date:20180302

Re: [osg-users] osg::Node can not be displayed front of the Earth on the screen

2018-03-02 Thread Trajce Nikolov NICK

if you need to draw anything on the center of the screen in front of
something else, then your problem is to create an ortho camera and have
your geometry there - something like HUD. The osghud example shows how to
do this. Just for a test, you can use the createHUD() function from that
sample to create your screen geometry in front of the osgEarth globe

On Fri, Mar 2, 2018 at 4:23 PM, Ali Ozdin  wrote:

> I could not relate the example with my question. I am using osgEarth.
> Can you be more expressive what causes this?
>
> Thanks,
>
>
> Trajce Nikolov NICK wrote:
> > Hi Ali,
> >
> > have a look at the osghud example from the osg repo
> >
> >
> > On Fri, Mar 2, 2018 at 1:44 PM, Ali Ozdin < ()> wrote:
> >
> > > Hi,
> > >
> > > I drew an osg Node and I want to put it on the center of the screen
> like any labelControl. How can I do that? I put a sample code below.
> > >
> > > If I change the line from
> > >
> > > Code:
> > > viewer.setSceneData( mainGroup );
> > >
> > >  to
> > > Code:
> > > viewer.setSceneData( nn.get() );
> > >
> > >
> > > and remove these two lines
> > >
> > > Code:
> > > manipulator = new EarthManipulator(  arguments );
> > > viewer.setCameraManipulator( manipulator );
> > >
> > >
> > >
> > > I am only able to see the geometry which I draw. However if I
> setSceneData as mapNode and geometry which are in "mainGroup" and if my
> camera manipulator is EarthManipulator; I am only able to see the earth.
> > > To sum up, I want to see the earth in the back and I want to put my
> geometry front of the earth and on the center of the screen.
> > >
> > >
> > >
> > >
> > > Code:
> > > osg::ref_ptr createSceneGraph()
> > > {
> > > osg::ref_ptr geom = new osg::Geometry;
> > > osg::ref_ptr v = new osg::Vec3Array;
> > > geom->setVertexArray( v.get() );
> > >
> > > //horizontal
> > > v->push_back( osg::Vec3( -1.f, 1.f, 0.f ) );
> > > v->push_back( osg::Vec3( -0.6f, 1.f, 0.f ) );
> > > v->push_back( osg::Vec3( -0.4f, 1.f, 0.f ) );
> > > v->push_back( osg::Vec3( 0.f, 1.f, 0.f ) );
> > >
> > > //vertical
> > > v->push_back( osg::Vec3( -0.5f, 1.f, 0.5f ) );
> > > v->push_back( osg::Vec3( -0.5f, 1.f, 0.1f ) );
> > > v->push_back( osg::Vec3( -0.5f, 1.f, -0.5f ) );
> > > v->push_back( osg::Vec3( -0.5f, 1.f, -0.1f ) );
> > >
> > >
> > > osg::ref_ptr c = new osg::Vec4Array;
> > > geom->setColorArray( c.get() );
> > > geom->setColorBinding( osg::Geometry::BIND_OVERALL );
> > > c->push_back( osg::Vec4( 1.f, 1.f, 1.f, 1.f ) );
> > >
> > > osg::ref_ptr n = new osg::Vec3Array;
> > > geom->setNormalArray( n.get() );
> > > geom->setNormalBinding( osg::Geometry::BIND_OVERALL );
> > > n->push_back( osg::Vec3( 0.f, -1.f, 0.f ) );
> > >
> > > osg::LineWidth* linewdth = new osg::LineWidth();
> > > linewdth->setWidth(25.0);
> > > geom->getOrCreateStateSet()->setAttributeAndModes( linewdth,
> osg::StateAttribute::ON ) ;
> > > geom->addPrimitiveSet( new osg::DrawArrays( osg::PrimitiveSet::LINES,
> 0, 8 ) );
> > >
> > > osg::ref_ptr geode = new osg::Geode;
> > > geode->addDrawable( geom.get() );
> > > return geode.get();
> > > }
> > >
> > > int main(int argc, char** argv)
> > > {
> > > osg::ArgumentParser arguments(,argv);
> > > viewer.setUpViewInWindow(100,100,500,500);
> > > viewer.getDatabasePager()->setUnrefImageDataAfterApplyPolicy( true,
> false );
> > > osgDB::Registry::instance()->getObjectWrapperManager()->
> findWrapper("osg::Image");
> > > manipulator = new EarthManipulator( arguments );
> > > viewer.setCameraManipulator( manipulator );
> > >
> > > osg::Group* mainGroup = new osg::Group();
> > > osg::Group* group = MapNodeHelper().load(arguments, );
> > > osg::ref_ptr nn = createSceneGraph();
> > >
> > > mainGroup->addChild(nn.get());
> > > mainGroup->addChild(group);
> > >
> > > viewer.setSceneData( mainGroup );
> > > viewer.run();
> > > }
> > >
> > >
> > >
> > > Thank you!
> > >
> > > Cheers,
> > > Ali
> > >
> > > --
> > > Read this topic online here:
> > > http://forum.openscenegraph.org/viewtopic.php?p=72998#72998 (
> http://forum.openscenegraph.org/viewtopic.php?p=72998#72998)
> > >
> > >
> > >
> > >
> > >
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> openscenegraph.org (http://lists.openscenegraph.
> org/listinfo.cgi/osg-users-openscenegraph.org)
> > >
> >
> >
> >
> >
> > --
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> >
> >  --
> > Post generated by Mail2Forum
>
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Re: [osg-users] Read frame buffer back into main memory

