robertosfield wrote: > Hi David, > > I can't recall all the options off the top of my head so with the help > of osgdem --help and grep I get: > > $ osgdem --help | grep LOD > --LOD Create a LOD'd database. > --PagedLOD Create a PagedLOD'd database. > --subtile <LOD> <X> <Y> > -l <numOfLevels> Specify the number of PagedLOD levels to generate. > > So the last one is the one you want, so just add a -l 5 or something > similar to your osgdem or vpbmaster command line. > > Robert. > > > > On 5 September 2012 23:44, David Glenn <> wrote: > > > Greetings All! > > > > I'm just getting the time to do some real study on VPB and I had some > > questions about LOD and controlling it! > > > > First of all, I'm going to reverence a tool that I know “Terra Vista” for > > an example. If you don't know about this tool, I understand and try to > > explain in more detail. > > > > One of the tricks you can do in Terra Vista is that you can limit the > > amount of LOD's you can use in a given area over others. This allows you to > > build terrain that has higher level of detail in some areas (where it > > matters ) and allows other areas to max out at a lower level of detail. > > This in the end would make the terrain take up less space than of all of > > the terrain was at a high level of detail. > > > > I managed to get a group of satellite data at 1 meter resolution and it > > works fine, but it's taking up over 50 gigs of Hard disk space. I like to > > cut it back a bit so I can at lease maybe get it on a double layer DVD, if > > not , a blue ray disk. I figure that if I can cut back on the resolution > > in areas that I don’t need to be at 1 meter resolution, I can cut the size > > in whole of the terrain to something more manageable. > > > > Dglenn > > > > ------------------------ > > David Glenn > > --------------- > > D Glenn 3D Computer Graphics & Media Systems. > > www.dglenn.com > > > > ------------------ > > Read this topic online here: > > http://forum.openscenegraph.org/viewtopic.php?p=49791#49791 > > > > > > > > > > > > _______________________________________________ > > osg-users mailing list > > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > _______________________________________________ > osg-users mailing list > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > ------------------ > Post generated by Mail2Forum
Well, I have made some headway on Paged LOD's and made some terrains files, but I also found something interesting and I was wondering is someone can explain this to me! When I make a terrain with -l set to 20, I get a bunch of files titled with the name, level of detail number, the X location in the grid and a Y location on the grid fallowed with "_subtile"! I figured that I would find at least 19 sets of files listed from L0 up to L19 or L20 but what I get is 12 sets listed from L0 to L11. Can anyone explain this to me? I'm in the middle of writing a paper on this and after reviewing code and files, I thought I knew what was going on, but now I'm confused!! :? ------------------------ David Glenn --------------- D Glenn 3D Computer Graphics & Media Systems. www.dglenn.com ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50901#50901 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
