So you haven't tried the PagedLOD? The code below will load your model in a
background thread. If you place the object 0 to 500 meters from the
eyepoint it will start paging in. Between 500 and 10000 it should show the
text of the model instead. Beyond 10000 it is culled out. I believe at all
times you should have mouse control. You may also just try dynamically
changing the 'pagedLod->setFileName(1, subFileName);' call to just be the
current node you are interested in seeing. The previous one should
automatically get removed? (unsure though)
float minRange=0;
float maxRange=500;
float textRange=10000;
//Create paged LOD
osg::PagedLOD* pagedLod = new osg::PagedLOD;
//Set the fileName.
pagedLod->setFileName(0, "");
pagedLod->setRangeMode(osg::LOD::DISTANCE_FROM_EYE_POINT);
pagedLod->setRange(0, maxRange, textRange);
//Create text for representing low level detail
osg::Geode* geode = new osg::Geode;
osgText::Text* text = new osgText::Text;
text->setFont("fonts/times.ttf");
text->setCharacterSize(20);
//Set position of text to center of node.
text->setPosition(node->getBound().center());
text->setAxisAlignment(osgText::Text::SCREEN);
//Set text to subFilename
text->setText(subFileName);
//Add text to drawable
geode->addDrawable(text);
//Add drawable to paged lod
pagedLod->addChild(geode);
//Set LOD's page range
pagedLod->setRange( 1, minRange, maxRange );
//Set LOD's center to center of loaded model.
pagedLod->setCenter( node->getBound().center() );
pagedLod->setFileName(1, subFileName);
pagedLod->setCullingActive(true);
pagedLod->setRadius( maxRange );
Zach
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Whitfield, John
M. (SED/TMI)
Sent: Friday, December 08, 2006 10:43
To: osg users
Subject: RE: [osg-users] Timing
I just want to pass the nodes into a group, display the group, then manually
remove the nodes. I am already doing this with just a group, but this makes
it where the user does not have control to move around the scene until after
everything has finished drawing, and I need the user to be able to move
around the scene as it is drawing.
-John
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Zach Deedler
Sent: Friday, December 08, 2006 9:35 AM
To: 'osg users'
Subject: RE: [osg-users] Timing
John,
Need info
OS:
size of paged data:
Are you triggering the paging, or is it done by distance to camera?
Zach
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Whitfield, John
M. (SED/TMI)
Sent: Friday, December 08, 2006 10:22
To: osg users
Subject: RE: [osg-users] Timing
Is anyone know of any source code that is a good example of how to phase new
nodes in and out of pagedLOD, because it is not working the way I assumed it
would?
Thanks,
-John
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Robert Osfield
Sent: Friday, November 17, 2006 2:55 PM
To: osg users
Subject: Re: [osg-users] Timing
Hi John,
PagedLOD allows you to load objects in the background and incrementally
merge them.
Robert.
On 11/17/06, Whitfield, John M. (SED/TMI)
<[EMAIL PROTECTED]> wrote:
> I am attempting to run openscenegraph within a qt window. Although all
> of camera controls are not implemented to the level I would like,
> there is a timing control issue I also need to work on. I start the
> program, then use the mouse to get the part of the scene I am
> interested. Once I start reading in the file and adding all of these
> nodes to the scene I loose control of my ability to move the camera
> until everything is loaded. I would like to be able to move as the
nodes are being created.
> Does anybody know how to solve this problem?
>
> Thanks,
> -John
> _______________________________________________
> osg-users mailing list
> [email protected]
> http://openscenegraph.net/mailman/listinfo/osg-users
> http://www.openscenegraph.org/
>
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http://www.openscenegraph.org/
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