2008/9/10, Brian R Hill <[EMAIL PROTECTED]>: > > Nicholas, > > If the openflight files are already subdivided into a grid of tiles > referenced into a single master file, then there's some code I posted to > the list a couple months ago that will convert them to use pagelods and > also convert them to .ive format for faster loading. > > Search the archives and you should see how to do it.
Brian, Thanks a lot! I'm gonna take a look at this! Nicolas Brian > > [EMAIL PROTECTED] wrote: ----- > > To: "OpenSceneGraph Users" <osg-users@lists.openscenegraph.org> > From: Coco <[EMAIL PROTECTED]> > Sent by: [EMAIL PROTECTED] > Date: 09/10/2008 05:55AM > Subject: Re: [osg-users] osgTerrain::TerrainTile question > > 2008/9/10, Robert Osfield < > [EMAIL PROTECTED] > >: > > Hi Nicolas, > > I think you have got the wrong end of the stick. I was suggesting > TerraPage as an illustration of how cultural data (3d models) can be > > stored in with the tiles on disk. In vis-sim industry TerraPage is > well known so I used it as as a case in point to save typing lots... > > FYI, The OSG's TerraPage plugin uses the PagedLOD and the > DatabasePager under the hood to provide it's paging functionality. > > In your case the problem is about creating databases not actually > rendering them - as the OSG will do all the paging, and threading for > you thanks the DatabasePager and other related classes. The > DatabasePage doesn't help you create databases, it's tools like > > VirtualPlanetBuilder that do this, but... right now VPB doesn't > support insertion of cultural data into the tiles, so you'll need post > process the database to insert this data. > > Robert. > > > > > > I think there is a missunderstanding. My problem is to load a big > database, not to create it. > > I already have my database, fragmented in FLT files like I said. So I was > suggesting to use DatabasePager to load flt nodes when I need it to. In > this case I think I don't have to process any data... > > I hope I haven't got the wrong end of the stick (again!). > > > > Nicolas > > > > > On Wed, Sep 10, 2008 at 9:49 AM, Coco < > [EMAIL PROTECTED] > > wrote: > > > Thank you very much for your ideas! > > > > I found out the osgDB::DatabasePager class by reading old posts and it > looks > > to fit my problem very well. > > By using TerraPage I will have to pre-process my databases, whereas with > the > > > database pager I don't need to. > > > > virtual void requestNodeFile (const std::string &fileName, osg::Group > > *group, float priority, const osg::FrameStamp *framestamp) > > Theoretically, I just have to use this function before the camera is > close > > > enough to see next area(s). > > > > Regards, > > > > Nicolas Duval > > > > 2008/9/10, Robert Osfield < > [EMAIL PROTECTED] > >: > >> > > >> Hi Nicolas, > >> > >> osgTerrain::TerrainTile was named osgTerrain::Terrain in 2.2. > >> osgTerrain since 2.2 was evolved to be more rounded and functional, > >> the naming was changed to better fit what goes on in big paged > > >> database, when the Terrain is composed of a hierarchy of TerrainTile. > >> There is now a new class class osgTerrain::Terrain which represent the > >> high level representation of the terrain. > >> > > >> In your case loading 3D models with terrain is something that we be > >> best done be pre-processing your data so that the 3D models are > >> inserted into a paged database. If you are familiar with TerraPage > > >> then this ideal should be familiar to you. > >> > >> Robert. > >> > >> On Tue, Sep 9, 2008 at 9:30 PM, Coco < > [EMAIL PROTECTED] > > wrote: > > >> > Hi, > >> > > >> > I'm presently working on a car simulator using OSG 2.2 for the visual. > >> > My problem is that I would like to load big areas (such as entire > cities > >> > or > > >> > more) which are fragmented in several Open Flight files without > loading > >> > all > >> > those files. > >> > I looked at the OSG documentation and found out the > >> > osgTerrain::TerrainTile > > >> > class (which doesn't exist on 2.2 OSG version). > >> > By using OSG 2.6, would I be able to load (with the TerrainTile class) > >> > only > >> > tiles (associated to a FLT file) that I need to see (which means > > >> > according > >> > to the location of the camera)? > >> > Or do I need to implement this system by myself to avoid loading all > >> > files > >> > at the same time? > >> > > > >> > I hope this post is clear enough and wait for answers. > >> > > >> > Kind regards, > >> > > >> > Nicolas Duval > >> > _______________________________________________ > > >> > osg-users mailing list > >> > > osg-users@lists.openscenegraph.org > > >> > > >> > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > >> > > >> > > >> _______________________________________________ > >> osg-users mailing list > >> > osg-users@lists.openscenegraph.org > > > >> > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > > > _______________________________________________ > > > osg-users mailing list > > > osg-users@lists.openscenegraph.org > > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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