModel( osgViewer::Viewer::SingleThreaded );

osgQt::GraphicsWindowQt* gw = 
dynamic_castosgQt::GraphicsWindowQt*( camera-getGraphicsContext() );
if ( gw )
{
QVBoxLayout* layout = new QVBoxLayout;

///
layout-setMargin(0);
///

layout-addWidget( gw-getGLWidget() );
setLayout( layout );
}

connect( m_timer, SIGNAL(timeout()), this, SLOT(update()) );
m_timer.start( 40 );
}

~ViewerWidget() {}

osg::Camera* createCamera( int x, int y, int w, int h )
{
osg::DisplaySettings* ds = 
osg::DisplaySettings::instance().get();

osg::ref_ptrosg::GraphicsContext::Traits traits = new 
osg::GraphicsContext::Traits;
traits-windowDecoration = false;
traits-x = x;
traits-y = y;
traits-width = w;
traits-height = h;
traits-doubleBuffer = true;

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();
}

protected:
virtual void paintEvent( QPaintEvent* event )   { m_viewer.frame(); }
osgViewer::Viewer   m_viewer;
QTimer  m_timer;
};

#endif  // VIEWERWIDGET_H




main.cpp

Code:

#include QtGui/QApplication

#include viewerwidget.h

int main(int argc, char *argv[])
{
   QApplication app( argc, argv );

   ViewerWidget* widget = new ViewerWidget(0,Qt::WindowStaysOnTopHint | 
Qt::SplashScreen);
   widget-setGeometry( 0, 0, 800, 600 );
   widget-showFullScreen();
   widget-show();

return app.exec();
}





Thank you!

Cheers,
Markus

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[osg-users] OSG with Qt fullscreen problem

[Markus Husseini]

Hi,

I am using the code example from the book OpenSceneGraph 3 Cookbook to 
implement an OSG application with a Qt gui.

If I set the widget which contains the viewerwideget to showFullscreen() I get 
a gray border around my osg scene widget. I found a solution to set the margin 
of the layout to 0 to eliminate the border. I tried to set it to 0 but the 
windows is not shown anymore. Otherwise if I set the margin to 1 then is the 
window shown, but I have again a small border.

Does someone has a solution for this problem??

Thank you!

Cheers,
Markus

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Re: [osg-users] OSG and Qt fullscreen problem

[jamie robertson]

Hi,

The paint event is never called if you have zero size margin in a layout.

If you only have a single view then there's no point in having a layout anyway 
instead you can use a GLWidget widget directly 
Code:
GraphicsWindowQt::getGLWidget()



Cheers,

jamie

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[osg-users] osg and Qt

[Martin Haffner]

Hello,

I want to use openscenegraph to render into a Qt QWidget. Has anyone of you 
ever successfully tried this or know a ressource/tutorial how this can be done?

Thanks!

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Re: [osg-users] osg and Qt

[Mr Alji]

Hi Martin,

In OpenSceneGraph sources, there is an *Example osgQtWidgets*. give it a
try

Cheers
*--*
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Re: [osg-users] OSG and QT example

[Robert Osfield]

Hi Benjamin,

We have improved Qt integration checked into svn/trunk as part of the
new osgQt library.  Submissions would be best built upon this new work
rather than introducing yet another variation of Qt integration.

Cheers,
Robert.

On Thu, Jan 20, 2011 at 9:42 PM, Benjamin Wasty bennywa...@gmx.de wrote:
 Hi,

 I worked on a Qt-widget integration for my university based on the Delta3D 
 files posted earlier by David Guthrie. I made a few changes - mainly to make 
 multi-threaded rendering really work.
 We'd be willing to make a submission if there's interest. My current version 
 is attached - feedback would be welcome as this is the first time I worked 
 with OSG.

 Below are some details and open issues:
         The class QtViewer inherits from osgViewer::Viewer and 
 OSGAdapterWidget. It does some setup and calls frame() in its updateGL() 
 method.

         Context sharing between Qt and OSG didn't work when OSG was running 
 multi-threaded - in the end (after quite a few hours of debugging) I just 
 'switched' the two contexts in OSGAdapterWidget - the QGLWidget keeps its 
 original one and the additional one created in threadedInitializeGL() is used 
 by the OSG draw thread (OSGGraphicsWindowQt directs the 
 makeCurrent/doneCurrent()-calls to that context).

         Improved mapping from Traits/osg::DisplaySettings to QGLFormat

         Removed QtGuiWindowSystemWrapper and GLWidgetFactory because we don't 
 need them (but only commented out)

         No rendering when Widget is hidden (otherwise some access violation 
 occurs)


 One remaining problem is that there is quite a lag when the main window is 
 moved or resized, because Qt apparently doesn't have enough time to render 
 fluently due to the blocking caused by vsync. Increasing the interval for the 
 update timer helps, but reduces the framerate and in my opinion the now used 
 10ms are already too much.
 Should the frame()-call maybe moved to a separate thread like there:
 forum . openscenegraph . org / viewtopic.php?p=17387#17387  ? (2 posts before 
 I can post URLs? I don't have time for that...)

