[osg-users] Masking (hiding) a subset of primitives?

[Andrew Cunningham]

I want to do something a little 'odd' and am not sure of the best way to do 
this.
- assuming a 'large' number of (tri or quad) primitives in a primitiveset (say 
100K-500K+) I want to hide ( not draw)  a user-defined subset of those 
primitives. 

- the user scenario is that the user selects a subset of primitives from the 
full geometry then "hides" them. The user can also "Un-hide" any hidden 
primitives at any time.

- I could laboriously keep multiple geometries but was wondering if it is 
possible to override one of the drawing functions to "test" for membership in a 
hidden set for each primitive. Obviously this would follow the slow path, Or 
???. I have looked at the primitiveset drawing code but got lost in the 
complexity of VBO vs displaylist vs slow path etc.


Thanks
Andrew

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Re: [osg-users] [vpb] how to create valid terrain database?

[Hartwig Wiesmann]

Hi,

sorry, but with "anything useful" I meant that osgviewer test.osg is not 
displaying anything and it seems to be that no height data is stored in the 
database.


Thank you!

Cheers,
Hartwig

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[osg-users] [vpb] how to create valid terrain database?

[Hartwig Wiesmann]

Hi,

I am using osgdem 0.9.10 with the following arguments:

osgdem --xx 10 --yy 10 -t ps_texture_16k.tif\
--xx 10 --yy 10 -d ps_height_16k.tif\
-v 0.1 --terrain -o test.osg

Unfortunately, this does not produce anything useful. So, it seems to be that 
an argument is missing to create a valid database. But what argument?
Removing "--terrain" builds a valid osg::Geode base database. 

Cheers,
Hartwig

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Re: [osg-users] Full list of dependencies

[Trajce Nikolov]

are you using CMake? it is easy 
Nick

http://www.linkedin.com/in/tnikolov
Sent from Örnek, İstanbul, Turkey

On Sun, Dec 6, 2009 at 8:02 PM, Rizzen  wrote:

> osgIntrospection and osgWrappers comes with the OSG core, but are
> optional modules. How does one build these optional modules?
>
> I have found the other required 3rd party modules and built them already.
>
> Rizzen
>
> Trajce Nikolov wrote:
> > you can get all of them from the svn  look in the archive for the
> > details . do a search for 3rdParty 
> >
> > Nick
> >
> > http://www.linkedin.com/in/tnikolov
> > Sent from Örnek, İstanbul, Turkey
> >
> > On Sun, Dec 6, 2009 at 7:25 PM, Rizzen  > > wrote:
> >
> > Thanx, though did not help with building the optional modules of OSG
> > 2.8. What must be done to get these optional OSG modules built?
> >
> > Rizzen
> >
> > Gordon Tomlinson wrote:
> > >
> > > Here’s the basic dependencies
> > >
> >
> http://www.openscenegraph.org/projects/osg/wiki/Downloads/Dependencies
> > >
> > >
> > >
> > > All the rest will be described with the individual plug-ins or
> > add-on
> > > node  kits
> > >
> > >
> > >
> > >
> >
> __
> > >
> > > /Gordon Tomlinson /
> > >
> > > /gor...@gordontomlinson.com  > >/
> > > IM: /gordon3db...@3dscenegraph.com
> > 
> >  > >/
> > > /www.vis-sim.com 
> >  www.gordontomlinson.com
> > 
> > > /
> > >
> > >
> >
> __
> > >
> > >
> > >
> > > *From:* osg-users-boun...@lists.openscenegraph.org
> > 
> > > [mailto:osg-users-boun...@lists.openscenegraph.org
> > ] *On Behalf Of
> > > *Simon Hammett
> > > *Sent:* Sunday, December 06, 2009 10:48 AM
> > > *To:* OpenSceneGraph Users
> > > *Subject:* Re: [osg-users] Full list of dependencies
> > >
> > >
> > >
> > > 2009/12/6 Rizzen  >   > >>
> > >
> > > Hi
> > >
> > > Where can I find the full list of dependencies required for OSG
> > 2.8 and
> > > list of configuration options for building OSG libraries?
> > >
> > > Rizzen
> > >
> > >
> > > osg itself doesn't have any dependencies, only the plugins do.
> > >
> > > You'll have to run cmake and look through that for specifics, there
> > > are too many plugins for it to be worth making a list and too many
> > > config options as well.
> > >
> > >
> > > --
> > > http://www.ssTk.co.uk
> > >
> > >
> >
> 
> > >
> > > ___
> > > osg-users mailing list
> > > osg-users@lists.openscenegraph.org
> > 
> > >
> >
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> > >
> >
> > ___
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> > osg-users@lists.openscenegraph.org
> > 
> >
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >
> >
> > 
> >
> > ___
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Re: [osg-users] Full list of dependencies