2018-03-02 Thread Robert Osfield

Hi Antoine,

You can just do your glReadPixels(..) or osg::Image::readPixels(..) in
your own Camera::DrawCallback that you attach as a post draw callback
to your camera.

Robert.

On 2 March 2018 at 16:12, Antoine Rennuit  wrote:
> Hi all,
>
> Hum, it seems my case is a bit more complex than expected. The camera I want 
> to read the buffer from is a custom created camera:
>
>
> Code:
> // Curvatures camera.
> m_curvaturesCamera = new osg::Camera();
> m_curvaturesCamera->setClearMask(GL_DEPTH_BUFFER_BIT); // The camera only 
> clears the depth buffer before rendering (not the color buffer).
> m_curvaturesCamera->setRenderOrder(osg::Camera::PRE_RENDER);
> m_curvaturesCamera->setReferenceFrame(osg::Camera::RELATIVE_RF);
>
>
>
>
> I have had a look at osg::Image, but it does not seem very clear which 
> function to use and above all, how I shall indicate  to the osg::image which 
> camera it needs to read from.
>
> Any idea?
>
> Thank you!
>
> Cheers,
>
> Antoine.[/code]
>
> --
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> http://forum.openscenegraph.org/viewtopic.php?p=73002#73002
>
>
>
>
>
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Re: [osg-users] Can see parts of the back side of a model

2018-03-02 Thread Robert Osfield

Hi Sebastian,

On 2 March 2018 at 15:44, Sebastian Schmidt  wrote:
> Hi, i have a similar problem and dont want to create a new thread.
>
> Unfortunately i couldnt fix the problem with these solutions here.

It's a different problem then, so worthy of it's own thread.  It'll be
a different problem with a different solution.  Could you start a
fresh thread and if possible give a bit more background the model, and
how you are rendering it.

Robert.
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Re: [osg-users] osg::Geode is not seen when added as child on osgEarth

2018-03-02 Thread Robert Osfield

On 2 March 2018 at 12:43, Ali Ozdin  wrote:
> Any idea?

This is an osgEarth question so only users/developers of osgEarth will
be able to provide an answer.  Many of the osgEarh community are here
in the main osg-users community as well but perhaps less active on
osgEarth topics than they would be within the osgEarth forum, so if
you don't get a quick answer try there.

