Hi Torben, It's good to see I'm not the only one trying to do this stuff. Yes, coming up with a toolchain document that tells people specifically how to string together a lot of different tools would be good.
I was just playing with osgEarth yesterday, and damn! that's neat. I haven't had as much luck getting VirtualPlanetBuilder to understand my geotiffs. But if osgEarth can understand them, then it's probably a solvable problem with how data is getting sent to gdal or something like that. Anyway, I keep coming back to that same problem: I need to be able to manually edit anything with a modeling problem since my employers make random requests all the time. Your flattening of the database in configurable areas sounds similar. So, to answer your question, I'd like to be able to modify databases offline. Being able to do fancy stuff like stitching in roads and prebuilt models of cities and stuff would be very cool. Both VPB and osgEarth seem to default to building scenegraphs with PagedLOD nodes, which I don't think will work for me. One option I thought of is to use VPB to create a big database in a single file with traditional LOD nodes, then use a separate program to convert it all to individual .flt tiles and a Metaflight file or something similar. I'll have to do more thinking about this option. Anyone know of any alternatives to Metaflight that can describe tiled databases but still let you store and edit tiles individually? I just want to consider all the options. -- Terry Welsh / mogumbo 'at' gmail.com www.reallyslick.com / www.mogumbo.com > > Message: 14 > Date: Tue, 30 Mar 2010 10:33:34 +0000 > From: "Torben Dannhauer" <[email protected]> > To: [email protected] > Subject: Re: [osg-users] looking for a terrain database building > toolchain > Message-ID: <[email protected]> > Content-Type: text/plain; charset=UTF-8 > > Hi Terry, > > I have quite the same goal to reach, so I would happy to cooperate and create > a usefull toolchain. > > At the moment I use VPB to generate the database. > I'have tried osgEarth but the VPB Plugin over there doesn't work very well, > it loades all tiles at highest LOD and my FPS falls down to less than 5 fps. > So osgEarth is not an option. > > At the beginning, I had a lot of problems to compile my datase ( ~800GB raw > data. > with 64 Bit and the newest VPB it now works quite stable, resuming works and > it is possible. With compressing all geotiffs with LZW the build time is > reduzed dramatically from several weeks to days ( 16 Cores, 12 gig ram, > several HDDs for source data) > About this task, I have written a detailed documentation which I plan to > publish on VPB wiki. > > The following tasks are not solved but are only my current todo list: > > adding forest to database based on openstreetmap shapes. Use of LOD to > blend forest on configurable distance in and out > > flattening/pulling ground to specifig height of the geocentric > database in configurable areas to provide complete flat areas (or other > height feature) for flat airports or other submodels. > > adding streets and other feature of OpenStreetMap and other sources > > > > Would you like to modify database offline or online during runtime via > pseudoloader? > > Both approaches are quite interesting I think. > > I would be happy if we could create a Toolchain and write a detailed > documentation (I'd like to do this, because I struggled myself often at the > beginning due to lack of documentation) > > Cheers, > Torben[/list] > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=26264#26264 > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