[Rizzen]

osgIntrospection and osgWrappers comes with the OSG core, but are
optional modules. How does one build these optional modules?

I have found the other required 3rd party modules and built them already.

Rizzen

Trajce Nikolov wrote:
> you can get all of them from the svn  look in the archive for the
> details . do a search for 3rdParty 
>
> Nick
>
> http://www.linkedin.com/in/tnikolov
> Sent from Örnek, İstanbul, Turkey
>
> On Sun, Dec 6, 2009 at 7:25 PM, Rizzen  > wrote:
>
> Thanx, though did not help with building the optional modules of OSG
> 2.8. What must be done to get these optional OSG modules built?
>
> Rizzen
>
> Gordon Tomlinson wrote:
> >
> > Here’s the basic dependencies
> >
>  http://www.openscenegraph.org/projects/osg/wiki/Downloads/Dependencies
> >
> >
> >
> > All the rest will be described with the individual plug-ins or
> add-on
> > node  kits
> >
> >
> >
> >
> 
> __
> >
> > /Gordon Tomlinson /
> >
> > /gor...@gordontomlinson.com  >/
> > IM: /gordon3db...@3dscenegraph.com
> 
>  >/
> > /www.vis-sim.com 
>  www.gordontomlinson.com
> 
> > /
> >
> >
> 
> __
> >
> >
> >
> > *From:* osg-users-boun...@lists.openscenegraph.org
> 
> > [mailto:osg-users-boun...@lists.openscenegraph.org
> ] *On Behalf Of
> > *Simon Hammett
> > *Sent:* Sunday, December 06, 2009 10:48 AM
> > *To:* OpenSceneGraph Users
> > *Subject:* Re: [osg-users] Full list of dependencies
> >
> >
> >
> > 2009/12/6 Rizzen    >>
> >
> > Hi
> >
> > Where can I find the full list of dependencies required for OSG
> 2.8 and
> > list of configuration options for building OSG libraries?
> >
> > Rizzen
> >
> >
> > osg itself doesn't have any dependencies, only the plugins do.
> >
> > You'll have to run cmake and look through that for specifics, there
> > are too many plugins for it to be worth making a list and too many
> > config options as well.
> >
> >
> > --
> > http://www.ssTk.co.uk
> >
> >
> 
> >
> > ___
> > osg-users mailing list
> > osg-users@lists.openscenegraph.org
> 
> >
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >
>
> ___
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> osg-users@lists.openscenegraph.org
> 
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
>
> 
>
> ___
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Re: [osg-users] Full list of dependencies

[Trajce Nikolov]

you can get all of them from the svn  look in the archive for the
details . do a search for 3rdParty 

Nick

http://www.linkedin.com/in/tnikolov
Sent from Örnek, İstanbul, Turkey

On Sun, Dec 6, 2009 at 7:25 PM, Rizzen  wrote:

> Thanx, though did not help with building the optional modules of OSG
> 2.8. What must be done to get these optional OSG modules built?
>
> Rizzen
>
> Gordon Tomlinson wrote:
> >
> > Here’s the basic dependencies
> >  http://www.openscenegraph.org/projects/osg/wiki/Downloads/Dependencies
> >
> >
> >
> > All the rest will be described with the individual plug-ins or add-on
> > node  kits
> >
> >
> >
> >
> __
> >
> > /Gordon Tomlinson /
> >
> > /gor...@gordontomlinson.com /
> > IM: /gordon3db...@3dscenegraph.com  >/
> > /www.vis-sim.com  www.gordontomlinson.com
> > /
> >
> >
> __
> >
> >
> >
> > *From:* osg-users-boun...@lists.openscenegraph.org
> > [mailto:osg-users-boun...@lists.openscenegraph.org] *On Behalf Of
> > *Simon Hammett
> > *Sent:* Sunday, December 06, 2009 10:48 AM
> > *To:* OpenSceneGraph Users
> > *Subject:* Re: [osg-users] Full list of dependencies
> >
> >
> >
> > 2009/12/6 Rizzen mailto:riz...@darkstar.co.za>>
> >
> > Hi
> >
> > Where can I find the full list of dependencies required for OSG 2.8 and
> > list of configuration options for building OSG libraries?
> >
> > Rizzen
> >
> >
> > osg itself doesn't have any dependencies, only the plugins do.
> >
> > You'll have to run cmake and look through that for specifics, there
> > are too many plugins for it to be worth making a list and too many
> > config options as well.
> >
> >
> > --
> > http://www.ssTk.co.uk
> >
> > 
> >
> > ___
> > osg-users mailing list
> > osg-users@lists.openscenegraph.org
> >
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >
>
> ___
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>
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[osg-users] HeightField texture coordinates

[Dominic Stalder]

Hi there

is it possible to set the textue coordinates (for repeating a texture) 
of a HeightField node? If yes, how?


Thanks a lot
Dominic
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Re: [osg-users] Full list of dependencies

[Rizzen]

Thanx, though did not help with building the optional modules of OSG
2.8. What must be done to get these optional OSG modules built?

Rizzen

Gordon Tomlinson wrote:
>
> Here’s the basic dependencies
>  http://www.openscenegraph.org/projects/osg/wiki/Downloads/Dependencies 
>
>  
>
> All the rest will be described with the individual plug-ins or add-on
> node  kits
>
>  
>
> __
>
> /Gordon Tomlinson /
>
> /gor...@gordontomlinson.com /
> IM: /gordon3db...@3dscenegraph.com /
> /www.vis-sim.com  www.gordontomlinson.com
> /
>
> __
>
>  
>
> *From:* osg-users-boun...@lists.openscenegraph.org
> [mailto:osg-users-boun...@lists.openscenegraph.org] *On Behalf Of
> *Simon Hammett
> *Sent:* Sunday, December 06, 2009 10:48 AM
> *To:* OpenSceneGraph Users
> *Subject:* Re: [osg-users] Full list of dependencies
>
>  
>
> 2009/12/6 Rizzen mailto:riz...@darkstar.co.za>>
>
> Hi
>
> Where can I find the full list of dependencies required for OSG 2.8 and
> list of configuration options for building OSG libraries?
>
> Rizzen
>
>
> osg itself doesn't have any dependencies, only the plugins do.
>
> You'll have to run cmake and look through that for specifics, there
> are too many plugins for it to be worth making a list and too many
> config options as well.
>
>
> -- 
> http://www.ssTk.co.uk
>
> 
>
> ___
> osg-users mailing list
> osg-users@lists.openscenegraph.org
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>   

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Re: [osg-users] Full list of dependencies

[Gordon Tomlinson]

Here's the basic dependencies
http://www.openscenegraph.org/projects/osg/wiki/Downloads/Dependencies  

 

All the rest will be described with the individual plug-ins or add-on node
kits

 


__

Gordon Tomlinson 

  gor...@gordontomlinson.com
IM:   gordon3db...@3dscenegraph.com
  www.vis-sim.com
 www.gordontomlinson.com 


__

 

From: osg-users-boun...@lists.openscenegraph.org
[mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Simon
Hammett
Sent: Sunday, December 06, 2009 10:48 AM
To: OpenSceneGraph Users
Subject: Re: [osg-users] Full list of dependencies

 

2009/12/6 Rizzen 

Hi

Where can I find the full list of dependencies required for OSG 2.8 and
list of configuration options for building OSG libraries?