Robert.
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Re: [osg-users] Read frame buffer back into main memory

2018-03-02 Thread Antoine Rennuit

Hi all,

Hum, it seems my case is a bit more complex than expected. The camera I want to 
read the buffer from is a custom created camera:


Code:
// Curvatures camera.
m_curvaturesCamera = new osg::Camera();
m_curvaturesCamera->setClearMask(GL_DEPTH_BUFFER_BIT); // The camera only 
clears the depth buffer before rendering (not the color buffer).
m_curvaturesCamera->setRenderOrder(osg::Camera::PRE_RENDER);
m_curvaturesCamera->setReferenceFrame(osg::Camera::RELATIVE_RF);




I have had a look at osg::Image, but it does not seem very clear which function 
to use and above all, how I shall indicate  to the osg::image which camera it 
needs to read from.

Any idea?

Thank you!

Cheers,

Antoine.[/code]

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Re: [osg-users] Can see parts of the back side of a model

2018-03-02 Thread Sebastian Schmidt

Hi, i have a similar problem and dont want to create a new thread.

Unfortunately i couldnt fix the problem with these solutions here.

What you can see is the back of a plane with enabled front (transparency) or 
back (black/no lightning) face culling.[/img]


OSG Version: 3.4.1
OS: OpenSuse Leap 42.1

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Re: [osg-users] osg::Node can not be displayed front of the Earth on the screen

2018-03-02 Thread Ali Ozdin

I could not relate the example with my question. I am using osgEarth.
Can you be more expressive what causes this?