 A quick test with that code didn't work, but I didn't pursue it further so 
 far.

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Re: [osg-users] OSG and QT example

[Sumit Pandey]

Sounds quite interesting. 

-Original Message-
From: osg-users-boun...@lists.openscenegraph.org 
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Benjamin Wasty
Sent: Friday, January 21, 2011 3:13 AM
To: osg-users@lists.openscenegraph.org
Subject: Re: [osg-users] OSG and QT example

Hi,

I worked on a Qt-widget integration for my university based on the Delta3D 
files posted earlier by David Guthrie. I made a few changes - mainly to make 
multi-threaded rendering really work.
We'd be willing to make a submission if there's interest. My current version is 
attached - feedback would be welcome as this is the first time I worked with 
OSG.

Below are some details and open issues: 
 The class QtViewer inherits from osgViewer::Viewer and 
OSGAdapterWidget. It does some setup and calls frame() in its updateGL() method.

 Context sharing between Qt and OSG didn't work when OSG was running 
multi-threaded - in the end (after quite a few hours of debugging) I just 
'switched' the two contexts in OSGAdapterWidget - the QGLWidget keeps its 
original one and the additional one created in threadedInitializeGL() is used 
by the OSG draw thread (OSGGraphicsWindowQt directs the 
makeCurrent/doneCurrent()-calls to that context).

 Improved mapping from Traits/osg::DisplaySettings to QGLFormat

 Removed QtGuiWindowSystemWrapper and GLWidgetFactory because we don't 
need them (but only commented out)

 No rendering when Widget is hidden (otherwise some access violation 
occurs)


One remaining problem is that there is quite a lag when the main window is 
moved or resized, because Qt apparently doesn't have enough time to render 
fluently due to the blocking caused by vsync. Increasing the interval for the 
update timer helps, but reduces the framerate and in my opinion the now used 
10ms are already too much.
Should the frame()-call maybe moved to a separate thread like there:
forum . openscenegraph . org / viewtopic.php?p=17387#17387  ? (2 posts before I 
can post URLs? I don't have time for that...)

A quick test with that code didn't work, but I didn't pursue it further so far.

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Re: [osg-users] OSG and QT

[Cracj Kurt]

http://www.easy-share.com/1913167873/qtgui_170.zip

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[osg-users] OSG and QT

[Cracj Kurt]

Hi,

how i can render scene in my QT dialog form?
Can you help me. I read common manual ,there use console applications and 
viewer class. But i want render my scene  in GUI.

For example there is cow.osg. How it open in QT GUI application?

Thank you!

Cheers,
kurt

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Re: [osg-users] OSG and QT

[Robert Osfield]

Hi Kurt,

Have you looked at any of the osgviewerQt* examples If no try there.

Robert.

On Wed, Dec 1, 2010 at 3:39 PM, Cracj Kurt couple...@mail.ru wrote:
 Hi,

 how i can render scene in my QT dialog form?
 Can you help me. I read common manual ,there use console applications and 
 viewer class. But i want render my scene  in GUI.

 For example there is cow.osg. How it open in QT GUI application?

 Thank you!

 Cheers,
 kurt

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Re: [osg-users] OSG and QT

[Cracj Kurt]

it example have 3 files.
i`m not understand how  open it  in QT.
I try create empty project and include it *.cpp there.

 INCLUDEPATH += D:/openscenegraph/OpenSceneGraph/include
 INCLUDEPATH += C:/Qt/2010.05/qt/src/opengl
 LIBS += D:/openscenegraph/OpenSceneGraph/lib

INCLUDEPATH += C:/Qt/2010.05/qt/src/opengl  for qgl.h

but get list of errors


 
 mingw32-make: Entering directory `D:/OpenSceneGraph-2.8.3 
 (1)/OpenSceneGraph-2.8.3/examples/osgviewerQT/untitled1-build-desktop'
 
 C:/Qt/2010.05/mingw/bin/mingw32-make -f Makefile.Debug
 
 mingw32-make[1]: Entering directory `D:/OpenSceneGraph-2.8.3 
 (1)/OpenSceneGraph-2.8.3/examples/osgviewerQT/untitled1-build-desktop'
 
 g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE 
 -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_GUI_LIB -DQT_CORE_LIB 
 -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN -Ic:\Qt\2010.05\qt\include\QtCore 
 -Ic:\Qt\2010.05\qt\include\QtGui -Ic:\Qt\2010.05\qt\include 
 -Id:\openscenegraph\OpenSceneGraph\include -Ic:\Qt\2010.05\qt\src\opengl 
 -Ic:\Qt\2010.05\qt\include\ActiveQt -Idebug -I..\untitled1 -I. 
 -Ic:\Qt\2010.05\qt\mkspecs\win32-g++ -o debug\AdapterWidget.o 
 ..\AdapterWidget.cpp
 