Rizzen


osg itself doesn't have any dependencies, only the plugins do.

You'll have to run cmake and look through that for specifics, there
are too many plugins for it to be worth making a list and too many
config options as well.


-- 
http://www.ssTk.co.uk

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Re: [osg-users] [vpb] convertLatLongHeightToXYZ problem with a geocentric coordinate earth

[Lv Qing]

Hi,

Thank you Glenn !


Thank you!

Cheers,
Lv

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Re: [osg-users] Full list of dependencies

[Simon Hammett]

2009/12/6 Rizzen 

> Hi
>
> Where can I find the full list of dependencies required for OSG 2.8 and
> list of configuration options for building OSG libraries?
>
> Rizzen


osg itself doesn't have any dependencies, only the plugins do.

You'll have to run cmake and look through that for specifics, there
are too many plugins for it to be worth making a list and too many
config options as well.

-- 
http://www.ssTk.co.uk
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Re: [osg-users] [vpb] convertLatLongHeightToXYZ problem with a geocentric coordinate earth

[Glenn Waldron]

On Sun, Dec 6, 2009 at 7:53 AM, Lv Qing  wrote:

>
> Glenn Waldron wrote:
> > Lv,
> >
> > convertLatLongHeightToXYZ gives you a point on the surface of the
> ellipsoid, but the actual polygons in the terrain model are just a
> tessellated approximation of that ellipsoid. So if you want the point on the
> triangulated surface, you have to convert to XYZ and then "clamp" down to
> the surface (using the local up-vector at that point).
> >
> > Glenn Waldron : Pelican Mapping : http://pelicanmapping.com (
> http://pelicanmapping.com) : +1.703.652.4791
> >
> >
> > On Sat, Dec 5, 2009 at 10:19 AM, Lv Qing < ()> wrote:
> >
> > >  Hi,
> > >
> > > I have build a geocentric coordinate earth model using VPB and want to
> put a simple model on the suface of the earth.
> > >
> > > I use the convertLatLongHeightToXYZ function to convert the
> BLH(Lat,Long,Height) of the simple model to XYZ of the
> > > geocentric coordinate system.The result of X and Y seems OK,but the Z
> coordinate  is always a bit higher above the earth suface(about 5000 m).
> > >
> > >
> > >
> > > Code:
> > >
> > > // load the earth model
> > > osg::CoordinateSystemNode* csn = new osg::CoordinateSystemNode;
> > > csn->setEllipsoidModel(new osg::EllipsoidModel());
> > > osg::Node* TerrainNode= osgDB::readNodeFile("earth.osga");
> > > csn->addChild(TerrainNode);
> > >
> > > //convert the BLH(50,130,0) to XYZ,I set height 0.
> > > osg::Vec3d m_surface;
> > >
> csn->getEllipsoidModel()->convertLatLongHeightToXYZ(osg:egreesToRadians(50.0f),osg:egreesToRadians(130.0f),0.0f,double(m_surface.x()),double(m_surface.y()),double(m_surface.z()));
> > >
> > > //draw a simple yellow line from center of the earth (osg::Vec3(0,0,0))
> to the surface (osg::Vec3d m_surface);
> > >
> > > osg::Geode *geode_line = new osg::Geode;
> > > osg::Geometry *geom = new osg::Geometry();
> > > geode_line->addDrawable(geom);
> > > csn->addChild(geode_line);
> > > osg::Vec3Array *v = new osg::Vec3Array();
> > > v->push_back(osg::Vec3(0,0,0));
> > > v->push_back(m_center);
> > > geom->setVertexArray(v);
> > > osg::Vec4Array *vc = new osg::Vec4Array();
> > > vc->push_back(osg::Vec4(1.0f,0.5f,0.0f,1.0f));
> > > geom->setColorArray(vc);
> > > geom->setColorBinding(osg::Geometry::BIND_PER_PRIMITIVE);
> > > geom->addPrimitiveSet(new osg:rawArrays(osg:rimitiveSet:INES,0,2));
> > >
> > >
> > >
> > >
> > >
> > > As the result ,the end of the yellow line is obviously higher than the
> surface.Please tell me where I am wrong,THX!
> > > Thank you!
> > >
> > > Cheers,
> > > Lv
> > >
> > > --
> > > Read this topic online here:
> > > http://forum.openscenegraph.org/viewtopic.php?p=20950#20950 (
> http://forum.openscenegraph.org/viewtopic.php?p=20950#20950)
> > >
> > >
> > >
> > >
> > > Attachments:
> > > http://forum.openscenegraph.org//files/getattachment1_418.jpg (
> http://forum.openscenegraph.org//files/getattachment1_418.jpg)
> > >
> > >
> > > ___
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> > >  ()
> > >
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org(
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org)
> > >
> >
> >
> >  --
> > Post generated by Mail2Forum
>
>
>
> Thank you !How can I  use  the local up-vector at that point?
>
>
> Is that?
>
>
> Code:
>
> osg::Vec3d m_center;
>
>
> csn->getEllipsoidModel()->convertLatLongHeightToXYZ(osg::inDegrees(40.0f),osg::inDegrees(120.0f),0.0f,double(m_center.x()),double(m_center.y()),double(m_center.z()));
>
> osg::Vec3d center;
>
>
> center.set(csn->getEllipsoidModel()->computeLocalUpVector(m_center.x(),m_center.y(),m_center.z()));
>