Thanks,


Trajce Nikolov NICK wrote:
> Hi Ali,
> 
> have a look at the osghud example from the osg repo
> 
> 
> On Fri, Mar 2, 2018 at 1:44 PM, Ali Ozdin < ()> wrote:
> 
> > Hi,
> > 
> > I drew an osg Node and I want to put it on the center of the screen like 
> > any labelControl. How can I do that? I put a sample code below.
> > 
> > If I change the line from
> > 
> > Code:
> > viewer.setSceneData( mainGroup );
> > 
> >  to
> > Code:
> > viewer.setSceneData( nn.get() );
> > 
> > 
> > and remove these two lines
> > 
> > Code:
> > manipulator = new EarthManipulator(  arguments );
> > viewer.setCameraManipulator( manipulator );
> > 
> > 
> > 
> > I am only able to see the geometry which I draw. However if I setSceneData 
> > as mapNode and geometry which are in "mainGroup" and if my camera 
> > manipulator is EarthManipulator; I am only able to see the earth.
> > To sum up, I want to see the earth in the back and I want to put my 
> > geometry front of the earth and on the center of the screen.
> > 
> > 
> > 
> > 
> > Code:
> > osg::ref_ptr createSceneGraph()
> > {
> > osg::ref_ptr geom = new osg::Geometry;
> > osg::ref_ptr v = new osg::Vec3Array;
> > geom->setVertexArray( v.get() );
> > 
> > //horizontal
> > v->push_back( osg::Vec3( -1.f, 1.f, 0.f ) );
> > v->push_back( osg::Vec3( -0.6f, 1.f, 0.f ) );
> > v->push_back( osg::Vec3( -0.4f, 1.f, 0.f ) );
> > v->push_back( osg::Vec3( 0.f, 1.f, 0.f ) );
> > 
> > //vertical
> > v->push_back( osg::Vec3( -0.5f, 1.f, 0.5f ) );
> > v->push_back( osg::Vec3( -0.5f, 1.f, 0.1f ) );
> > v->push_back( osg::Vec3( -0.5f, 1.f, -0.5f ) );
> > v->push_back( osg::Vec3( -0.5f, 1.f, -0.1f ) );
> > 
> > 
> > osg::ref_ptr c = new osg::Vec4Array;
> > geom->setColorArray( c.get() );
> > geom->setColorBinding( osg::Geometry::BIND_OVERALL );
> > c->push_back( osg::Vec4( 1.f, 1.f, 1.f, 1.f ) );
> > 
> > osg::ref_ptr n = new osg::Vec3Array;
> > geom->setNormalArray( n.get() );
> > geom->setNormalBinding( osg::Geometry::BIND_OVERALL );
> > n->push_back( osg::Vec3( 0.f, -1.f, 0.f ) );
> > 
> > osg::LineWidth* linewdth = new osg::LineWidth();
> > linewdth->setWidth(25.0);
> > geom->getOrCreateStateSet()->setAttributeAndModes( linewdth, 
> > osg::StateAttribute::ON ) ;
> > geom->addPrimitiveSet( new osg::DrawArrays( osg::PrimitiveSet::LINES, 0, 8 
> > ) );
> > 
> > osg::ref_ptr geode = new osg::Geode;
> > geode->addDrawable( geom.get() );
> > return geode.get();
> > }
> > 
> > int main(int argc, char** argv)
> > {
> > osg::ArgumentParser arguments(,argv);
> > viewer.setUpViewInWindow(100,100,500,500);
> > viewer.getDatabasePager()->setUnrefImageDataAfterApplyPolicy( true, false );
> > osgDB::Registry::instance()->getObjectWrapperManager()->findWrapper("osg::Image");
> > manipulator = new EarthManipulator( arguments );
> > viewer.setCameraManipulator( manipulator );
> > 
> > osg::Group* mainGroup = new osg::Group();
> > osg::Group* group = MapNodeHelper().load(arguments, );
> > osg::ref_ptr nn = createSceneGraph();
> > 
> > mainGroup->addChild(nn.get());
> > mainGroup->addChild(group);
> > 
> > viewer.setSceneData( mainGroup );
> > viewer.run();
> > }
> > 
> > 
> > 
> > Thank you!
> > 
> > Cheers,
> > Ali
> > 
> > --
> > Read this topic online here:
> > http://forum.openscenegraph.org/viewtopic.php?p=72998#72998 
> > (http://forum.openscenegraph.org/viewtopic.php?p=72998#72998)
> > 
> > 
> > 
> > 
> > 
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> > 
> 
> 
> 
> 
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> 
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Re: [osg-users] osg::Node can not be displayed front of the Earth on the screen

2018-03-02 Thread Trajce Nikolov NICK

Hi Ali,

have a look at the osghud example from the osg repo

On Fri, Mar 2, 2018 at 1:44 PM, Ali Ozdin  wrote:

> Hi,
>
> I drew an osg Node and I want to put it on the center of the screen like
> any labelControl. How can I do that? I put a sample code below.
>
> If I change the line from
>
> Code:
> viewer.setSceneData( mainGroup );
>
>  to
> Code:
> viewer.setSceneData( nn.get() );
>
>
> and remove these two lines
>
> Code:
> manipulator = new EarthManipulator(  arguments );
> viewer.setCameraManipulator( manipulator );
>
>
>
> I am only able to see the geometry which I draw. However if I setSceneData
> as mapNode and geometry which are in "mainGroup" and if my camera
> manipulator is EarthManipulator; I am only able to see the earth.
> To sum up, I want to see the earth in the back and I want to put my
> geometry front of the earth and on the center of the screen.
>
>
>
>
> Code:
> osg::ref_ptr createSceneGraph()
> {
> osg::ref_ptr geom = new osg::Geometry;
> osg::ref_ptr v = new osg::Vec3Array;
> geom->setVertexArray( v.get() );
>
> //horizontal
> v->push_back( osg::Vec3( -1.f, 1.f, 0.f ) );
> v->push_back( osg::Vec3( -0.6f, 1.f, 0.f ) );
> v->push_back( osg::Vec3( -0.4f, 1.f, 0.f ) );
> v->push_back( osg::Vec3( 0.f, 1.f, 0.f ) );
>
> //vertical
> v->push_back( osg::Vec3( -0.5f, 1.f, 0.5f ) );
> v->push_back( osg::Vec3( -0.5f, 1.f, 0.1f ) );
> v->push_back( osg::Vec3( -0.5f, 1.f, -0.5f ) );
> v->push_back( osg::Vec3( -0.5f, 1.f, -0.1f ) );
>
>
> osg::ref_ptr c = new osg::Vec4Array;
> geom->setColorArray( c.get() );
> geom->setColorBinding( osg::Geometry::BIND_OVERALL );
> c->push_back( osg::Vec4( 1.f, 1.f, 1.f, 1.f ) );
>
> osg::ref_ptr n = new osg::Vec3Array;
> geom->setNormalArray( n.get() );
> geom->setNormalBinding( osg::Geometry::BIND_OVERALL );
> n->push_back( osg::Vec3( 0.f, -1.f, 0.f ) );
>
> osg::LineWidth* linewdth = new osg::LineWidth();
> linewdth->setWidth(25.0);
> geom->getOrCreateStateSet()->setAttributeAndModes( linewdth,
> osg::StateAttribute::ON ) ;
> geom->addPrimitiveSet( new osg::DrawArrays( osg::PrimitiveSet::LINES, 0, 8
> ) );
>
> osg::ref_ptr geode = new osg::Geode;
> geode->addDrawable( geom.get() );
> return geode.get();
> }
>
> int main(int argc, char** argv)
> {
> osg::ArgumentParser arguments(,argv);
> viewer.setUpViewInWindow(100,100,500,500);
> viewer.getDatabasePager()->setUnrefImageDataAfterApplyPolicy( true, false
> );
> osgDB::Registry::instance()->getObjectWrapperManager()->
> findWrapper("osg::Image");
> manipulator = new EarthManipulator( arguments );
> viewer.setCameraManipulator( manipulator );
>
> osg::Group* mainGroup = new osg::Group();
> osg::Group* group = MapNodeHelper().load(arguments, );
> osg::ref_ptr nn = createSceneGraph();
>
> mainGroup->addChild(nn.get());
> mainGroup->addChild(group);
>
> viewer.setSceneData( mainGroup );
> viewer.run();
> }
>
>
>
> Thank you!
>
> Cheers,
> Ali
>
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> http://forum.openscenegraph.org/viewtopic.php?p=72998#72998
>
>
>
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[osg-users] osg::Node can not be displayed front of the Earth on the screen

2018-03-02 Thread Ali Ozdin

Hi,

I drew an osg Node and I want to put it on the center of the screen like any 
labelControl. How can I do that? I put a sample code below. 

If I change the line from 

Code:
viewer.setSceneData( mainGroup );

 to 
Code:
viewer.setSceneData( nn.get() );


and remove these two lines 

Code:
manipulator = new EarthManipulator(  arguments ); 
viewer.setCameraManipulator( manipulator ); 



I am only able to see the geometry which I draw. However if I setSceneData as 
mapNode and geometry which are in "mainGroup" and if my camera manipulator is 
EarthManipulator; I am only able to see the earth. 
To sum up, I want to see the earth in the back and I want to put my geometry 
front of the earth and on the center of the screen. 