 ..\AdapterWidget.cpp:55: error: 'WFlags' has not been declared
 
 ..\AdapterWidget.cpp:76: error: 'WFlags' has not been declared
 
 ..\AdapterWidget.cpp: In constructor 'AdapterWidget::AdapterWidget(QWidget*, 
 const char*, const QGLWidget*, int)':
 
 ..\AdapterWidget.cpp:80: error: no matching function for call to 
 'QGLWidget::QGLWidget(QWidget*, const char*, const QGLWidget*, int)'
 
 c:\Qt\2010.05\qt\src\opengl/qgl.h:570: note: candidates are: 
 QGLWidget::QGLWidget(const QGLWidget)
 
 c:\Qt\2010.05\qt\src\opengl/qgl.h:461: note: 
 QGLWidget::QGLWidget(const QGLFormat, QWidget*, const QGLWidget*, 
 Qt::WindowFlags)
 
 c:\Qt\2010.05\qt\src\opengl/qgl.h:459: note: 
 QGLWidget::QGLWidget(QGLContext*, QWidget*, const QGLWidget*, Qt::WindowFlags)
 
 c:\Qt\2010.05\qt\src\opengl/qgl.h:457: note: 
 QGLWidget::QGLWidget(QWidget*, const QGLWidget*, Qt::WindowFlags)
 
 ..\AdapterWidget.cpp:87: error: 'ClickFocus' is not a member of 'QWidget'
 
 ..\AdapterWidget.cpp: In member function 'virtual void 
 AdapterWidget::keyPressEvent(QKeyEvent*)':
 
 ..\AdapterWidget.cpp:102: error: invalid use of incomplete type 'struct 
 QKeyEvent'
 
 c:\Qt\2010.05\qt\include/QtGui/../../src/gui/kernel/qwidget.h:79: error: 
 forward declaration of 'struct QKeyEvent'
 
 ..\AdapterWidget.cpp: In member function 'virtual void 
 AdapterWidget::keyReleaseEvent(QKeyEvent*)':
 
 ..\AdapterWidget.cpp:111: error: invalid use of incomplete type 'struct 
 QKeyEvent'
 
 c:\Qt\2010.05\qt\include/QtGui/../../src/gui/kernel/qwidget.h:79: error: 
 forward declaration of 'struct QKeyEvent'
 
 ..\AdapterWidget.cpp: In member function 'virtual void 
 AdapterWidget::mousePressEvent(QMouseEvent*)':
 
 ..\AdapterWidget.cpp:118: error: invalid use of incomplete type 'struct 
 QMouseEvent'
 
 c:\Qt\2010.05\qt\include/QtGui/../../src/gui/kernel/qwidget.h:76: error: 
 forward declaration of 'struct QMouseEvent'
 
 ..\AdapterWidget.cpp:126: error: invalid use of incomplete type 'struct 
 QMouseEvent'
 
 c:\Qt\2010.05\qt\include/QtGui/../../src/gui/kernel/qwidget.h:76: error: 
 forward declaration of 'struct QMouseEvent'
 
 ..\AdapterWidget.cpp:126: error: invalid use of incomplete type 'struct 
 QMouseEvent'
 
 c:\Qt\2010.05\qt\include/QtGui/../../src/gui/kernel/qwidget.h:76: error: 
 forward declaration of 'struct QMouseEvent'
 
 ..\AdapterWidget.cpp: In member function 'virtual void 
 AdapterWidget::mouseReleaseEvent(QMouseEvent*)':
 
 ..\AdapterWidget.cpp:132: error: invalid use of incomplete type 'struct 
 QMouseEvent'
 
 c:\Qt\2010.05\qt\include/QtGui/../../src/gui/kernel/qwidget.h:76: error: 
 forward declaration of 'struct QMouseEvent'
 
 ..\AdapterWidget.cpp:140: error: invalid use of incomplete type 'struct 
 QMouseEvent'
 
 c:\Qt\2010.05\qt\include/QtGui/../../src/gui/kernel/qwidget.h:76: error: 
 forward declaration of 'struct QMouseEvent'
 
 ..\AdapterWidget.cpp:140: error: invalid use of incomplete type 'struct 
 QMouseEvent'
 
 c:\Qt\2010.05\qt\include/QtGui/../../src/gui/kernel/qwidget.h:76: error: 
 forward declaration of 'struct QMouseEvent'
 
