Hi David, If osgdem get to the level where the texture resolution is the highest it stops, even if it's before the max number of levels you specified. So L11 might be the last level with the highest resolution texture for your database.
-- Christophe 2012/10/30 David Glenn <da...@dglenn.com> > > 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 > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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