Code:
osg::ref_ptr createSceneGraph() 
{ 
osg::ref_ptr geom = new osg::Geometry; 
osg::ref_ptr v = new osg::Vec3Array; 
geom->setVertexArray( v.get() ); 

//horizontal 
v->push_back( osg::Vec3( -1.f, 1.f, 0.f ) ); 
v->push_back( osg::Vec3( -0.6f, 1.f, 0.f ) ); 
v->push_back( osg::Vec3( -0.4f, 1.f, 0.f ) ); 
v->push_back( osg::Vec3( 0.f, 1.f, 0.f ) ); 

//vertical 
v->push_back( osg::Vec3( -0.5f, 1.f, 0.5f ) ); 
v->push_back( osg::Vec3( -0.5f, 1.f, 0.1f ) ); 
v->push_back( osg::Vec3( -0.5f, 1.f, -0.5f ) ); 
v->push_back( osg::Vec3( -0.5f, 1.f, -0.1f ) ); 


osg::ref_ptr c = new osg::Vec4Array; 
geom->setColorArray( c.get() ); 
geom->setColorBinding( osg::Geometry::BIND_OVERALL ); 
c->push_back( osg::Vec4( 1.f, 1.f, 1.f, 1.f ) ); 

osg::ref_ptr n = new osg::Vec3Array; 
geom->setNormalArray( n.get() ); 
geom->setNormalBinding( osg::Geometry::BIND_OVERALL ); 
n->push_back( osg::Vec3( 0.f, -1.f, 0.f ) ); 

osg::LineWidth* linewdth = new osg::LineWidth(); 
linewdth->setWidth(25.0); 
geom->getOrCreateStateSet()->setAttributeAndModes( linewdth, 
osg::StateAttribute::ON ) ; 
geom->addPrimitiveSet( new osg::DrawArrays( osg::PrimitiveSet::LINES, 0, 8 ) ); 

osg::ref_ptr geode = new osg::Geode; 
geode->addDrawable( geom.get() ); 
return geode.get(); 
} 

int main(int argc, char** argv) 
{ 
osg::ArgumentParser arguments(,argv); 
viewer.setUpViewInWindow(100,100,500,500); 
viewer.getDatabasePager()->setUnrefImageDataAfterApplyPolicy( true, false ); 
osgDB::Registry::instance()->getObjectWrapperManager()->findWrapper("osg::Image");
 
manipulator = new EarthManipulator( arguments ); 
viewer.setCameraManipulator( manipulator ); 

osg::Group* mainGroup = new osg::Group(); 
osg::Group* group = MapNodeHelper().load(arguments, ); 
osg::ref_ptr nn = createSceneGraph(); 

mainGroup->addChild(nn.get()); 
mainGroup->addChild(group); 

viewer.setSceneData( mainGroup ); 
viewer.run(); 
}



Thank you!

Cheers,
Ali

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Re: [osg-users] osg::Geode is not seen when added as child on osgEarth

2018-03-02 Thread Ali Ozdin

Any idea?

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Re: [osg-users] set cullface mode in osg file

2018-03-02 Thread Voerman, L.

Hi Sebastian,

Geode {...
Geometry { ...
 StateSet { ...
   GL_CULL_FACE ON
Material {  }
CullFace {
mode BACK
}

For no culling use  GL_CULL_FACE OVERRIDE|OFF
To cull front faces use mode FRONT.
To cull all faces use mode FRONT_AND_BACK
Regards, Laurens.

On Fri, Mar 2, 2018 at 11:07 AM, Sebastian Schmidt 
wrote:

> Hi,
>
> What is the correct syntax to enable front or backface culling in an osg
> file?
>
> For example:
>
> Geode {...
> Geometry { ...
>  StateSet { ...
> GL_CULL_FACE ON
> ...
>  Material {
>
> 
> OSG Version: 3.4.1
> OS: OpenSuse Leap 42.1
>
> --
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=72995#72995
>
>
>
>
>
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>
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[osg-users] set cullface mode in osg file

2018-03-02 Thread Sebastian Schmidt

Hi,

What is the correct syntax to enable front or backface culling in an osg file?

For example:

Geode {...
Geometry { ...
 StateSet { ...
GL_CULL_FACE ON
... 
Material {


OSG Version: 3.4.1
OS: OpenSuse Leap 42.1

--
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=72995#72995





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Re: [osg-users] set cullface mode in osg file

[osg-users] set cullface mode in osg file

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