 ..\AdapterWidget.cpp: In member function 'virtual void 
 AdapterWidget::mouseMoveEvent(QMouseEvent*)':
 
 ..\AdapterWidget.cpp:145: error: invalid use of incomplete type 'struct 
 QMouseEvent'
 
 c:\Qt\2010.05\qt\include/QtGui/../../src/gui/kernel/qwidget.h:76: error: 
 forward declaration of 'struct QMouseEvent'
 
 ..\AdapterWidget.cpp:145: error: invalid use of incomplete type 'struct 
 QMouseEvent'
 
 c:\Qt\2010.05\qt\include/QtGui/../../src/gui/kernel/qwidget.h:76: error: 
 forward declaration of 'struct QMouseEvent'
 
 ..\AdapterWidget.cpp: At global scope:
 
 ..\AdapterWidget.cpp:153: error: 'WFlags' has not been declared
 
 ..\AdapterWidget.cpp:180: error: 'WFlags' has not been declared
 
 mingw32-make[1]: 

Re: [osg-users] OSG and QT

[Sajjadul Islam]

Hi,

That is how a typical .pro file should look like if you want to compile osg 
with qt.


/7
TEMPLATE = app
QT += opengl

INCLUDEPATH += .
INCLUDEPATH += /usr/include/osg
INCLUDEPATH += /usr/include/osgAnimation
INCLUDEPATH += /usr/include/osgDB
INCLUDEPATH += /usr/include/osgGA
INCLUDEPATH += /usr/include/osgManipulator
INCLUDEPATH += /usr/include/osgViewer
INCLUDEPATH += /usr/include/osgUtil



LIBS += -L/usr/lib64 -losgViewer -losgDB -losgUtil -losg -losgSim

HEADERS += \
ViewerQT.h \
AdapterWidget.h \
OSGQtMainWindow.h \
Teapot.h \
SnapImage.h \
SnapImageHandler.h

SOURCES += \
AdapterWidget.cpp \
main.cpp \
OSGQtMainWindow.cpp \
ViewerQT.cpp

FORMS += \
OSGQtWindow.ui

RESOURCES +=


7

Hope it helps.

Cheers,
Sajjadul

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Re: [osg-users] OSG and QT example

[Jan Klimke]

Hi,

is there meanwhile a sort of standard way of integration osg views as qt 
widgets in a way that allows to handle them like normal widgets on the qt side 
? 

Thank you!

Cheers,
Jan

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Re: [osg-users] OSG and QT example

[Don Leich]

The best overview comes from examples/osgQtWidgets/osgQtWidgets.cpp...

//We would need to document the following somewhere in order to guide people on
//what they need to use...
//
//--
//There are two angles to consider.
//
//1. If someone wants a widget in their Qt app to be an OSG-rendered scene, they
//need GraphicsWindowQt (in the osgViewerQtContext example) or QOSGWidget (in 
the
//osgViewerQt example). These two allow both OSG and Qt to manage their threads
//in a way which is optimal to them. We've used QOSGWidget in the past and had
//trouble when Qt tried to overlay other widgets over the QOSGWidget (since OSG
//did its rendering independently of Qt, it would overwrite what Qt had drawn). 
I
//haven't tried GraphicsWindowQt yet, but I expect since it uses QGLWidget, it
//will result in Qt knowing when OSG has drawn and be able to do overlays at the
//right time. Eventually GraphicsWindowQt can be brought into osgViewer I 
imagine...
//
//2. If someone wants to bring Qt widgets inside their OSG scene (to do HUDs or
//an interface on a computer screen which is inside the 3D scene, or even
//floating Qt widgets, for example). That's where QGraphicsViewAdapter +
//QWidgetImage will be useful.
//--

I've used both QOSGWidget and GraphicsWindowQt in full blown Qt applications.
In both cases I made classes that inherited one of the above along with
osgViewer::View.  QOSGWidget works pretty well as is.  I had to break the
GraphicsWindowQt constructor into parts to use a QWidget created elsewhere
in the Qt application.

-Don Leich




 Hi,

 is there meanwhile a sort of standard way of integration osg views as qt 
widgets in a way that allows to handle them like normal widgets on the qt side ?


 Thank you!

 Cheers,
 Jan


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Re: [osg-users] OSG and QT example

[Ben Cain]

mgb_osg wrote:
 Not sure if it's what you mean but you can easily create multiple OSGWidget 
 windows with the same osg scene data in each of them and have different views 
 into the same model in different windows.
 

There are issues thut must be addressed: multi-threading, thread-safety, Qt 
keyboard mapping, and context management.  The Delta3D dtQt plug-in provides a 
wrapper for these issues.  I was wondering if someone had a simple example 
using these (or similar).

