Hi Ronald,
osgsimplepager is one example of DatabasePager's use; there you can see
all the calls needed for setting up the DatabasePager, but they are
only needed if you do not use osgProducer::Viewer. If you use the
Viewer, it sets up the DatabasePager itself, so you just need to
follow Robert's advice.
Once you have your paged database and you have the DatabasePager
managing its loading (previous paragraph), I think there is no need to
receive any results from the DatabasePager.
Sinisa
----- Original Message -----
From: "ronaldss" <[EMAIL PROTECTED]>
To: "osg-users" <[email protected]>
Sent: Thursday, September 14, 2006 6:58 PM
Subject: Re: [osg-users] How to walk in the scene graph?
Hi Robert,
I use DatabasePager to receive the results from the research of my
spacial data base?
Exists some example of use of the DatabasePager?
Thanks,
Ronald S.Serrao,
Brasil.
Hi Ronald,
For this type of big database paging may well be the solution, the OSG
has
built in support for paging so all you'll need to do is build the
paged
database and then load the topmost tile and the then the DatabasePager
will
do all the updating of the scene for the current view position.
Robert.
On 9/14/06, ronaldss <[EMAIL PROTECTED]> wrote:
>
> Hi all,
>
> I am constructing an urban model to visualize a quarter entire, am
> using
> data base spatial to get the information of the streets, squares...
> and each
> entity has an object 3D for its representation. As the object number
> is
> great, I only load in my graph of scene those objects that are near
> of the
> camera. I used the osgimpostor example to make my manipulator of the
> camera,
> and each movement of the camera I consult in the data base the
> objects that
> are near of this position and the loaded.
>
> Here my problem appears, to each change in the position of the
> camera I
> all erase the content of mine of the scene graph and later I place
> all again
> the objects, and believe that is this the reason of mine framerate
> to fall
> very.
>
> I would like to know as I make to cross the scene graph to verify
> which
> nodes must be removed and which must be inserted, not to be
> necessary to
> remove all and again place them to each movement of the camera.
>
> Thanks,
>
> Ronald S.Serrao,
> Brasil.
>
>
> _______________________________________________
> osg-users mailing list
> [email protected]
> http://openscenegraph.net/mailman/listinfo/osg-users
> http://www.openscenegraph.org/
>
_______________________________________________
osg-users mailing list
[email protected]
http://openscenegraph.net/mailman/listinfo/osg-users
http://www.openscenegraph.org/
_______________________________________________
osg-users mailing list
[email protected]
http://openscenegraph.net/mailman/listinfo/osg-users
http://www.openscenegraph.org/