1) Get the XYZ using convertLatLongHeightToXYZ (lat/long must be in
radians).

2) Get the local normalized UP vector at that point, as in your code above.
(you need revision 10536 or newer for this method to work correctly -- if
you are using an older version, just copy the newer code and do it
manually).

3) Start at your XYZ, and extend along the up vector in each direction to
create a line segment long enough to intersect the terrain.

4) Use the osgUtil::LineSegmentIntersector to find the intersection point.

Keep in mind that the intersection point will be different for each LOD in
your VPB terrain ... but that's another topic.


Glenn Waldron : Pelican Mapping : http://pelicanmapping.com :
+1.703.652.4791
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[osg-users] Full list of dependencies

[Rizzen]

Hi

Where can I find the full list of dependencies required for OSG 2.8 and
list of configuration options for building OSG libraries?

Rizzen
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Re: [osg-users] [vpb] convertLatLongHeightToXYZ problem with a geocentric coordinate earth

[Lv Qing]

Glenn Waldron wrote:
> Lv,
> 
> convertLatLongHeightToXYZ gives you a point on the surface of the ellipsoid, 
> but the actual polygons in the terrain model are just a tessellated 
> approximation of that ellipsoid. So if you want the point on the triangulated 
> surface, you have to convert to XYZ and then "clamp" down to the surface 
> (using the local up-vector at that point). 
> 
> Glenn Waldron : Pelican Mapping : http://pelicanmapping.com 
> (http://pelicanmapping.com) : +1.703.652.4791
> 
> 
> On Sat, Dec 5, 2009 at 10:19 AM, Lv Qing < ()> wrote:
> 
> >  Hi,
> > 
> > I have build a geocentric coordinate earth model using VPB and want to put 
> > a simple model on the suface of the earth.
> > 
> > I use the convertLatLongHeightToXYZ function to convert the 
> > BLH(Lat,Long,Height) of the simple model to XYZ of the
> > geocentric coordinate system.The result of X and Y seems OK,but the Z 
> > coordinate  is always a bit higher above the earth suface(about 5000 m).
> > 
> > 
> > 
> > Code:
> > 
> > // load the earth model
> > osg::CoordinateSystemNode* csn = new osg::CoordinateSystemNode;
> > csn->setEllipsoidModel(new osg::EllipsoidModel());
> > osg::Node* TerrainNode= osgDB::readNodeFile("earth.osga");
> > csn->addChild(TerrainNode);
> > 
> > //convert the BLH(50,130,0) to XYZ,I set height 0.
> > osg::Vec3d m_surface;
> > csn->getEllipsoidModel()->convertLatLongHeightToXYZ(osg:egreesToRadians(50.0f),osg:egreesToRadians(130.0f),0.0f,double(m_surface.x()),double(m_surface.y()),double(m_surface.z()));
> > 
> > //draw a simple yellow line from center of the earth (osg::Vec3(0,0,0)) to 
> > the surface (osg::Vec3d m_surface);
> > 
> > osg::Geode *geode_line = new osg::Geode;
> > osg::Geometry *geom = new osg::Geometry();
> > geode_line->addDrawable(geom);
> > csn->addChild(geode_line);
> > osg::Vec3Array *v = new osg::Vec3Array();
> > v->push_back(osg::Vec3(0,0,0));