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Re: [osg-users] OSG and QT example

[Ben Cain]

LEgregius wrote:
 Hi,
 Yes, it does fix the keyboard issues, at least most of them, and I have done 
 some minor testing with the threading and it seems to work.
 

Hey David,

I'm not sure if this thread is still alive, but have you tested the case of 
rendering a single OSG scene-graph in multiple Qt windows (i.e. sharing the 
same graphics context)?

If so, do you have a Hello, World example of this with the dtQt elements you 
referenced?

Cheers,
   Ben

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Re: [osg-users] OSG and QT problem

[Maxim Gammer]

Thank you for your answer.

I've tried everything you said, but the problem remains...

I went on with experiments and discovered that replacing

 osgViewer::Viewer-setDone(
true);
with

 osgViewer::Viewer  - setSceneData(0);
 osgViewer::Viewer  -frame();
 osgViewer::Viewer-setDone(true);

solves all discussed issues.

I'm not sure though that the call of setSceneData(0) is a correct
solution...

More over, textures on objects are good now, but textures on osgText
still have the same problems. On Widget destruction (in QT) and it's
recreation there are filled sqares insted of text (osgText)...

I wonder what else could be done?

Maxim Gammer


2009/10/29 Eric ZAREMBA eric.zare...@ersa-france.com

  Hi,



 I experiment this. I used an already displayed scene in another viewer. (I
 think you do not reload your nodes).

 So, they are a marker in the osg::Texture which indicates to unref the
 image after apply.

 I thinks it a save memory trick.

 But in our case, the image does not exist anymore when the scene is set to
 the second view.

 So, I wrote a visitor which look into each node of my graph and check the
 stateset.

 I apply it just after loading before insert it in my scene.



 So, my code:

 // osg::StateSet* stateset = …

 osg::StateAttribute* attribute = NULL;

 while( (attribute = stateset-getTextureAttribute(i,
 osg::StateAttribute::TEXTURE)) )

 {

   ++i;

   osg::Texture* tex = dynamic_castosg::Texture*(attribute);

   if( tex )

 tex-setUnRefImageDataAfterApply( false );

 }



 And all should work fine.



 Eric Z.


  --

 *De :* osg-users-boun...@lists.openscenegraph.org [mailto:
 osg-users-boun...@lists.openscenegraph.org] *De la part de* Maxim Gammer
 *Envoyé :* jeudi 29 octobre 2009 12:41
 *À :* OpenSceneGraph Users
 *Objet :* [osg-users] OSG and QT problem



 Hello,

 There is one problem while using OSGViewer in QT:
 first run of Widget goes just fine (1.jpg). After I close it and then
 create it again there is an incorrect picture (2.jpg).
 There is a suspicious chancks in debug info (1.txt and 2.txt):
  returning cached instanced of - tells us that an object wasn't
 deleted. I closed widget though.

 At the first run there are following strings in debug, but they dissapear
 at second run:

 --
 RegisterWindowingSystemInterfa

 ceProxy()
 X11WindowingSystemInterface()
 GraphicsContext::setWindowingSystemInterface() 0x1b26f200x7f39a7ccc890
 ---

 The following strings appear at the moment when I delete OSGViewer:

 
 Warning: deleting still referenced object 0x6b8d378 of type
 'PN3osg10ReferencedE'
  the final reference count was 2, memory corruption possible.
 


 OSG 2.8.2.
 QT 4.5.0

 Where to dig for a solution? Thanx in advance.



 --
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Re: [osg-users] OSG and QT problem

[Jean-Sébastien Guay]

Hi Maxim,


More over, textures on objects are good now, but textures on osgText
still have the same problems. On Widget destruction (in QT) and it's
recreation there are filled sqares insted of text (osgText)...


I've seen this before on osgText, and the solution for me was to 
explicitly call releaseGLObjects() on the nodes that contain osgText 
objects. You can also try to call it on your scene root. This ensures 
that no stale OpenGL objects relating to the old graphics context exist, 
and will force the OSG objects to create new OpenGL objects for the new 
context on the first frame.


Hope this helps,

J-S
--
__
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   http://www.cm-labs.com/
http://whitestar02.webhop.org/
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Re: [osg-users] OSG and QT problem

[Maxim Gammer]

Thank you! )

2009/10/30 Jean-Sébastien Guay jean-sebastien.g...@cm-labs.com

 Hi Maxim,


  More over, textures on objects are good now, but textures on osgText
 still have the same problems. On Widget destruction (in QT) and it's
 recreation there are filled sqares insted of text (osgText)...


 I've seen this before on osgText, and the solution for me was to explicitly
 call releaseGLObjects() on the nodes that contain osgText objects. You can
 also try to call it on your scene root. This ensures that no stale OpenGL
 objects relating to the old graphics context exist, and will force the OSG
 objects to create new OpenGL objects for the new context on the first frame.

