Hi Eric, osgEarth can do everything you've mentioned you need to do. You can add/remove layers at runtime, cut holes in the terrain using the masking feature and run at 60 fps. When you say that performance was bad until you've filled the cache in osgEarth, you're making a good point. Everything that VPB does in it's preprocessing step osgEarth is doing at runtime and caching as it goes along. So a fully cached osgEarth is very similar to a VPB built database.
That being said, you'll get MUCH better performance (in both osgEarth at runtime and VPB at build time) if you take some relatively simple steps to make sure you're GIS is optimized, see http://osgearth.org/wiki/DataPreparation Basically you need to take the time to reproject your data up front and ensure that it's in a fast format that can support fast tiled reads (like a tiled geotiff with overviews or an ECW or JPEG2000). I'm looking at a 1.2 GB ECW file in osgEarth right now with no cache at all and it's crazy fast. Thanks, Jason On Thu, Mar 15, 2012 at 12:01 PM, Eric Zaremba <osgfo...@tevs.eu> wrote: > Hi, > > At the question > > Aurelien wrote: > > 3. Is there any "invalid elevation value" management to "cut holes" in > source elevation data and then build a database with holes inside ? (not > simple shape holes as square) > > > You say > > Chris Hanson wrote: > > I don't remember how VPB handles this anymore. I know I've done it > though. > > > The need of drill hole in my terrains is the thing which prevent me to use > osgEarth or VPB until now. If you can remember how to do it, it will be a > great improvement in my projects. > > Thank you! > > Cheers, > Eric > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=46309#46309 > > > > > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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