> > v->push_back(m_center);
> > geom->setVertexArray(v);
> > osg::Vec4Array *vc = new osg::Vec4Array();
> > vc->push_back(osg::Vec4(1.0f,0.5f,0.0f,1.0f));
> > geom->setColorArray(vc);
> > geom->setColorBinding(osg::Geometry::BIND_PER_PRIMITIVE);
> > geom->addPrimitiveSet(new osg:rawArrays(osg:rimitiveSet:INES,0,2));
> > 
> > 
> > 
> > 
> > 
> > As the result ,the end of the yellow line is obviously higher than the 
> > surface.Please tell me where I am wrong,THX!
> > Thank you!
> > 
> > Cheers,
> > Lv
> > 
> > --
> > Read this topic online here:
> > http://forum.openscenegraph.org/viewtopic.php?p=20950#20950 
> > (http://forum.openscenegraph.org/viewtopic.php?p=20950#20950)
> > 
> > 
> > 
> > 
> > Attachments:
> > http://forum.openscenegraph.org//files/getattachment1_418.jpg 
> > (http://forum.openscenegraph.org//files/getattachment1_418.jpg)
> > 
> > 
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> > 
> 
> 
>  --
> Post generated by Mail2Forum



Thank you !How can I  use  the local up-vector at that point?


Is that?


Code:

osg::Vec3d m_center;

csn->getEllipsoidModel()->convertLatLongHeightToXYZ(osg::inDegrees(40.0f),osg::inDegrees(120.0f),0.0f,double(m_center.x()),double(m_center.y()),double(m_center.z()));

osg::Vec3d center;

center.set(csn->getEllipsoidModel()->computeLocalUpVector(m_center.x(),m_center.y(),m_center.z()));




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Re: [osg-users] Please test svn/trunk in prep for 2.9.6 dev release

[Trajce Nikolov]

yes, destruction. it is my own example but will try to reproduce the problem
with the examples and send the code

Nick

http://www.linkedin.com/in/tnikolov


On Sun, Dec 6, 2009 at 11:56 AM, Robert Osfield wrote:

> Hi Nick,
>
> On Sat, Dec 5, 2009 at 1:36 PM, Trajce Nikolov 
> wrote:
> > I am getting crash in
> > void Group::releaseGLObjects(osg::State* state) const
> > after releasing the osgViewer::VIewer
>
> What do you mean by "releasing" the osgViewer::Viewer?  Destruction?
> Could you be specific enough that others could have a bash at
> reproducing the problem.  For instance is it you own app, standard OSG
> example?
>
> Thanks,
> Robert.
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Re: [osg-users] Looking for recommendation for (Paged)LODs and terrain visualization

[Hartwig Wiesmann]

Hi Glenn,

yes, that's what I planned to do. I am just evaluating osgEarth.

Thank you!

Cheers,
Hartwig

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Re: [osg-users] Please test svn/trunk in prep for 2.9.6 dev release

[Robert Osfield]

Hi Nick,

On Sat, Dec 5, 2009 at 1:36 PM, Trajce Nikolov  wrote:
> I am getting crash in
> void Group::releaseGLObjects(osg::State* state) const
> after releasing the osgViewer::VIewer

What do you mean by "releasing" the osgViewer::Viewer?  Destruction?
Could you be specific enough that others could have a bash at
reproducing the problem.  For instance is it you own app, standard OSG
example?

Thanks,
Robert.
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