 Hope this helps,

 J-S
 --
 __
 Jean-Sebastien Guayjean-sebastien.g...@cm-labs.com
   http://www.cm-labs.com/
http://whitestar02.webhop.org/

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Re: [osg-users] OSG and QT problem

[Eric ZAREMBA]

Hi,

 

I experiment this. I used an already displayed scene in another viewer. (I 
think you do not reload your nodes).

So, they are a marker in the osg::Texture which indicates to unref the image 
after apply.

I thinks it a save memory trick.

But in our case, the image does not exist anymore when the scene is set to the 
second view.

So, I wrote a visitor which look into each node of my graph and check the 
stateset.

I apply it just after loading before insert it in my scene.

 

So, my code:

// osg::StateSet* stateset = ...

osg::StateAttribute* attribute = NULL;

while( (attribute = stateset-getTextureAttribute(i, 
osg::StateAttribute::TEXTURE)) )

{

  ++i;

  osg::Texture* tex = dynamic_castosg::Texture*(attribute);

  if( tex )

tex-setUnRefImageDataAfterApply( false );

}

 

And all should work fine.

 

Eric Z.

 



De : osg-users-boun...@lists.openscenegraph.org 
[mailto:osg-users-boun...@lists.openscenegraph.org] De la part de Maxim Gammer
Envoyé : jeudi 29 octobre 2009 12:41
À : OpenSceneGraph Users
Objet : [osg-users] OSG and QT problem

 

Hello,

There is one problem while using OSGViewer in QT:
first run of Widget goes just fine (1.jpg). After I close it and then create it 
again there is an incorrect picture (2.jpg).
There is a suspicious chancks in debug info (1.txt and 2.txt):
 returning cached instanced of - tells us that an object wasn't 
deleted. I closed widget though. 

At the first run there are following strings in debug, but they dissapear at 
second run:

--
RegisterWindowingSystemInterfa

ceProxy()
X11WindowingSystemInterface()
GraphicsContext::setWindowingSystemInterface() 0x1b26f200x7f39a7ccc890
---

The following strings appear at the moment when I delete OSGViewer:


Warning: deleting still referenced object 0x6b8d378 of type 
'PN3osg10ReferencedE'
 the final reference count was 2, memory corruption possible.



OSG 2.8.2.
QT 4.5.0

Where to dig for a solution? Thanx in advance.



-- 
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[osg-users] OSG and QT integration problem

[Максим Гаммер]

Hi.

There is a problem of my program and QT integration. Problem occurs
when I'm trying to use OSG ModularEmitter for particle creation.

In process of compilation I get the following:
...
/usr/local/include/
osgParticle/ModularEmitter:89: error: expected unqualified-id before ‘double’
...
ModularEmitter, line 89 : virtual void emit(double dt);


I think the problem is in the name of method virtual void emit(double
dt), because emit is a preprocessor word in QT, (like  slot,
signal, emit...)


Any ideas how could I compile my project? )
--
Gammer Maxim
TSOGU, Tyumen, Russia
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Re: [osg-users] OSG and QT example

[Richard Baron Penman]

hi David,

I'm also interested in your work. Like Simon I had problems with QOSGWidget
and was frustrated with the limitations of AdapterWidget.

Richard


On Mon, May 11, 2009 at 11:19 PM, Simon Loic simon1l...@gmail.com wrote:

 Hi David,

 Just to answer your point, I would be personally interested in such an
 integration.
 So far I'm using the AdapterWidget of the ViewerQt example but I'm not
 fully satisfied. Indeed it suffers a couple of problems as :
 - the lack of multiple thread support
 - a bad translation between QT keyboard events and OSG one.

 I had a quick look to the code you pointed and both seems to be handled in
 it (tell me if I'm wrong).

 As for the QOSGWidget, I tried to embed it in a QtDesigner based GUI and I
 must confess I couldn't make it. May be I dind't try hard enough. Yet if
 someone could provide such an example (ie without the trick to avoid the moc
 steps and so on), that would be hell of a tip.

 Thanks




 On Thu, May 7, 2009 at 8:43 PM, David Guthrie 
 dguth...@alionscience.comwrote:

 Hi,

 We wrote a QT/OSG integration that implements the windowing system
 interface for qt.

 It's in the delta3d dtQt library.  It seems like the sort of thing that
 should be part of OSG, we just haven't submitted it.  If there is interest,
 we can look at what the code should look like and where it should go...

 Look at

 https://delta3d.svn.sourceforge.net/svnroot/delta3d/trunk/delta3d/inc/dtQt
 https://delta3d.svn.sourceforge.net/svnroot/delta3d/trunk/delta3d/src/dtQt

 at the files

 osgadapterwidget.h
 osggraphicswindowqt.h
 qtguiwindowsystemwrapper.h

 osgadapterwidget.cpp
 osggraphicswindowqt.cpp
 qtguiwindowsystemwrapper.cpp

 Thank you!
 David Guthrie

 --
 Read this topic online here:
 http://forum.openscenegraph.org/viewtopic.php?p=11639#11639





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Re: [osg-users] OSG and QT integration problem

[Ismail Pazarbasi]

On Wed, May 13, 2009 at 9:02 AM, Максим Гаммер maxgam...@gmail.com wrote:
 Hi.

 There is a problem of my program and QT integration. Problem occurs
 when I'm trying to use OSG ModularEmitter for particle creation.

 In process of compilation I get the following:
 ...
 /usr/local/include/
 osgParticle/ModularEmitter:89: error: expected unqualified-id before ‘double’
 ...
 ModularEmitter, line 89 : virtual void emit(double dt);


 I think the problem is in the name of method virtual void emit(double
 dt), because emit is a preprocessor word in QT, (like  slot,
 signal, emit...)


 Any ideas how could I compile my project? )
 --
 Gammer Maxim
 TSOGU, Tyumen, Russia
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Hi Gammer,

try to include QT _after_ OSG headers in all translation units.
Alternatively, you may temporarily undef macro then set it back. I am
not sure about its side effects; ensure that no header file directly
or indirectly loads an include file that has requires macro.

#ifdef MACRO1
#define MACRO1_SAVE MACRO1
#endif
#undef MACRO1

// include osg code here, may be?

#ifdef MACRO1_SAVE
#define MACRO1 UIQ_SAVE
#undef MACRO1_SAVE
#endif

MACRO1, in your case, is emit.

HTH
Ismail
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Re: [osg-users] OSG and QT integration problem

[Sergey Kurdakov]

Hi Maxim.

BTW - in order everyone can address you properly, make some effort
which makes it easier.

example - do not use Cyrillic letters in mail header - it is not
russian mail list.

Next - sign so that is was clear what is your name and what is your surname.
as you could see from your sign it follows that your name is Gammer.

I call to you as here maintainers try to keep a special developer
atmosphere. So too much impersonal mails harms discussions.

Спасибо за понимание.

Regards
Sergey

On Wed, May 13, 2009 at 11:02 AM, Максим Гаммер maxgam...@gmail.com wrote:
 Hi.

 There is a problem of my program and QT integration. Problem occurs
 when I'm trying to use OSG ModularEmitter for particle creation.

 In process of compilation I get the following:
 ...
 /usr/local/include/
 osgParticle/ModularEmitter:89: error: expected unqualified-id before 'double'
 ...
 ModularEmitter, line 89 : virtual void emit(double dt);


 I think the problem is in the name of method virtual void emit(double
 dt), because emit is a preprocessor word in QT, (like  slot,
 signal, emit...)


 Any ideas how could I compile my project? )
 --
 Gammer Maxim
 TSOGU, Tyumen, Russia
 ___
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Re: [osg-users] OSG and QT integration problem

[Maxim Gammer]

 Thanks!

13 мая 2009 г. 17:15 пользователь Sergey Kurdakov
sergey.fo...@gmail.com написал:
 Hi Maxim.

 BTW - in order everyone can address you properly, make some effort
 which makes it easier.

 example - do not use Cyrillic letters in mail header - it is not
 russian mail list.

 Next - sign so that is was clear what is your name and what is your surname.
 as you could see from your sign it follows that your name is Gammer.

 I call to you as here maintainers try to keep a special developer
 atmosphere. So too much impersonal mails harms discussions.

 Спасибо за понимание.

 Regards
 Sergey

 On Wed, May 13, 2009 at 11:02 AM, Максим Гаммер maxgam...@gmail.com wrote:
 Hi.

 There is a problem of my program and QT integration. Problem occurs
 when I'm trying to use OSG ModularEmitter for particle creation.

 In process of compilation I get the following:
 ...
 /usr/local/include/
 osgParticle/ModularEmitter:89: error: expected unqualified-id before 'double'
 ...
 ModularEmitter, line 89 : virtual void emit(double dt);


 I think the problem is in the name of method virtual void emit(double
 dt), because emit is a preprocessor word in QT, (like  slot,
 signal, emit...)


 Any ideas how could I compile my project? )
 --
 Gammer Maxim
 TSOGU, Tyumen, Russia
 ___
 ___
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 osg-users@lists.openscenegraph.org
 http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org




-- 
Гаммер Максим Дмитриевич
Начальник отдела ИТ НИИ ЭОР
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Re: [osg-users] OSG and QT integration problem

[Maxim Gammer]

 Thanks!

13 мая 2009 г. 18:08 пользователь Maxim Gammer maxgam...@gmail.com написал:
  Thanks!

 13 мая 2009 г. 17:15 пользователь Sergey Kurdakov
 sergey.fo...@gmail.com написал:
 Hi Maxim.

 BTW - in order everyone can address you properly, make some effort
 which makes it easier.

 example - do not use Cyrillic letters in mail header - it is not
 russian mail list.

 Next - sign so that is was clear what is your name and what is your surname.
 as you could see from your sign it follows that your name is Gammer.

 I call to you as here maintainers try to keep a special developer
 atmosphere. So too much impersonal mails harms discussions.

 Спасибо за понимание.

 Regards
 Sergey

 On Wed, May 13, 2009 at 11:02 AM, Максим Гаммер maxgam...@gmail.com wrote:
 Hi.

 There is a problem of my program and QT integration. Problem occurs
 when I'm trying to use OSG ModularEmitter for particle creation.

 In process of compilation I get the following:
 ...
 /usr/local/include/
 osgParticle/ModularEmitter:89: error: expected unqualified-id before 
 'double'
 ...
 ModularEmitter, line 89 : virtual void emit(double dt);


 I think the problem is in the name of method virtual void emit(double
 dt), because emit is a preprocessor word in QT, (like  slot,
 signal, emit...)


 Any ideas how could I compile my project? )
 --
 Gammer Maxim
 TSOGU, Tyumen, Russia
 ___
 ___
 osg-users mailing list
 osg-users@lists.openscenegraph.org
 http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org




 --
 Гаммер Максим Дмитриевич
 Начальник отдела ИТ НИИ ЭОР




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Re: [osg-users] OSG and QT example

[Simon Loic]

Hi David,

Just to answer your point, I would be personally interested in such an
integration.
So far I'm using the AdapterWidget of the ViewerQt example but I'm not fully
satisfied. Indeed it suffers a couple of problems as :
- the lack of multiple thread support
- a bad translation between QT keyboard events and OSG one.

I had a quick look to the code you pointed and both seems to be handled in
it (tell me if I'm wrong).

As for the QOSGWidget, I tried to embed it in a QtDesigner based GUI and I
must confess I couldn't make it. May be I dind't try hard enough. Yet if
someone could provide such an example (ie without the trick to avoid the moc
steps and so on), that would be hell of a tip.

Thanks



On Thu, May 7, 2009 at 8:43 PM, David Guthrie dguth...@alionscience.comwrote:

 Hi,

 We wrote a QT/OSG integration that implements the windowing system
 interface for qt.

 It's in the delta3d dtQt library.  It seems like the sort of thing that
 should be part of OSG, we just haven't submitted it.  If there is interest,
 we can look at what the code should look like and where it should go...

 Look at

 https://delta3d.svn.sourceforge.net/svnroot/delta3d/trunk/delta3d/inc/dtQt
 https://delta3d.svn.sourceforge.net/svnroot/delta3d/trunk/delta3d/src/dtQt

 at the files

 osgadapterwidget.h
 osggraphicswindowqt.h
 qtguiwindowsystemwrapper.h

 osgadapterwidget.cpp
 osggraphicswindowqt.cpp
 qtguiwindowsystemwrapper.cpp

 Thank you!
 David Guthrie

 --
 Read this topic online here:
 http://forum.openscenegraph.org/viewtopic.php?p=11639#11639





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Re: [osg-users] OSG and QT example

[David Guthrie]

Hi,

Yes, it does fix the keyboard issues, at least most of them, and I have done 
some minor testing with the threading and it seems to work.

... 

Thank you!

Cheers,
David

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[osg-users] OSG and QT example

[paul1492]

Is there a more complex example of using QT (4.5) with OSG (2.8) than the 
osgviewerQT example?  I want to use the AdapterWidget and interface an OSG 
viewer to a QT form which has been designed with buttons/controls using QT 
Designer.

Thanks in advance,
Paul P.


  
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Re: [osg-users] OSG and QT example

[Martin Beckett]

Unless I'm misunderstanding there are already two ways to integrate osg with Qt 
(QOSGWidget and adapterWidget - plus a few composite versions)

The osgviewerQT example is a little artificial to avoid the moc step. which is 
what I thought the OP was asking about.

It would be nice to integrate the Qt widgets into QOSGWidget so that you can 
have Qt controls drawn (eg with transparency) onto the OSG view - as described 
here 
http://labs.trolltech.com/blogs/2008/06/27/accelerate-your-widgets-with-opengl/
I was taking a look at it but more important stuff came up ;-(

It does seem that doing everything in OpenGL is part of the Qt future strategy 
- which can only be good for OSG.

Cheers,
Martin Beckett

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